Question

I have 20 TextBoxes in a form. And I have a Common KeyPress Event for all of that Textboxes.

So I try to declare the keypress event like the following manner… is it possible?

for (int Cnl = 1; Cnl < 21; Cnl++)
{
   ((RichTextBox)Cnl).KeyPress += new KeyPressEventHandler(this.Comn_KeyPress);
}

Answer 1

Correct idea; but casting an int to a RichTextBox will never work. Try this:

 foreach (var control in this.Controls)
 {
     var text = control as RichTextBox;
     if (text != null)
          text.KeyPress += new KeyPressEventHandler(this.Comn_KeyPress);
 }