Numeric textbox (accepts only numbers and shows a warning popup when invalid)

Author: Miroslav Stampar

URL: http://mstampar.awardspace.com/

// Numeric textbox (accepts only numbers and shows a
// warning popup when invalid)

public class NumericTextbox : TextBox
{
  protected override CreateParams CreateParams  {
  get
     {
        CreateParams cp = base.CreateParams;
        cp.Style |= 0x2000; // ES_NUMBER
        return cp;
      }
  }
}