KeyPress in IntegerTextBox

[Paul]

I want to make an IntegerTextBox read only. But using the ReadOnly property disables all the nice color coding (Red for negative) I like.
So I want to keep it ReadOnly = false, and ignore keystrokes.

I tried to install a KeyPress handler, but it looks like NumberTextBoxBase ignores the e.Handled = true returned from my handler. How can I achieve this?

[Administrator]

Hi Paul,

IntegerTextBox handles the keyboard input in it''s OnKeyPress method. So you''ll want to extend IntegerTextBox and override OnKeyPress as demonstrated by the following code snippet:

public class ReadOnlyIntegerTextBox : IntegerTextBox
{
public ReadOnlyIntegerTextBox() : base()
{
}

protected override void OnKeyPress(KeyPressEventArgs e)
{
return;
}
}

This will prevent OnKeyPress from doing anything. Please let me know if you have any further questions on this subject.

Regards,
Gregory Austin
Syncfusion Inc.

[Paul]

I did what you said.
My OnKeyPress does get called, but the problem is
the caller, NumberTextBoxBase:ProcessKeyEventArgs does not alter his behavior in any way, based on the outcome of OnKeyPress. The callback is just an aside, not a participant in outcome determination.

[Administrator]

Hi Paul,

May be overriding the ProcessCmdKey without calling the base class and returning true will give you the result you''re are looking for.

Regards,
Thomas