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Windows forms - The name "dataGridView2" doesn't exist in this context

The problem is "The name "dataGridView2" doesn't exist in this context.". It only appears at the final parts of the code. Placing the object creation outside of public void menuItem1_Click fixes the problem, but then it only creates one object, I need it to create an object every time a button is pressed.
Here is the code from Form1:
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
namespace Kalkulator_Matrica
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
int brojMatrice = 1;
public int dataGridCreator = 0;
public void menuItem1_Click(object sender, EventArgs e)
{
// opens form2 with new matrix
Form2 novaMatrica = new Form2();
using (var form = new Form2())
{
var result = form.ShowDialog();
if (result == DialogResult.OK)
{
int column = form.ReturnValue1;
int row = form.ReturnValue2;
//Create tab
TabPage tpage = new TabPage("Matrica " + brojMatrice);
tabControl1.TabPages.Add(tpage);
//Create data grid
DataGridView dataGridView2 = new DataGridView();
dataGridView2.ClientSize = new Size(553, 350);
dataGridView2.AllowUserToAddRows = false;
dataGridView2.AllowUserToResizeColumns = false;
dataGridView2.AllowUserToResizeRows = false;
dataGridView2.ColumnHeadersVisible = false;
dataGridView2.RowHeadersVisible = false;
dataGridView2.ColumnCount = column;
dataGridView2.RowCount = row;
this.AutoSize = true;
tpage.Controls.Add(dataGridView2); //Add grid to tab
//Create matrix name label
Label imeMatrice = new Label();
imeMatrice.Location = new Point(620, 10);
imeMatrice.Size = new Size(100, 20);
imeMatrice.Font = new Font("Microsoft Sans Serif", 15);
imeMatrice.Text = "Matrica " + brojMatrice;
tpage.Controls.Add(imeMatrice);
//Create matrix data label
Label dataMatrice = new Label();
dataMatrice.Location = new Point(637, 35);
dataMatrice.Size = new Size(100, 20);
dataMatrice.Font = new Font("Microsoft Sans Serif", 15);
dataMatrice.Text = dataGridView2.RowCount + " x " + dataGridView2.ColumnCount;
tpage.Controls.Add(dataMatrice);
//Povecamo counter za imena matrica
brojMatrice += 1;
//Create button ADD ROW
Button addRow = new Button();
addRow.Location = new Point(557, 70);
addRow.Size = new Size(107, 40);
addRow.Text = "Dodaj redak";
addRow.Click += new EventHandler(addRowClick);
tpage.Controls.Add(addRow);
//Create button REMOVE ROW
Button removeRow = new Button();
removeRow.Location = new Point(663, 70);
removeRow.Size = new Size(107, 40);
removeRow.Text = "Izbrisi redak";
removeRow.Click += new EventHandler(removeRowClick);
tpage.Controls.Add(removeRow);
//Create button ADD COLUMN
Button addColumn = new Button();
addColumn.Location = new Point(557, 110);
addColumn.Size = new Size(107, 40);
addColumn.Text = "Dodaj stupac";
addColumn.Click += new EventHandler(addColumnClick);
tpage.Controls.Add(addColumn);
//Create button REMOVE COLUMN
Button removeColumn = new Button();
removeColumn.Location = new Point(663, 110);
removeColumn.Size = new Size(107, 40);
removeColumn.Text = "Izbrisi stupac";
removeColumn.Click += new EventHandler(removeColumnClick);
tpage.Controls.Add(removeColumn);
//Sets widght of all columns
for (int i = 0; i < column; i = i + 1)
{
dataGridView2.Columns[i].Width = 25;
}
dataGridCreator = dataGridCreator + 1;
}
}
}
private void addRowClick(object sender, EventArgs e)
{
dataGridView2.RowCount = dataGridView2.RowCount + 1;
}
private void removeRowClick(object sender, EventArgs e)
{
if (dataGridView2.RowCount > 1) {
dataGridView2.RowCount = dataGridView2.RowCount - 1;
}
}
private void addColumnClick(object sender, EventArgs e)
{
dataGridView2.ColumnCount = dataGridView2.ColumnCount + 1;
for (int i = 0; i < dataGridView2.ColumnCount; i = i + 1)
{
dataGridView2.Columns[i].Width = 25;
}
}
private void removeColumnClick(object sender, EventArgs e)
{
if (dataGridView2.ColumnCount > 1)
{
dataGridView2.ColumnCount = dataGridView2.ColumnCount - 1;
}
}
private void Form1_Load(object sender, EventArgs e)
{
}
}
}

Use like below, it will create new object every time but name of the variable will be same through out the code and it accessible in the context as well.
int brojMatrice = 1;
public int dataGridCreator = 0;
DataGridView dataGridView2;
public void menuItem1_Click(object sender, EventArgs e)
{
//Create data grid
dataGridView2 = new DataGridView();
}

How to use properties of text boxes outside of the current context in visual studio [duplicate]

I have created WinForm App in which user can set how many textboxes he want (Range 1-99)
I am using this code to create Textboxes during runtime
for (int i = 0; i < Calculation.Num; i++)
{
TextBox txtRun = new TextBox();
txtRun.Name = "txtBox" + i;
txtRun.Location = new System.Drawing.Point(35, 50 + (20 * i) * 2);
txtRun.Size = new System.Drawing.Size(75, 25);
this.Controls.Add(txtRun);
}
Suppose user create 2 textboxes and then enter data in each textbox and click calculate button
Now i want to get the textboxes data and divide it by 100
See The Picture I want txtbox1 and txtbox2 data
EDIT 3:
This is the Whole Code
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
namespace GPA_Calculatior__New_
{
public partial class Form1 : Form
{
int j = 0;
public Form1()
{
InitializeComponent();
}
private void Form1_Load(object sender, EventArgs e)
{
//Label + Marks Obtained Textbox
for (int i = 0; i < Calculation.Num; i++)
{
Label lblCount = new Label();
lblCount.Name = "lblCount" + i;
lblCount.Location = new System.Drawing.Point(5, 55 + (20 * i) * 2);
lblCount.Size = new System.Drawing.Size(20, 30);
lblCount.Text = (i + 1).ToString();
this.Controls.Add(lblCount);
TextBox txtRun = new TextBox();
txtRun.Name = "txtBox" + i;
txtRun.Location = new System.Drawing.Point(35, 50 + (20 * i) * 2);
txtRun.Size = new System.Drawing.Size(75, 25);
this.Controls.Add(txtRun);
}
//Creating Textbox which is for total marks
for (j = 0; j < Calculation.Num; j++)
{
TextBox txtRun = new TextBox();
txtRun.Name = "TotaltxtBox" + j;
txtRun.Location = new System.Drawing.Point(160, 50 + (20 * j) * 2);
txtRun.Size = new System.Drawing.Size(50, 25);
txtRun.Text = "100";
txtRun.Enabled = false;
this.Controls.Add(txtRun);
}
// Creating 2 Buttons (Calculate and Back)
for (int k = 0; k < 2; k++)
{
Button Btn = new Button();
Btn.Name = "btn" + k;
Btn.Location = new System.Drawing.Point(20 + (k *110), 60 + (20 * j) * 2);
Btn.Size = new System.Drawing.Size(90, 30);
if (k == 0)
Btn.Text = "Back";
else
Btn.Text = "Calculate";
Btn.Click += button_Click;
this.Controls.Add(Btn);
}
//Just for Giving free space in last
Label lbl = new Label();
lbl.Name = "lbl" + j;
lbl.Location = new System.Drawing.Point(30, 90 + (20 * j) * 2);
lbl.Size = new System.Drawing.Size(90, 30);
lbl.Text = "";
this.Controls.Add(lbl);
//**********************************************
}
//Caculate and back button function
private void button_Click(object sender, EventArgs e)
{
Button btn = sender as Button;
if (btn.Name.Equals("btn1"))
{
for (int i = 0; i < Calculation.Num; i++)
{
}
}
else
{
GPA_Calculator mainForm = new GPA_Calculator();
mainForm.Show();
this.Hide();
}
}
private void checkBox1_CheckedChanged(object sender, EventArgs e)
{
for (j = 0; j < 10; j++)
{
}
}
private void Form1_FormClosed(object sender, FormClosedEventArgs e)
{
Application.Exit();
}
}
}

var sum = this.Controls.OfType<TextBox>()
.Where(t => char.IsDigit(t.Name.Reverse().Take(1).FirstOrDefault())
&& t.Enabled)
.Select(t =>
{
double i;
if (!double.TryParse(t.Text, out i)) { return 0d; }
return i / 100d;
})
.Sum();

This may work, I built a separate class to store the control and its value, then you can work out the values independently from the rest of the form. You need to trigger the calculations though:
private List<InfoTextBox> activeTextBoxes = new List<InfoTextBox>();
public Form1()
{
for (int i = 0; i < Calculation.Num; i++)
{
TextBox txtRun = new TextBox();
txtRun.Name = "txtBox" + i;
txtRun.Location = new System.Drawing.Point(35, 50 + (20 * i) * 2);
txtRun.Size = new System.Drawing.Size(75, 25);
this.Controls.Add(txtRun);
InfoTextBox iBox = new InfoTextBox();
iBox.textbox = txtRun;
activeTextBoxes.Add(iBox);
}
}
public class InfoTextBox
{
private double _textboxValue;
public TextBox textbox { get; set; }
public double TextBoxValue { get { return _textboxValue; } set { _textboxValue = setValue(value); } }
private double setValue(double invalue)
{
return invalue / 100;
}
}

Design an algorithm for guessing a card number

I am making a card guessing game.there are 100 cards place in 10rows and 10 columns each card with a number and user have to find a number he is thinking of. i want to devise an algorithm to determine whether a given number is written on one of the cards by turning up less than 20 cards.I hav created the buttons dynamically, now im having hard time making a logic to search through them.This is my code.
namespace WindowsFormsApplication3
{
public partial class Form1 : Form
{
int rememberlast = 0, move = 0;
object savelastobject;
public Form1()
{
InitializeComponent();
}
private void Form1_Load(object sender, EventArgs e)
{
int sizee = 50, where = 0;
this.Height = 0;
this.Width = 0;
var generatedNum = new List<int>();
var random = new Random();
while (generatedNum.Count < 100)
{
var tempo = random.Next(0, 100);
if (generatedNum.Contains(tempo)) continue;
generatedNum.Add(tempo);
}
char[] text2 = text.ToCharArray();
for (int x = 0; x < 10; x++)
{
for (int y = 0; y < 10; y++)
{
Button ta = new Button();
ta.Name = x.ToString()+y.ToString();
ta.Width = sizee;
ta.Height = sizee;
ta.Tag = generatedNum[where];
where++;
ta.BackColor = Color.Red;
ta.Location = new Point(70 * y, 70 * x);
Controls.Add(ta);
ta.Click += new System.EventHandler(this.button_Click);
this.Width += 90 * x / 13;
this.Height += 90 * x / 8;
}
}
}
private void button_Click(object sender, EventArgs e)
{
Control me = (Control)sender;
rememberlast = int.Parse(me.Tag.ToString());
savelastobject = me;
me.Text = me.Tag.ToString();
me.Enabled = true;
me.BackColor = Color.Gray;
move++;
label2.Text = move.ToString();
me.Enabled = true;
me.Text = me.Tag.ToString();
me.BackColor = Color.Gray;
me.Refresh();
Thread.Sleep(1000);
if (move == 20)
{
MessageBox.Show("Total Moves Consumed");
Application.Restart();
}
if (me.Tag.ToString() == textBox1.Text)
{
//Control him = (Control)savelastobject;
//him.BackColor = Color.LightBlue;
me.BackColor = Color.LightBlue;
MessageBox.Show("You Win");
Application.Restart();
}
}
}
}

c# how does timeSpan work?

I have a timer, how starts, when the text in a label appears and stop when you click on a button. Now i want to stop the reaktiontime and save it in a list, which i want to sort, so i can give out the fastest and lowest reaktiontime in a label. but in my code every time it shows 00:00:00 in the messagebox :(
public partial class Form1 : Form
{
Random r = new Random();
Random Farbe = new Random();
bool Start_MouseClick;
IList<string> Reaktionszeitliste = new List<string>() {};
IList<Color> myColors = new[] { Color.Red, Color.Blue, Color.Green, Color.White, Color.Yellow };
string[] colors = { "Rot", "Blau", "Grün", "Gelb", "Weiß" };
int Timeleft = 5;
int summe = 0, z;
string Reaktionszeit;
int Zeit;
int Spielzuege = 0;
DateTime Time1;
DateTime Time2;
TimeSpan ts;
private void btnRot_Click(object sender, EventArgs e)
{
Spielzuege = Spielzuege + 1;
timMessung.Stop();
if (Start_MouseClick == true)
{
int summe = 0, z;
lblAnzeige.Text = " ";
while (summe <= 0)
{
z = r.Next(1, 6);
summe = summe + z;
}
lblAnzeige.Text += colors[summe - 1] + "\n";
Zeit = 0;
timMessung.Enabled = true;
if (ckbExtrem.Checked == false)
{
lblAnzeige.ForeColor = myColors[Farbe.Next(myColors.Count)];
}
else
{
lblAnzeige.ForeColor = Color.FromArgb(Farbe.Next(256), Farbe.Next(256), Farbe.Next(256));
}
if (Spielzuege == 15)
{
if (txbPlayer2.Text != "")
{
MessageBox.Show("Spieler 2: Machen Sie sich bereit!");
}
else
{
MessageBox.Show(Convert.ToString(ts));
}
}
}
}
private void txbStart_MouseClick(object sender, MouseEventArgs e)
{
if (txbPlayer1.Text == "" && txbPlayer2.Text == "")
{
MessageBox.Show("Bitte geben Sie Spielername(n) ein!");
}
else
{
timVerzögerung.Enabled = true;
panel1.Visible = false;
lblAnzeige.Text = " ";
txbStart.Visible = false;
textBox1.Visible = false;
Start_MouseClick = true;
while (summe <= 0)
{
z = r.Next(1, 6);
summe = summe + z;
}
}
}
private void timMessung_Tick(object sender, EventArgs e)
{
if (timMessung.Enabled == true)
{
Time1 = DateTime.Now;
}
else
{
Time2 = DateTime.Now;
ts = Time1 - Time2;
int differenceInMilli = ts.Milliseconds;
}
}

In a first run i tried to alter your code so that it should run. But i found so many (coding style) issues within there that i simply wrote a completely new example. It also has some minor issues (e.g. size of buttons; it is possible that a color button occurs twice). But it hopefully shows you how TimeSpan and all the other parts can work together.
The Form1.cs file:
public partial class Form1 : Form
{
private Random _Random;
private List<TimeSpan> _ReactionTimes;
private Stopwatch _Stopwatch;
public Form1()
{
InitializeComponent();
_Stopwatch = new Stopwatch();
_Random = new Random(42);
_ReactionTimes = new List<TimeSpan>();
}
private Button CreateButton(Color color)
{
var button = new Button();
button.Click += OnColorButtonClick;
button.BackColor = color;
button.Text = color.Name;
return button;
}
private Button GetRandomButton()
{
var randomIndex = _Random.Next(0, flowLayoutPanel.Controls.Count);
return (Button)flowLayoutPanel.Controls[randomIndex];
}
private Color GetRandomColor()
{
var randomKnownColor = (KnownColor)_Random.Next((int)KnownColor.AliceBlue, (int)KnownColor.ButtonFace);
return Color.FromKnownColor(randomKnownColor);
}
private void InitializeColorButtons(int numberOfColors)
{
var buttons = Enumerable.Range(1, numberOfColors)
.Select(index => GetRandomColor())
.Select(color => CreateButton(color));
foreach (var button in buttons)
{
flowLayoutPanel.Controls.Add(button);
}
}
private void OnButtonStartClick(object sender, EventArgs e)
{
InitializeColorButtons((int)numericUpDownColors.Value);
StartMeasurement();
}
private void OnColorButtonClick(object sender, EventArgs e)
{
var button = (Button)sender;
if (button.Text != labelColorToClick.Text)
{
errorProviderWrongButton.SetIconPadding(button, -20);
errorProviderWrongButton.SetError(button, "Sorry, wrong button.");
return;
}
StopMeasurement();
_ReactionTimes.Add(_Stopwatch.Elapsed);
UpdateSummary();
}
private void StartMeasurement()
{
buttonStart.Enabled = false;
numericUpDownColors.Enabled = false;
labelColorToClick.Text = GetRandomButton().Text;
_Stopwatch.Reset();
_Stopwatch.Start();
}
private void StopMeasurement()
{
_Stopwatch.Stop();
errorProviderWrongButton.Clear();
flowLayoutPanel.Controls.Clear();
numericUpDownColors.Enabled = true;
buttonStart.Enabled = true;
labelColorToClick.Text = String.Empty;
}
private void UpdateSummary()
{
labelSummary.Text = String.Format("Current: {0:0.000} Minimum: {1:0.000} Maximum: {2:0.000}", _ReactionTimes.Last().TotalSeconds, _ReactionTimes.Min().TotalSeconds, _ReactionTimes.Max().TotalSeconds);
}
}
The Form1.Designer.cs file:
partial class Form1
{
/// <summary>
/// Required designer variable.
/// </summary>
private System.ComponentModel.IContainer components = null;
/// <summary>
/// Clean up any resources being used.
/// </summary>
/// <param name="disposing">true if managed resources should be disposed; otherwise, false.</param>
protected override void Dispose(bool disposing)
{
if (disposing && (components != null))
{
components.Dispose();
}
base.Dispose(disposing);
}
#region Windows Form Designer generated code
/// <summary>
/// Required method for Designer support - do not modify
/// the contents of this method with the code editor.
/// </summary>
private void InitializeComponent()
{
this.components = new System.ComponentModel.Container();
this.flowLayoutPanel = new System.Windows.Forms.FlowLayoutPanel();
this.labelColorToClick = new System.Windows.Forms.Label();
this.buttonStart = new System.Windows.Forms.Button();
this.labelSummaryHeader = new System.Windows.Forms.Label();
this.labelSummary = new System.Windows.Forms.Label();
this.errorProviderWrongButton = new System.Windows.Forms.ErrorProvider(this.components);
this.numericUpDownColors = new System.Windows.Forms.NumericUpDown();
((System.ComponentModel.ISupportInitialize)(this.errorProviderWrongButton)).BeginInit();
((System.ComponentModel.ISupportInitialize)(this.numericUpDownColors)).BeginInit();
this.SuspendLayout();
//
// flowLayoutPanel
//
this.flowLayoutPanel.Anchor = ((System.Windows.Forms.AnchorStyles)((((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Bottom)
| System.Windows.Forms.AnchorStyles.Left)
| System.Windows.Forms.AnchorStyles.Right)));
this.flowLayoutPanel.Location = new System.Drawing.Point(12, 41);
this.flowLayoutPanel.Name = "flowLayoutPanel";
this.flowLayoutPanel.Size = new System.Drawing.Size(560, 386);
this.flowLayoutPanel.TabIndex = 0;
//
// labelColorToClick
//
this.labelColorToClick.Anchor = ((System.Windows.Forms.AnchorStyles)(((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Left)
| System.Windows.Forms.AnchorStyles.Right)));
this.labelColorToClick.Location = new System.Drawing.Point(174, 12);
this.labelColorToClick.Name = "labelColorToClick";
this.labelColorToClick.Size = new System.Drawing.Size(398, 23);
this.labelColorToClick.TabIndex = 1;
this.labelColorToClick.TextAlign = System.Drawing.ContentAlignment.MiddleLeft;
//
// buttonStart
//
this.buttonStart.Location = new System.Drawing.Point(93, 12);
this.buttonStart.Name = "buttonStart";
this.buttonStart.Size = new System.Drawing.Size(75, 23);
this.buttonStart.TabIndex = 2;
this.buttonStart.Text = "Start";
this.buttonStart.UseVisualStyleBackColor = true;
this.buttonStart.Click += new System.EventHandler(this.OnButtonStartClick);
//
// labelSummaryHeader
//
this.labelSummaryHeader.Location = new System.Drawing.Point(12, 430);
this.labelSummaryHeader.Name = "labelSummaryHeader";
this.labelSummaryHeader.Size = new System.Drawing.Size(75, 23);
this.labelSummaryHeader.TabIndex = 3;
this.labelSummaryHeader.Text = "Summary:";
this.labelSummaryHeader.TextAlign = System.Drawing.ContentAlignment.MiddleLeft;
//
// labelSummary
//
this.labelSummary.Location = new System.Drawing.Point(93, 430);
this.labelSummary.Name = "labelSummary";
this.labelSummary.Size = new System.Drawing.Size(479, 23);
this.labelSummary.TabIndex = 4;
this.labelSummary.TextAlign = System.Drawing.ContentAlignment.MiddleLeft;
//
// errorProviderWrongButton
//
this.errorProviderWrongButton.BlinkStyle = System.Windows.Forms.ErrorBlinkStyle.NeverBlink;
this.errorProviderWrongButton.ContainerControl = this;
//
// numericUpDownColors
//
this.numericUpDownColors.Location = new System.Drawing.Point(12, 14);
this.numericUpDownColors.Minimum = new decimal(new int[] {
2,
0,
0,
0});
this.numericUpDownColors.Name = "numericUpDownColors";
this.numericUpDownColors.Size = new System.Drawing.Size(75, 20);
this.numericUpDownColors.TabIndex = 5;
this.numericUpDownColors.Value = new decimal(new int[] {
10,
0,
0,
0});
//
// Form1
//
this.ClientSize = new System.Drawing.Size(584, 462);
this.Controls.Add(this.numericUpDownColors);
this.Controls.Add(this.labelSummary);
this.Controls.Add(this.labelSummaryHeader);
this.Controls.Add(this.buttonStart);
this.Controls.Add(this.labelColorToClick);
this.Controls.Add(this.flowLayoutPanel);
this.Name = "Form1";
((System.ComponentModel.ISupportInitialize)(this.errorProviderWrongButton)).EndInit();
((System.ComponentModel.ISupportInitialize)(this.numericUpDownColors)).EndInit();
this.ResumeLayout(false);
}
#endregion
private System.Windows.Forms.FlowLayoutPanel flowLayoutPanel;
private System.Windows.Forms.Label labelColorToClick;
private System.Windows.Forms.Button buttonStart;
private System.Windows.Forms.Label labelSummaryHeader;
private System.Windows.Forms.Label labelSummary;
private System.Windows.Forms.ErrorProvider errorProviderWrongButton;
private System.Windows.Forms.NumericUpDown numericUpDownColors;
}

I think your problem here is that the resolution of DateTime is less than the intervals that you are trying to measure.
Instead of using DateTime, try the following:
Create a private Stopwatch field called stopwatch.
Stopwatch stopwatch = new Stopwatch();
Then change your tick handler to:
private void timMessung_Tick(object sender, EventArgs e)
{
if (timMessung.Enabled == true)
{
stopwatch.Restart();
}
else
{
ts.stopwatch.Elapsed();
}
}
However, I'm also not sure about your logic to do with when you restart the stopwatch. (Where I put stopwatch.Restart().) Do you really want to keep restarting the stopwatch at that point?

use:
ts = Time1.subtract(Time2);
How to calculate datetime diffrence:
How to calculate hours between 2 different dates in c#

Head First C# Lab1 A Day at the Races called method not executing

I have a problem with the greyhound application that I have created. when I use the radio button to select who is placing a bet (Say Bob) and put his bet amount to 10 on dog number 4, (see image #1) when I click Bets, to update the 'Bob hasnt placed any bets' label with the description() method I get an error (see image #2)
What should happen is where it says "bob hasnt placed any bets" it should now read "bob bets 10 bucks on dog # 4. I have established this is failing due to the bettor returning NULL, but I cannot work out why this is when Bettor is referencing the Guy class which contains the bettor's name.
On a side notem when the race finishes and if Bob wins, he is note getting paid so either the PayOut() or Collect() methods are not working either.
Below are my 3 classes and my Form1.cs
Greyhound.cs
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Windows;
using System.Drawing;
using System.Windows.Forms;
namespace A_Day_at_the_Races
{
public class Greyhound
{
public int StartingPosition; //Where my PictureBox starts
public int RacetrackLength; // How long the racetrack is
public PictureBox MyPictureBox = null; //My PictureBox object
public int Location = 0; // My Location on the racetrack
public Random Randomizer; // An instance of Random
public bool Run()
{
//1. Move forward either 1,2,3 or 4 spaces at random
int moveforward = Randomizer.Next(1, 4); // declare an int called 'moveforward' will move forward 1,2,3 or 4 spaces at random
//2. Update the position of my PictureBox on the form
Point p = MyPictureBox.Location; // current location of the picture of the greyhound
p.X += moveforward;
MyPictureBox.Location = p;
//3. Return true if I won the race
if (p.X >= RacetrackLength)
return true;
else
return false;
}
public void TakeStartingPosition()
{
//Reset my location to the start line
//MyPictureBox.Location.X = StartingPosition;
StartingPosition = 0;
}
}
}
Guy.cs
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Windows.Forms;
namespace A_Day_at_the_Races
{
public class Guy
{
public string Name; // The guy's name
public Bet MyBet = null; // An instance of bet() that has how much he's betting
public int Cash; // How much cash he has
// these last two fields are the guy's GUI controls on the form
public RadioButton MyRadioButton; // My RadioButton
public Label MyLabel; // My Label
public void UpdateLabels()
{
//1.Set my label to my bet's description,
if (MyBet == null)
MyLabel.Text = Name + " hasnt placed any bets";
else
MyLabel.Text = MyBet.GetDescription();
//2.Set the label on my radio button to show my cash ("Joe has 43 dollars")
MyRadioButton.Text = Name + " has " + Cash + " bucks";
}
public void ClearBet()
{
//1.Reset my bet so it's zero
MyBet = null;
}
//1.Place a new bet and store it in my bet field
//2.Return true if the guy had enough money to bet
public bool PlaceBet(int Amount, int Dog)
{
this.MyBet = new Bet();
if (Cash >= Amount)
{
Cash = Cash - Amount;
MyLabel = new Label();
MyBet.Amount = Amount;
MyBet.Dog = Dog;
UpdateLabels();
return true;
}
else
{
return false;
}
}
public void Collect(int Winner)
{
if (MyBet != null)
//1.Ask my bet to pay out (hint use the bet object to do the work)
Cash += MyBet.PayOut(Winner);
}
}
}
Bet.cs
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Windows.Forms;
namespace A_Day_at_the_Races
{
public class Bet
{
public int Amount; // The amount of cash that was bet
public int Dog; // The number of the dog the bet is on
public Guy Bettor; // The guy who placed the bet
public string GetDescription()
{
if (Amount > 0)
return Bettor.Name + " bets " + Amount + " bucks on dog #" + Dog;
else
return Bettor.Name + " hasnt placed a bet";
}
public int PayOut(int Winner)
{
if (Winner == Dog)
return Amount;
else
return -1 * Amount;
}
}
}
Form1.cs
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
namespace A_Day_at_the_Races
{
public partial class Form1 : Form
{
Guy[] Bettors;
Greyhound[] Dogs;
Guy CurrentBettor;
public Form1()
{
InitializeComponent();
Random Randomizer = new Random();
//initialise all my guys and dogs
Bettors = new Guy[3];
Dogs = new Greyhound[4];
//guys
Bettors[0] = new Guy();
Bettors[0].Name = "Joe";
Bettors[0].MyRadioButton = joeRadioButton;
Bettors[0].MyLabel = joeBetLabel;
Bettors[0].Cash = 50;
Bettors[0].UpdateLabels();
Bettors[1] = new Guy();
Bettors[1].Name = "Bob";
Bettors[1].MyRadioButton = bobRadioButton;
Bettors[1].MyLabel = bobBetLabel;
Bettors[1].Cash = 75;
Bettors[1].UpdateLabels();
Bettors[2] = new Guy();
Bettors[2].Name = "Al";
Bettors[2].MyRadioButton = alRadioButton;
Bettors[2].MyLabel = alBetLabel;
Bettors[2].Cash = 45;
Bettors[2].UpdateLabels();
int StartPosition = pictureBoxDog1.Location.X;
int distance = pictureBox1.Width;
for (int i = 0; i < 4; i++)
{
Dogs[i] = new Greyhound();
Dogs[i].Randomizer = Randomizer;
Dogs[i].RacetrackLength = distance;
Dogs[i].Location = Dogs[i].StartingPosition = StartPosition;
}
Dogs[0].MyPictureBox = pictureBoxDog1;
Dogs[1].MyPictureBox = pictureBoxDog2;
Dogs[2].MyPictureBox = pictureBoxDog3;
Dogs[3].MyPictureBox = pictureBoxDog4;
CurrentBettor = Bettors[0];
}
private void RaceButton_Click(object sender, EventArgs e)
{
int winner = 0;
int num_winners = 0;
while (num_winners == 0)
{
for (int i = 0; i < Dogs.Length; i++)
{
if (Dogs[i].Run())
{
num_winners++;
winner = i + 1;
}
}
Application.DoEvents();
System.Threading.Thread.Sleep(3);
}
if (num_winners > 1)
MessageBox.Show("We have " + num_winners + " winners");
else
MessageBox.Show(" Dog #" + winner + "wins!");
for (int i = 0; i < Dogs.Length; i++)
{
Dogs[i].TakeStartingPosition();
}
for (int i = 0; i < Bettors.Length; i ++)
{
Bettors[i].Collect(winner);
Bettors[i].ClearBet();
Bettors[i].UpdateLabels();
}
numericUpDownBet.Value = numericUpDownBet.Minimum;
numericUpDownDog.Value = numericUpDownDog.Minimum;
}
private void joeRadioButton_CheckedChanged(object sender, EventArgs e)
{
SetBettor(0);
}
private void bobRadioButton_CheckedChanged_1(object sender, EventArgs e)
{
SetBettor(1);
}
private void alRadioButton_CheckedChanged_1(object sender, EventArgs e)
{
SetBettor(2);
}
private void BetsButton_Click(object sender, EventArgs e)
{
CurrentBettor.PlaceBet((int)numericUpDownBet.Value, (int)numericUpDownDog.Value);
CurrentBettor.UpdateLabels();
}
private void SetBettor(int index)
{
CurrentBettor = Bettors[index];
NameLabel.Text = CurrentBettor.Name;
if (CurrentBettor.MyBet != null)
{
numericUpDownBet.Value = CurrentBettor.MyBet.Amount;
numericUpDownDog.Value = CurrentBettor.MyBet.Dog;
}
else
{
numericUpDownBet.Value = numericUpDownBet.Minimum;
numericUpDownDog.Value = 1;
}
}
private void Form1_Load(object sender, EventArgs e)
{
minimumBetLabel.Text = "Minimum Bet $5.00";
}
private void ResetButton_Click(object sender, EventArgs e)
{
pictureBoxDog1.Location = new Point(61,32);
pictureBoxDog2.Location = new Point(61,84);
pictureBoxDog3.Location = new Point(61,131);
pictureBoxDog4.Location = new Point(61,181);
}
}
}
Form1.Designer.cs
namespace A_Day_at_the_Races
{
partial class Form1
{
/// <summary>
/// Required designer variable.
/// </summary>
private System.ComponentModel.IContainer components = null;
/// <summary>
/// Clean up any resources being used.
/// </summary>
/// <param name="disposing">true if managed resources should be disposed; otherwise, false.</param>
protected override void Dispose(bool disposing)
{
if (disposing && (components != null))
{
components.Dispose();
}
base.Dispose(disposing);
}
#region Windows Form Designer generated code
/// <summary>
/// Required method for Designer support - do not modify
/// the contents of this method with the code editor.
/// </summary>
private void InitializeComponent()
{
System.ComponentModel.ComponentResourceManager resources = new System.ComponentModel.ComponentResourceManager(typeof(Form1));
this.pictureBox1 = new System.Windows.Forms.PictureBox();
this.pictureBoxDog1 = new System.Windows.Forms.PictureBox();
this.pictureBoxDog2 = new System.Windows.Forms.PictureBox();
this.pictureBoxDog3 = new System.Windows.Forms.PictureBox();
this.pictureBoxDog4 = new System.Windows.Forms.PictureBox();
this.RaceButton = new System.Windows.Forms.Button();
this.minimumBetLabel = new System.Windows.Forms.Label();
this.joeRadioButton = new System.Windows.Forms.RadioButton();
this.bobRadioButton = new System.Windows.Forms.RadioButton();
this.alRadioButton = new System.Windows.Forms.RadioButton();
this.BetsLabel = new System.Windows.Forms.Label();
this.joeBetLabel = new System.Windows.Forms.Label();
this.bobBetLabel = new System.Windows.Forms.Label();
this.alBetLabel = new System.Windows.Forms.Label();
this.NameLabel = new System.Windows.Forms.Label();
this.BetsButton = new System.Windows.Forms.Button();
this.numericUpDownBet = new System.Windows.Forms.NumericUpDown();
this.label1 = new System.Windows.Forms.Label();
this.numericUpDownDog = new System.Windows.Forms.NumericUpDown();
this.ResetButton = new System.Windows.Forms.Button();
((System.ComponentModel.ISupportInitialize)(this.pictureBox1)).BeginInit();
((System.ComponentModel.ISupportInitialize)(this.pictureBoxDog1)).BeginInit();
((System.ComponentModel.ISupportInitialize)(this.pictureBoxDog2)).BeginInit();
((System.ComponentModel.ISupportInitialize)(this.pictureBoxDog3)).BeginInit();
((System.ComponentModel.ISupportInitialize)(this.pictureBoxDog4)).BeginInit();
((System.ComponentModel.ISupportInitialize)(this.numericUpDownBet)).BeginInit();
((System.ComponentModel.ISupportInitialize)(this.numericUpDownDog)).BeginInit();
this.SuspendLayout();
//
// pictureBox1
//
this.pictureBox1.Image = ((System.Drawing.Image)(resources.GetObject("pictureBox1.Image")));
this.pictureBox1.Location = new System.Drawing.Point(12, 12);
this.pictureBox1.Name = "pictureBox1";
this.pictureBox1.Size = new System.Drawing.Size(602, 201);
this.pictureBox1.TabIndex = 0;
this.pictureBox1.TabStop = false;
//
// pictureBoxDog1
//
this.pictureBoxDog1.Image = ((System.Drawing.Image)(resources.GetObject("pictureBoxDog1.Image")));
this.pictureBoxDog1.Location = new System.Drawing.Point(22, 21);
this.pictureBoxDog1.Name = "pictureBoxDog1";
this.pictureBoxDog1.Size = new System.Drawing.Size(75, 21);
this.pictureBoxDog1.TabIndex = 1;
this.pictureBoxDog1.TabStop = false;
//
// pictureBoxDog2
//
this.pictureBoxDog2.Image = ((System.Drawing.Image)(resources.GetObject("pictureBoxDog2.Image")));
this.pictureBoxDog2.Location = new System.Drawing.Point(22, 70);
this.pictureBoxDog2.Name = "pictureBoxDog2";
this.pictureBoxDog2.Size = new System.Drawing.Size(75, 22);
this.pictureBoxDog2.TabIndex = 2;
this.pictureBoxDog2.TabStop = false;
//
// pictureBoxDog3
//
this.pictureBoxDog3.Image = ((System.Drawing.Image)(resources.GetObject("pictureBoxDog3.Image")));
this.pictureBoxDog3.Location = new System.Drawing.Point(22, 120);
this.pictureBoxDog3.Name = "pictureBoxDog3";
this.pictureBoxDog3.Size = new System.Drawing.Size(75, 24);
this.pictureBoxDog3.TabIndex = 3;
this.pictureBoxDog3.TabStop = false;
//
// pictureBoxDog4
//
this.pictureBoxDog4.Image = ((System.Drawing.Image)(resources.GetObject("pictureBoxDog4.Image")));
this.pictureBoxDog4.Location = new System.Drawing.Point(22, 170);
this.pictureBoxDog4.Name = "pictureBoxDog4";
this.pictureBoxDog4.Size = new System.Drawing.Size(75, 24);
this.pictureBoxDog4.TabIndex = 4;
this.pictureBoxDog4.TabStop = false;
//
// RaceButton
//
this.RaceButton.Location = new System.Drawing.Point(468, 269);
this.RaceButton.Name = "RaceButton";
this.RaceButton.Size = new System.Drawing.Size(146, 73);
this.RaceButton.TabIndex = 5;
this.RaceButton.Text = "Race!";
this.RaceButton.UseVisualStyleBackColor = true;
this.RaceButton.Click += new System.EventHandler(this.RaceButton_Click);
//
// minimumBetLabel
//
this.minimumBetLabel.AutoSize = true;
this.minimumBetLabel.Font = new System.Drawing.Font("Microsoft Sans Serif", 8.25F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((byte)(0)));
this.minimumBetLabel.Location = new System.Drawing.Point(9, 241);
this.minimumBetLabel.Name = "minimumBetLabel";
this.minimumBetLabel.Size = new System.Drawing.Size(0, 13);
this.minimumBetLabel.TabIndex = 6;
//
// joeRadioButton
//
this.joeRadioButton.AutoSize = true;
this.joeRadioButton.Location = new System.Drawing.Point(12, 269);
this.joeRadioButton.Name = "joeRadioButton";
this.joeRadioButton.Size = new System.Drawing.Size(85, 17);
this.joeRadioButton.TabIndex = 7;
this.joeRadioButton.TabStop = true;
this.joeRadioButton.Text = "radioButton1";
this.joeRadioButton.UseVisualStyleBackColor = true;
this.joeRadioButton.CheckedChanged += new System.EventHandler(this.joeRadioButton_CheckedChanged);
//
// bobRadioButton
//
this.bobRadioButton.AutoSize = true;
this.bobRadioButton.Location = new System.Drawing.Point(12, 293);
this.bobRadioButton.Name = "bobRadioButton";
this.bobRadioButton.Size = new System.Drawing.Size(85, 17);
this.bobRadioButton.TabIndex = 8;
this.bobRadioButton.TabStop = true;
this.bobRadioButton.Text = "radioButton1";
this.bobRadioButton.UseVisualStyleBackColor = true;
this.bobRadioButton.CheckedChanged += new System.EventHandler(this.bobRadioButton_CheckedChanged_1);
//
// alRadioButton
//
this.alRadioButton.AutoSize = true;
this.alRadioButton.Location = new System.Drawing.Point(12, 317);
this.alRadioButton.Name = "alRadioButton";
this.alRadioButton.Size = new System.Drawing.Size(85, 17);
this.alRadioButton.TabIndex = 9;
this.alRadioButton.TabStop = true;
this.alRadioButton.Text = "radioButton2";
this.alRadioButton.UseVisualStyleBackColor = true;
this.alRadioButton.CheckedChanged += new System.EventHandler(this.alRadioButton_CheckedChanged_1);
//
// BetsLabel
//
this.BetsLabel.AutoSize = true;
this.BetsLabel.Font = new System.Drawing.Font("Microsoft Sans Serif", 8.25F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((byte)(0)));
this.BetsLabel.Location = new System.Drawing.Point(164, 241);
this.BetsLabel.Name = "BetsLabel";
this.BetsLabel.Size = new System.Drawing.Size(32, 13);
this.BetsLabel.TabIndex = 10;
this.BetsLabel.Text = "Bets";
//
// joeBetLabel
//
this.joeBetLabel.AutoSize = true;
this.joeBetLabel.Location = new System.Drawing.Point(164, 269);
this.joeBetLabel.Name = "joeBetLabel";
this.joeBetLabel.Size = new System.Drawing.Size(35, 13);
this.joeBetLabel.TabIndex = 11;
this.joeBetLabel.Text = "label1";
//
// bobBetLabel
//
this.bobBetLabel.AutoSize = true;
this.bobBetLabel.Location = new System.Drawing.Point(164, 293);
this.bobBetLabel.Name = "bobBetLabel";
this.bobBetLabel.Size = new System.Drawing.Size(35, 13);
this.bobBetLabel.TabIndex = 12;
this.bobBetLabel.Text = "label1";
//
// alBetLabel
//
this.alBetLabel.AutoSize = true;
this.alBetLabel.Location = new System.Drawing.Point(164, 317);
this.alBetLabel.Name = "alBetLabel";
this.alBetLabel.Size = new System.Drawing.Size(35, 13);
this.alBetLabel.TabIndex = 13;
this.alBetLabel.Text = "label1";
//
// NameLabel
//
this.NameLabel.AutoSize = true;
this.NameLabel.Location = new System.Drawing.Point(9, 359);
this.NameLabel.Name = "NameLabel";
this.NameLabel.Size = new System.Drawing.Size(0, 13);
this.NameLabel.TabIndex = 14;
//
// BetsButton
//
this.BetsButton.Location = new System.Drawing.Point(54, 354);
this.BetsButton.Name = "BetsButton";
this.BetsButton.Size = new System.Drawing.Size(75, 23);
this.BetsButton.TabIndex = 15;
this.BetsButton.Text = "Bets";
this.BetsButton.UseVisualStyleBackColor = true;
this.BetsButton.Click += new System.EventHandler(this.BetsButton_Click);
//
// numericUpDownBet
//
this.numericUpDownBet.Location = new System.Drawing.Point(135, 357);
this.numericUpDownBet.Minimum = new decimal(new int[] {
5,
0,
0,
0});
this.numericUpDownBet.Name = "numericUpDownBet";
this.numericUpDownBet.Size = new System.Drawing.Size(72, 20);
this.numericUpDownBet.TabIndex = 16;
this.numericUpDownBet.Value = new decimal(new int[] {
5,
0,
0,
0});
//
// label1
//
this.label1.AutoSize = true;
this.label1.Location = new System.Drawing.Point(214, 359);
this.label1.Name = "label1";
this.label1.Size = new System.Drawing.Size(113, 13);
this.label1.TabIndex = 17;
this.label1.Text = "bucks on dog number ";
//
// numericUpDownDog
//
this.numericUpDownDog.Location = new System.Drawing.Point(334, 356);
this.numericUpDownDog.Maximum = new decimal(new int[] {
4,
0,
0,
0});
this.numericUpDownDog.Minimum = new decimal(new int[] {
1,
0,
0,
0});
this.numericUpDownDog.Name = "numericUpDownDog";
this.numericUpDownDog.Size = new System.Drawing.Size(79, 20);
this.numericUpDownDog.TabIndex = 18;
this.numericUpDownDog.Value = new decimal(new int[] {
1,
0,
0,
0});
//
// ResetButton
//
this.ResetButton.Location = new System.Drawing.Point(468, 349);
this.ResetButton.Name = "ResetButton";
this.ResetButton.Size = new System.Drawing.Size(146, 41);
this.ResetButton.TabIndex = 19;
this.ResetButton.Text = "Reset";
this.ResetButton.UseVisualStyleBackColor = true;
this.ResetButton.Click += new System.EventHandler(this.ResetButton_Click);
//
// Form1
//
this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
this.ClientSize = new System.Drawing.Size(626, 410);
this.Controls.Add(this.ResetButton);
this.Controls.Add(this.numericUpDownDog);
this.Controls.Add(this.label1);
this.Controls.Add(this.numericUpDownBet);
this.Controls.Add(this.BetsButton);
this.Controls.Add(this.NameLabel);
this.Controls.Add(this.alBetLabel);
this.Controls.Add(this.bobBetLabel);
this.Controls.Add(this.joeBetLabel);
this.Controls.Add(this.BetsLabel);
this.Controls.Add(this.alRadioButton);
this.Controls.Add(this.bobRadioButton);
this.Controls.Add(this.joeRadioButton);
this.Controls.Add(this.minimumBetLabel);
this.Controls.Add(this.RaceButton);
this.Controls.Add(this.pictureBoxDog4);
this.Controls.Add(this.pictureBoxDog3);
this.Controls.Add(this.pictureBoxDog2);
this.Controls.Add(this.pictureBoxDog1);
this.Controls.Add(this.pictureBox1);
this.Name = "Form1";
this.Text = "Form1";
this.Load += new System.EventHandler(this.Form1_Load);
((System.ComponentModel.ISupportInitialize)(this.pictureBox1)).EndInit();
((System.ComponentModel.ISupportInitialize)(this.pictureBoxDog1)).EndInit();
((System.ComponentModel.ISupportInitialize)(this.pictureBoxDog2)).EndInit();
((System.ComponentModel.ISupportInitialize)(this.pictureBoxDog3)).EndInit();
((System.ComponentModel.ISupportInitialize)(this.pictureBoxDog4)).EndInit();
((System.ComponentModel.ISupportInitialize)(this.numericUpDownBet)).EndInit();
((System.ComponentModel.ISupportInitialize)(this.numericUpDownDog)).EndInit();
this.ResumeLayout(false);
this.PerformLayout();
}
#endregion
private System.Windows.Forms.PictureBox pictureBox1;
private System.Windows.Forms.PictureBox pictureBoxDog1;
private System.Windows.Forms.PictureBox pictureBoxDog2;
private System.Windows.Forms.PictureBox pictureBoxDog3;
private System.Windows.Forms.PictureBox pictureBoxDog4;
private System.Windows.Forms.Button RaceButton;
private System.Windows.Forms.Label minimumBetLabel;
private System.Windows.Forms.RadioButton joeRadioButton;
private System.Windows.Forms.RadioButton bobRadioButton;
private System.Windows.Forms.RadioButton alRadioButton;
private System.Windows.Forms.Label BetsLabel;
private System.Windows.Forms.Label joeBetLabel;
private System.Windows.Forms.Label bobBetLabel;
private System.Windows.Forms.Label alBetLabel;
private System.Windows.Forms.Label NameLabel;
private System.Windows.Forms.Button BetsButton;
private System.Windows.Forms.NumericUpDown numericUpDownBet;
private System.Windows.Forms.Label label1;
private System.Windows.Forms.NumericUpDown numericUpDownDog;
private System.Windows.Forms.Button ResetButton;
}
}

in PlaceBet method you have forgotten to set the Bettor property:
if (Cash >= Amount)
{
Cash = Cash - Amount;
MyLabel = new Label();
MyBet.Amount = Amount; // HERE
MyBet.Dog = Dog; // HERE
UpdateLabels();
return true;
just add there also a line:
MyBet.Bettor = this;
Explanation/rationale: The point is that without it, when a "Guy" creates a "Bet", the Bet does not get to know who has created it. Nowhere in your code you set the Bettor field, so it never has a chance to be set to something meaningful. The bet will simply retain the default NULL value in this field. As I do not actually read/trace all the code, I think the simpliest way would be to make the Bet know his owner straight from the very beginning.

In Guy.cs when you call PlaceBet(...) and create instantiate the bet, you need to set:
this.MyBet.Bettor = this;
Within this function, this refers to the instance of Guy that is placing the bet.
The second problem you have is with the creation of a new instance of Label, without actually replacing the Label on your form with the new one. In summary fix the PlaceBet(...) method like so:
public bool PlaceBet(int Amount, int Dog)
{
this.MyBet = new Bet();
if (Cash >= Amount)
{
Cash = Cash - Amount;
// remove the following line
// MyLabel = new Label();
MyBet.Amount = Amount;
MyBet.Dog = Dog;
// insert this line...
MyBet.Bettor = this;
UpdateLabels();
return true;
}
else
{
return false;
}
}

I just performed this exercise myself in the book... been running through it. I looked over your code to see how you took care of this problem and I found a pretty big bug in how you handled paying out the betters - In form1.cs when you allow your loop to capture multiple winners you are not continuing to distribute winnings with the Collect method to anyone who bet on anything besides the last winning dog
while (num_winners == 0)
{
for (int i = 0; i < Dogs.Length; i++)
{
if (Dogs[i].Run())
{
num_winners++;
winner = i + 1;
}
}
Application.DoEvents();
System.Threading.Thread.Sleep(3);
}
if (num_winners > 1)
// you say that you have multiple winners right here but you never eval on
//it - winner is still set to one value above
MessageBox.Show("We have " + num_winners + " winners");
else
MessageBox.Show(" Dog #" + winner + "wins!");
for (int i = 0; i < Dogs.Length; i++)
{
Dogs[i].TakeStartingPosition();
}
for (int i = 0; i < Bettors.Length; i ++)
{
Bettors[i].Collect(winner);
Bettors[i].ClearBet();
Bettors[i].UpdateLabels();
}
What will need to be changed to correct this and disperse bets appropriately:
1) Make the betting scheme more realistic - when the bet is placed - subtract the money. You need to allow for a Re-Bet to take place just in case someone wants to redo one of the users on the front page
in guy.cs
public bool PlaceBet(int amount, int dog)
{
// place a new bet and store it in the bet field, return true if there is enough money
if (amount > Cash)
{
MessageBox.Show("I don't have enough money for that bet!", Name + " says...");
return false;
}
else
{
if (this.MyBet == null)
{
this.MyBet = new Bet() { Amount = amount, Bettor = this, Dog = dog };
this.Cash -= amount;
this.UpdateLabels();
return true;
}
else
{
this.Cash += this.MyBet.Amount;
this.MyBet = null;
this.MyBet = new Bet() { Amount = amount, Bettor = this, Dog = dog };
this.Cash -= amount;
this.UpdateLabels();
return true;
}
}
}
2) Now that the betters already lost/submitted their money and we don't have to worry about sending negative monies to them if their dog doesn't win, the Bet.cs Payout method can be updated to only provide a positive return if the winning dog matches their bet dog. if it doesn't, it returns nothing.
public int PayOut(int Winner)
{
// the parameter is the winner of the race. If the dog won, return the amount bet.
// otherwise return nothing
if (Winner == Dog)
{
int payout = Amount*2;
return payout;
}
else
{
int payout = 0;
return payout;
}
}
3) and now we can adjust our scheme in form1.cs to take care of paying multiples (even though this never really happens)
private void formButtonRace_Click(object sender, EventArgs e)
{
int winner = 0;
int windog = 0;
int count = 0;
for (int i = 0; i < Bettors.Length; i++)
{
if (Bettors[1].MyBet != null)
{
count++;
}
}
if (count == Bettors.Length)
{
while (winner == 0)
{
for (int i = 0; i < Dogs.Length; i++)
{
if (Dogs[i].Run())
{
winner++;
windog = i + 1;
for (int i2 = 0; i2 < Bettors.Length; i2++)
{
Bettors[i2].Collect(i + 1);
}
}
Application.DoEvents();
System.Threading.Thread.Sleep(3);
}
}
if (winner > 1)
{
MessageBox.Show("Multiple winners!", "WOW");
}
else
{
MessageBox.Show("The winner was dog #" + windog);
}
for (int i = 0; i < Bettors.Length; i++)
{
Bettors[i].ClearBet(true);
}
for (int i = 0; i < Dogs.Length; i++)
{
Dogs[i].TakeStartingPosition();
}
}
else
{
MessageBox.Show("Not all players have placed their bets!", "Wait wait!");
}
}
The reason why my ClearBet is passing in a bool is because I had to restore the money bet to each individual Guy if the reset button was pressed. However, if the race was completed I wanted to reset them without returning their bets.
This is that section for me in my code:
public void ClearBet(bool isRaceOver)
{
if (isRaceOver)
// reset bet when race is over
{
MyBet = null;
}
else
{
if (this.MyBet != null)
{
Cash += this.MyBet.Amount;
this.MyBet = null;
}
else
{
this.MyBet = null;
}
}
UpdateLabels();
}

In the PlaceBet() method, you are overwriting MyLabel with a new Label() therefore the original context of the label on the form is lost.
Although you are actually updating a Label, it's not the Label on the form.
public bool PlaceBet(int Amount, int Dog)
{
this.MyBet = new Bet();
if (Cash >= Amount)
{
Cash = Cash - Amount;
MyLabel = new Label(); // remove this
MyBet.Amount = Amount;
MyBet.Dog = Dog;
UpdateLabels();
return true;
}
else
{
return false;
}
}