Number only text box

have a look at
http://www.codeproject.com/vb/net/validtext3.asp
http://www.thecodeproject.com/vb/net/CpFlexMaskEditBox.asp

Hi,

You can try NumericUpDown control.

Gena

using System;
using System.Windows.Forms;
using System.ComponentModel;
using System.Drawing;

class TextBoxDemo:Form
{
  public TextBoxDemo()
  {
    NumberBox n1=new NumberBox();
    n1.TabIndex=0;
    Button b1=new Button();
    n1.Location=new Point(10,10);
    b1.Location=new Point(n1.Left+n1.Width+20,10);
    b1.Size=new Size(150,24);
    b1.Text="Wanna Give me Focus";    
    this.Controls.Add(n1);
    this.Controls.Add(b1);
  }
  public static void Main()
  {
    Application.Run(new TextBoxDemo());
  }
}

class NumberBox:TextBox
{
  public NumberBox()
  {
    this.CausesValidation=true;
    this.Validating+=new CancelEventHandler(TextBox_Validation);
  }

  private void TextBox_Validation(object sender,CancelEventArgs ce)
  {
    try
    {
      int value=Int32.Parse(this.Text);
    }
    catch(Exception)
    {
      ce.Cancel=true;
      MessageBox.Show("Please Enter Numeric Value");
    }
  }
}



See this
http://www.c-sharpcorner.com/Language/VisualInterfaceInCSPSD.asp

I guess a Regular Expression Validator is the simplest one

This is a old question, which I already anwser for another member:
https://www.experts-exchange.com/questions/21261213/TextBox-with-numeric-input-only.html

hehe, that "other member" is me.  just wanted to see if there was a more .NET specific way to do it.  

Mohammed, what about the delete button?

jjacksn
Delete button should work fine without problem, because I use KeyPress Event, I added (ascii = 8) for backspace button, so it should work fine too

Isn't delete a different ascii code than backspace?

yes

KeyPress event use Ascii code for the keys, therefore it can't see the Delete button, because that I add only Backspace(ASCII =8)

if you would like to override the Delete button, you have to use KeyDown or KeyUp and use the Keycode of the keys instead of ASCII

Hope it's more clear now

Regards,
Mohammed