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How can I create big empty white box and write some text in the middle of it?

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
namespace MyTest
{
public partial class Form1 : Form
{
private int x, y;
private int gap = 0;
private int startingY = 150;
private GroupBox lastGB = null;
public Form1()
{
InitializeComponent();
GroupBox gb = new GroupBox();
gb.Location = new Point(100, (lastGB == null ? startingY : lastGB.Bounds.Bottom));
gb.Size = new Size(1220, 400);
gb.BackColor = SystemColors.Window;
gb.Text = "";
gb.Font = new Font("Colonna MT", 12);
this.Controls.Add(gb);
}
It's creating a small line on the top of the groupbox and I don't want this line to show.
And I want to write some text on it in the middle of it.
How can I make it just complete white ? And how to write some text in the middle on the groupbox ?
The main idea is to create over the form a white sheet or box with text inside that's it.

It looks like your intention is to put subsequent boxes just below the last box. As mentioned, a Label would probably be best. I'd also move that code to a method you can call over and over to keep from repeating code elsewhere. You could pass a message to display in the Label. Also, don't forget to update the reference to the "last box" when ever you create a new one:
public partial class Form1 : Form
{
private int x, y;
private int gap = 0;
private int startingY = 150;
private Label lastLbl = null;
public Form1()
{
InitializeComponent();
AddLabel("Hello World");
}
private void button1_Click(object sender, EventArgs e)
{
AddLabel(DateTime.Now.ToString());
}
private void AddLabel(String msg)
{
Label lbl = new Label();
lbl.Location = new Point(100, (lastLbl == null ? startingY : lastLbl.Bounds.Bottom));
lbl.Size = new Size(1220, 400);
lbl.BackColor = Color.White;
lbl.Text = msg;
lbl.TextAlign = ContentAlignment.MiddleCenter;
lbl.Font = new Font("Colonna MT", 12);
this.Controls.Add(lbl);
lastLbl = lbl;
}
}

How can i count the number of keypress in the background in C#

I am using C# and .NET 4 to make a little program for my friend. I am a bengineer in coding.
I want to count the number of pressing X and Y on the keyboard. I managed to make it running in the background, but i have problem with counting. I tried searching for functions that may help me, but i didn't find anyting.
The program now running and if X or Y is pressed down, the counter just spinning.
Here's what i have:
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;
using System.Threading;
using System.Windows.Input;
namespace gombszamlalo
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
bool fut = true;
private void Form1_Load(object sender, EventArgs e)
{
Thread TH = new Thread(billentyuzet);
CheckForIllegalCrossThreadCalls = false;
TH.SetApartmentState(ApartmentState.STA);
TH.Start();
}
public int x = 0;
public int y = 0;
void billentyuzet()
{
while (fut)
{
if ((Keyboard.GetKeyStates(Key.X) & KeyStates.Down) > 0)
{
x++;
label4.Text = x.ToString();
}
if ((Keyboard.GetKeyStates(Key.Y) & KeyStates.Down) > 0)
{
y++;
label5.Text = y.ToString();
}
if ((Keyboard.GetKeyStates(Key.F6) & KeyStates.Down) > 0)
{
fut = false;
}
}
}
I would be very happy, if somebody can help me to fix this code. Thank you very much!

Try this Global Mouse and Keyboard Library
I believe it contains all you need.

For counting Keypresses on Background you need Keyboard Hook. Have a look at these link:
https://www.codeproject.com/Articles/19004/A-Simple-C-Global-Low-Level-Keyboard-Hook
C# : Keyboard Hook

concatenate Rectangle control name for shape in c#

This is in WinForms. and i am using microsoft.vsualbasic.powerpacks
how can i concatenate Rectangle control name in c# this is what i have so far
string n = "1";
Rectangle match = this.Controls.Find("rectangleShape" + n,true)[0] as Rectangle;
match.BackColor = Color.Red;

Try some of the solutions
here... – Idle_Mind
okay will do try – droid fiji
it didnt really help :( – droid fiji
Here's a working example based on the solution I linked to in the comments. Note that the BackStyle property of your RectangleShape needs to be Opaque for you to see the color you set!
This code will set the BackColor of rectangeShape1 thru rectangeShape3 to Red:
using Microsoft.VisualBasic.PowerPacks;
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.IO;
using System.Linq;
using System.Runtime.InteropServices;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
namespace WindowsFormsApp1
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
private void button1_Click(object sender, EventArgs e)
{
string rectName;
string rectBaseName = "rectangleShape";
var shapeContainer = this.Controls.OfType<ShapeContainer>().FirstOrDefault();
if (shapeContainer != null)
{
for (int i = 1; i <= 3; i++)
{
rectName = rectBaseName + i.ToString();
RectangleShape match = shapeContainer.Shapes.OfType<RectangleShape>().FirstOrDefault(o => o.Name == rectName);
if (match != null)
{
match.BackColor = Color.Red;
match.BackStyle = BackStyle.Opaque;
}
}
}
}
}
}

Edit the background of a button in c#

I have a little problem of mine to solve. I have a button which has an image background.I tried to color the whole button but the image can not be seen after coloring the whole button. How can I edit this "imagebutton" like in this example? http://i.stack.imgur.com/XaQQQ.png
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 bura
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
private void button2_Click(object sender, EventArgs e)
{
if (button2.BackgroundImage != null)
{
button2.BackgroundImage = null;
button2.BackColor = Color.Black;
}
else {
button2.BackgroundImageLayout = ImageLayout.Stretch;
button2.BackgroundImage = Image.FromFile("C:\\Users\\rati\\Desktop\\ks.png");
}
}
private void button3_Click(object sender, EventArgs e)
{
button2.BackgroundImageLayout = ImageLayout.Stretch;
button2.BackgroundImage = Image.FromFile("C:\\Users\\rati\\Desktop\\ks.png");
}
}
}
This

Just made a button by using the designer with the following code:
this.button1.BackColor = System.Drawing.Color.DodgerBlue;
this.button1.BackgroundImage = global::WindowsFormsApplication.Properties.Resources.ChargeImage;
this.button1.BackgroundImageLayout = System.Windows.Forms.ImageLayout.Zoom;
this.button1.Image = global::WindowsFormsApplication.Properties.Resources.DatabaseImage;
this.button1.Location = new System.Drawing.Point(12, 12);
this.button1.Name = "button1";
this.button1.Size = new System.Drawing.Size(264, 160);
this.button1.TabIndex = 0;
this.button1.UseVisualStyleBackColor = false;
And that is the result:
So what is your problem?

You can edit your pictures with a method like this:
private static void DrawLinesOnBitmap(Bitmap bmp)
{
using (var p = new Pen(Color.Black, 5))
{
using (var g = Graphics.FromImage(bmp))
{
g.DrawLine(p, 0, 0, bmp.Width, bmp.Height);
}
}
}
This method adds a line from the left top corner to the right bottom corner. Just draw some more lines and you should get your wanted result.

C# ColorLine not showing up in TChart

I currently have an TChart where I want to introduce a draggable horizontal line which changes the color of the points below the line. I have chosen to use ColorLine for this purpose but the line does not appear in the TChart. Am I using the right TChart tool for the job or am I missing something?
Below is the stripped down version of my current code.
public class testClass
{
private ColorLine line;
private double lineYVal = 5;
private TChart savedChart;
public testClass()
{
line = new Colorline();
line.AllowDrag = true;
line.Pen.Color = Color.Red;
line.EndDragLine += lineDragHandler;
}
public void foo(TChart chart) //chart is prepopulated with datapoints from 0->10
{
savedChart = chart;
//existing code which assigns colors
chart.Series[0].ColorRange(chart.Series[0].YValues, double.MinValue, lineYVal, Color.Red);
chart.Series[0].ColorRange(chart.Series[0].YValues, lineYVal, double.MaxValue, Color.Blue);
//my attempt to add a line
chart.Tools.Add(line);
line.Active = true;
line.Axis = chart.Axes.Left;
line.Value = lineYVal;
}
private void lineDragHandler(object sender)
{
lineYVal = line.Value;
savedChart.Tools.Clear(); //remove existing line from chart
foo(savedChart); //redo colors and re-add line
}
}

Code below works fine for me here. If your problem persists please send a Short, Self Contained, Correct (Compilable), Example project to reproduce the problem here. You can post your files at www.steema.net/upload.
using Steema.TeeChart;
using Steema.TeeChart.Styles;
using Steema.TeeChart.Tools;
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 WindowsFormsApplication1
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
InitializeChart();
}
private void InitializeChart()
{
testClass();
//existing code which assigns colors
tChart1.Series.Add(new Steema.TeeChart.Styles.Bar()).FillSampleValues();
tChart1.Series[0].ColorRange(tChart1.Series[0].YValues, double.MinValue, lineYVal, Color.Red);
tChart1.Series[0].ColorRange(tChart1.Series[0].YValues, lineYVal, double.MaxValue, Color.Blue);
//my attempt to add a line
tChart1.Tools.Add(line);
line.Active = true;
line.Axis = tChart1.Axes.Left;
line.Value = lineYVal;
}
private ColorLine line;
private double lineYVal = 5;
private TChart savedChart;
public void testClass()
{
line = new ColorLine();
line.AllowDrag = true;
line.Pen.Color = Color.Red;
line.EndDragLine += lineDragHandler;
}
public void foo(TChart chart) //chart is prepopulated with datapoints from 0->10
{
savedChart = chart;
//existing code which assigns colors
chart.Series[0].ColorRange(chart.Series[0].YValues, double.MinValue, lineYVal, Color.Red);
chart.Series[0].ColorRange(chart.Series[0].YValues, lineYVal, double.MaxValue, Color.Blue);
//my attempt to add a line
chart.Tools.Add(line);
line.Active = true;
line.Axis = chart.Axes.Left;
line.Value = lineYVal;
}
private void lineDragHandler(object sender)
{
lineYVal = line.Value;
if (savedChart != null)
{
savedChart.Tools.Clear(); //remove existing line from chart
foo(savedChart); //redo colors and re-add line
}
else
{
foo(tChart1);
}
}
}
}

It turns out that while the line was being added correctly, the code I was using to display the chart was not updating the chart properly and was displaying a version of the chart from before it was passed into my highlight function.