I have really been struggling with this question for a long time.
I add a textbox and a button on tab press . I put text inside the textboxes:
Now, my question, how do I remove the textbox next to the button I click and move all the textboxes down, so I won't get any open space. If I press on the button next to the 7th textbox, I want it to look like this:
here's my code:
private void Form1_Load(object sender, EventArgs e)
{
//creates a textbox(t0) and a button(b0) on load
TextBox t0 = new TextBox();
t0.Name = "t0";
t0.Location = new Point(16, 12);
t0.Width = 200;
t0.PreviewKeyDown += new PreviewKeyDownEventHandler(PreviewKeyDown);
Button b0 = new Button();
b0.TabStop = false;
b0.Text = "x";
b0.Location = new Point(216, 11);
b0.Size = new System.Drawing.Size(20, 22);
b0.Click += new EventHandler(buttonclicked);
panel1.Controls.Add(t0);
panel1.Controls.Add(b0);
}
private new void PreviewKeyDown(object sender, PreviewKeyDownEventArgs e)
{
//if I press tab in the last textbox it creates a new textbox(t + amount of textboxes) and button(b + amount of textboxes)
if (e.KeyData == Keys.Tab)
{
int counter2 = 0;
foreach (TextBox box in panel1.Controls.OfType<TextBox>())
{
counter2++;
}
counter2 = counter2 - 1;
string Name = "t" + Convert.ToString(counter2);
counter2++;
foreach (TextBox box in panel1.Controls.OfType<TextBox>())
{
if (Name == box.Name && box.Focused)
{
TextBox t0 = new TextBox();
Button b0 = new Button();
t0.Location = new Point(16, 12 + counter - panel1.VerticalScroll.Value);
t0.Width = 200;
t0.Name = "t" + Convert.ToString(counter2);
t0.PreviewKeyDown += new PreviewKeyDownEventHandler(PreviewKeyDown);
b0.TabStop = false;
b0.Text = "x";
b0.Name = "b" + Convert.ToString(counter2);
b0.Location = new Point(216, 11 + counter - panel1.VerticalScroll.Value);
b0.Size = new System.Drawing.Size(20, 22);
b0.Click += new EventHandler(buttonclicked);
panel1.Controls.Add(t0);
panel1.Controls.Add(b0);
counter = counter + 25;
}
}
}
}
private void buttonclicked(object sender, EventArgs e)
{
//Remove the textbox next to it.
}
Any help is appreciated
I suggest you use a TableLayoutPanel. Set the GrowStyle on the TableLayoutPanel to AddRows or AddColumns and then you can add/remove controls to it and it will resize automatically. Set the height of each row to a number a little bigger than the height of the textbox. Set the column widths to a value so the textbox and the button can fit in them. You need 2 columns in it.
You do not need to set the location of the controls to a static location. They will be handled by the TableLayoutPanel for you.
Here is how you can add new controls to it.
yourTableLayoutPanel.Controls.Add(yourTextbox1, 0 /* Column Index */, 0 /* Row index */);
Related
I create as many dynamic labels as the user wants.
for (int j = 0; j < Nitelik_Counter; j++)
{
Label labeltest= new Label();
labeltest.Text = "N - " + j.ToString();
labeltest.TextAlign = ContentAlignment.MiddleCenter;
labeltest.Location = new Point(10 + j * 70, 10);
}
And I determine their text like "N+i.toString()" for default.
After that, I'm adding this to the form. I want to do is when the form is open and the user double-clicks one of the labels, a rename function will be open like in the Windows os, and when the user presses the enter it must be save. How do I do that?
When you create labels, setup DoubleClick handler like this:
// ...
Label labeltest= new Label();
labeltest.DoubleClick += Label_DoubleClick;
In the handler, you can add temporary TextBox to the form, place it over the original label, wait until the user presses Enter or Escape and then either change the original text or not and remove the textbox, like this:
protected void Label_DoubleClick(object? sender, EventArgs e)
{
if (sender is Label label)
{
var box = new TextBox();
box.Name = "TextField";
box.Text = label.Text;
box.TextAlign = HorizontalAlignment.Center;
box.AutoSize = false;
box.Dock = DockStyle.None;
box.Size = label.Size;
box.Location = this.PointToClient(label.Parent.PointToScreen(label.Location));
box.BackColor = BackColor;
box.PreviewKeyDown += (a, b) => {
if (b.KeyCode == Keys.Escape)
{
box.Parent.Controls.Remove(box);
}
else if (b.KeyCode == Keys.Enter)
{
label.Text = box.Text;
box.Parent.Controls.Remove(box);
}
};
box.LostFocus += (a, b) => { box.Parent?.Controls.Remove(box); };
Controls.Add(box);
Controls.SetChildIndex(box, 0);
box.SelectAll();
box.Focus();
}
}
I wanna change the Text properties of Label using Buttons just like in hangman; but after I created the Label, I became confused when I try to access the specific Label
// creating label
for (int i = 0; i < numericUpDown1.Value; i++)
{
Label l = new Label();
l.Text = "_";
l.Width = 20;
l.Height = 25;
l.Left = i * 20 + 510;
l.Top = 20;
l.BackColor = Color.Transparent;
groupBox2.Controls.Add(l);
}
// function to change the label text
// if I clicked the button
// the first label text will be changed to the text in the button i clicked
private void B_Click(object sender, EventArgs e)
{
var thsBtn = (Button)sender;
bool benar = false;
if (benar == false)
{
thsBtn.Text = " ";
thsBtn.Enabled = false;
}
else
{
thsBtn.Enabled = false;
}
}
You can organize created Labels into a collection, say, List<Label>:
private List<Label> m_CreatedLabels = new List<Label>();
...
// Remove all previous labels
foreach (Label lbl in m_CreatedLabels)
lbl.Dispose();
m_CreatedLabels.Clear();
// Create new ones
for (int i = 0; i < numericUpDown1.Value; i++) {
m_CreatedLabels.Add(new Label() {
Text = "_",
Width = 20,
Height = 25,
Left = i * 20 + 510,
Top = 20,
BackColor = Color.Transparent,
Parent = groupBox2
});
}
Now you have m_CreatedLabels collection to work with created Labels, e.g.
private void B_Click(object sender, EventArgs e) {
var thsBtn = sender as Button;
// you may want to add a condition into FirstOrDefault(), e.g.
// .FirstOrDefault(lbl => lbl.Text == "_")
// - first label with "_" Text
Label lblToProcess = m_CreatedLabels
.FirstOrDefault();
if (null != lblToProcess)
lblToProcess.Text = thsBtn.Text;
thsBtn.Enabled = false;
}
One option here is to give your dynamically created Label instances a Name. From there, you should be able to use ControlCollection.Find to find your Label instances by name.
private void CreateLabels()
{
for (int i = 0; i < numericUpDown1.Value; i++)
{
Label l = new Label();
l.Name = $"DynamicLabel{i}";
l.Text = "_";
l.Width = 20;
l.Height = 25;
l.Left = i * 20 + 510;
l.Top = 20;
l.BackColor = Color.Transparent;
groupBox2.Controls.Add(l);
}
}
private void DoSomethingWithADynamicLabel(int dynamicLabelIndex)
{
Label l = groupBox2.Controls.Find($"DynamicLabel{i}", true).FirstOrDefault() as Label;
if (l is null)
{
// Couldn't find the label...
return;
}
// Do something with l
}
When creating the Label instances inside CreateLabels, I'm simply appending the for loop's counter to the string "DynamicLabel". This gives you a bunch of Labels with names like "DynamicLabel0", "DynamicLable1", "DynamicLabel2", etc...
Then in DoSomethingWithADynamicLabel, assuming you have the index of the Label you want to deal with, you can use groupBox2.Controls.Find to actually find the Label you're interested in. ControlCollection.Find returns Control[], so calling FirstOrDefault will take the first item from the array or null if no Control with the given name exists.
Hey guys/girls I got myself stuck and I was hoping I could get some help with it. simply said I'm trying to make a soccerpool on windows form. Because the player can put in as many team's as he/she wants I put the code that makes the betting panels in a (for)loop with the text as 0. very handy if I say so myself but now I can't retrieve the correct input from the user or without breaking the loop. any idea's?
for (int i = 0; i < hometable.Rows.Count; i++)
{
DataRow dataRowHome = hometable.Rows[i];
DataRow dataRowAway = awayTable.Rows[i];
Label lblHomeTeam = new Label();
Label lblAwayTeam = new Label();
TextBox txtHomePred = new TextBox();
TextBox txtAwayPred = new TextBox();
lblHomeTeam.TextAlign = ContentAlignment.BottomRight;
lblHomeTeam.Text = dataRowHome["TeamName"].ToString();
lblHomeTeam.Location = new Point(15, txtHomePred.Bottom + (i * 30));
lblHomeTeam.AutoSize = true;
txtHomePred.Text = "0";
txtHomePred.Location = new Point(lblHomeTeam.Width, lblHomeTeam.Top - 3);
txtHomePred.Width = 40;
txtAwayPred.Text = "0";
txtAwayPred.Location = new Point(txtHomePred.Width + lblHomeTeam.Width, txtHomePred.Top);
txtAwayPred.Width = 40;
lblAwayTeam.Text = dataRowAway["TeamName"].ToString();
lblAwayTeam.Location = new Point(txtHomePred.Width + lblHomeTeam.Width + txtAwayPred.Width, txtHomePred.Top + 3);
lblAwayTeam.AutoSize = true;
pnlPredCard.Controls.Add(lblHomeTeam);
pnlPredCard.Controls.Add(txtHomePred);
pnlPredCard.Controls.Add(txtAwayPred);
pnlPredCard.Controls.Add(lblAwayTeam);
So what my end goal is, is recieving the input from the user validating them and then storing them in a database.
Well, depending on how the user activates an event that requires the reading of the TextBox you have a few possible solutions.
Here is one where the TextBox (read all TextBox's) waits for enter:
private void Form_Load(object sender, EventArgs e)
{
while(someLoop)
{
TextBox theTextBox = new TextBox();
theTextBox.Name = "SomeUniqeName";//Maybe team name?
theTextBox.KeyUp += TheTextBox_KeyUp;
}
}
private void TheTextBox_KeyUp(object sender, KeyEventArgs e)
{
if ( e.KeyCode == Keys.Enter )
{
TextBox textbox = (TextBox) sender;//Get the textbox
//Just an example
listOfTeams.First( r => r.TeamName == textbox.Name )
.SomeOtherProperty = textbox.Text;
}
}
The textbox's are now identifiable by their name and all have an event. No matter how many you make.
If you will store the data later with 1 click of a button (and another loop) this solution might be better:
string[] Teams = { "teamA", "teamB", "teamC" };
private void Form1_Load(object sender, EventArgs e)
{
for ( int i = 0; i < Teams.Length; i++ )
{
TextBox theTextBox = new TextBox();
//Prefix the name so we know this is a betting textbox
//Add the 'name' (teams[i] in this case) to find it
theTextBox.Name = "ThePrefix" + Teams[i];
}
}
private void someButton_Click(object sender, EventArgs e)
{
//We want all betting textbox's here but also by team name
for ( int i = 0; i < Teams.Length; i++ )
{
//Because we set the name, we can now find it with linq
TextBox textBox = (TextBox) this.Controls.Cast<Control>()
.FirstOrDefault( row => row.Name == "ThePrefix" + Teams[i] );
}
}
This way each textbox is identifiable and won't conflict with other textbox's (because of 'ThePrefix'). This is essentially the other way around from the first method as it looks for the textbox based on data rather than data based on textbox name.
I have an application where i will need to add dynamic controls to a panel
based on the value of a number entered in a textbox.
E.g 5 means i generate 5 rows of the controls on the button click event.
The issue is that when a large number (for example 50) is entered,although
50 rows of dynamic controls are added,i am unable to scroll down to each
of the 50 rows.
private void button1_Click(object sender, EventArgs e)
{
int inputNumber = Int32.Parse(textBox1.Text);
int wid=0;
int hgt = 0;
for (int i = 1; i <= inputNumber; i++)
{
//Create a new label and text box
Label labelInput = new Label();
TextBox textBoxNewInput = new TextBox();
ComboBox cb = new ComboBox();
//Initialize label's property
labelInput.Text = "Input " + i;
labelInput.Location = new Point(30, textBox1.Bottom + (i * 30));
labelInput.AutoSize = true;
//Initialize textBoxes Property
textBoxNewInput.Location = new Point(labelInput.Width, labelInput.Top - 3);
cb.Location = new Point(textBoxNewInput.Width + labelInput.Width + 10, textBoxNewInput.Top);
hgt += textBoxNewInput.Top;
//Add the labels and text box to the form
panel1.Controls.Add(labelInput);
panel1.Controls.Add(textBoxNewInput);
panel1.Controls.Add(cb);
}
ScrollBar vScrollBar1 = new VScrollBar();
vScrollBar1.Dock = DockStyle.Right;
vScrollBar1.Scroll += (mender, f) => { panel1.VerticalScroll.Value = vScrollBar1.Value; };
panel1.Controls.Add(vScrollBar1);
Controls.Add(panel1);
}
How can i be able to scroll from row 1 to row 100 or row 500 as the case may be?
Thanks
Not sure why you're not using a grid? Manipulate the grid instead.
I did further research and i got the answer:
I removed these lines of code
ScrollBar vScrollBar1 = new VScrollBar();
vScrollBar1.Dock = DockStyle.Right;
vScrollBar1.Scroll += (mender, f) => { panel1.VerticalScroll.Value = vScrollBar1.Value; };
panel1.Controls.Add(vScrollBar1);
And i just set the autoscroll property
panel1.AutoScroll=true;
Works fine
This i a pretty basic question, but i can't find the solution anywere.
I have this code, that dynamically creates a combobox and a label when the user presses a button. My qustion is now, how can I link the combobox and the label so that the label shows what is selected in the combobox?
// Tilføjer combobox
ComboBox cboRun = new ComboBox();
cboRun.Name = "cboDynamic1" + c++;
cboRun.Location = new System.Drawing.Point(10, 10 + (20 * c));
cboRun.Size = new System.Drawing.Size(200, 25);
cboRun.BringToFront();
cboRun.Enter += CBox_Enter;
grb_MealOne.Controls.Add(cboRun);
// Tilføjer label
Label labRun = new Label();
labRun.Name = "labDynamic1" + c;
labRun.Location = new System.Drawing.Point(270, 10 + (20 * c));
labRun.Size = new System.Drawing.Size(25, 25);
labRun.BringToFront();
labRun.Text = "Neee";
grb_MealOne.Controls.Add(labRun);
i really dont have any idea on how to do this part. Have tried many different things!
Label L;
public void YourMethod()
{
//Create the `ComboBox1` and set the event `comboBox1_SelectedIndexChanged` to it
Label Y = new Label();
// ...
L = Y;
}
public void comboBox1_SelectedIndexChanged(object sender, EventArgs e)
{
L.Text = "Something else";
}
this field (L) is your Label and you can use it anywhere.