Thread: Problem with keyboard control in C#
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Join Date: Feb 2008
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Clawsy Clawsy is offline Offline
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Problem with keyboard control in C#

 
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  #1
Oct 19th, 2008
Hello,
Recently I needed to assign keyboard control to my program; so and I searched the Internet, I found many examples but it seems all have one little problem(or it's my mistake?):
I use this test code:

C# Syntax (Toggle Plain Text) 
  1. using System;
  2. using System.Collections.Generic;
  3. using System.ComponentModel;
  4. using System.Data;
  5. using System.Drawing;
  6. using System.Linq;
  7. using System.Text;
  8. using System.Windows.Forms;
  9.  
  10. namespace myheys
  11. {
  12.     public partial class Form1 : Form
  13.     {
  14.         public Form1()
  15.         {
  16.             InitializeComponent();
  17.  
  18.         }
  19.  
  20.  
  21.  
  22.         private void Form1_Load(object sender, EventArgs e)
  23.         {
  24.             this.KeyUp += new KeyEventHandler(button1_KeyDown);
  25.         }
  26.  
  27.  
  28.  
  29.         private void button1_KeyDown(object sender, KeyEventArgs e)
  30.         {
  31.             switch ((int)e.KeyValue)
  32.             {
  33.                 case (int)Keys.Space: MessageBox.Show("SPACE"); break;
  34.                 case (int)Keys.Escape: MessageBox.Show("ESC"); break;
  35.                 case (int)Keys.Enter: MessageBox.Show("ENTER"); break;
  36.                 case (int)Keys.Delete: MessageBox.Show("del"); break;
  37.  
  38.                 case (int)Keys.Up: MessageBox.Show("up"); break;
  39.                 case (int)Keys.Down: MessageBox.Show("down"); break;
  40.  
  41.                 case (int)Keys.Left: MessageBox.Show("left"); break;
  42.                 case (int)Keys.Right: MessageBox.Show("right"); break;
  43.  
  44.                 case (int)Keys.F10: MessageBox.Show("F10"); break;
  45.  
  46.                 case (int)Keys.F: MessageBox.Show("f"); break;
  47.  
  48.             }
  49.         }
  50.     }
  51. }

Keyboard control works fine but not for all key: Enter, Up, Down, Right, Left -> these are not working. . I don't understand why, because these controls are defined in c# like the others. If you have an idea, please post it. Thanks
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