AutoValidate a Textbox

[Gene Vital]

Hey all,

I am looking for a way to have a textbox autovalidate once the number
of characters entered is == MaxLength. As it is now you have to hit tab
to go to the next control.

 

[Cor Ligthert [MVP]]

Gene,

You can use the keyup event and the focus for what you want.

http://msdn.microsoft.com/library/d...fsystemwindowsformscontrolclassfocustopic.asp

I hope this helps,

Cor

 

[Eugene Vtial]

Gene,

You can use the keyup event and the focus for what you want.

http://msdn.microsoft.com/library/d...fsystemwindowsformscontrolclassfocustopic.asp

I hope this helps,

I would have to know what the next control that would need to receive
the focus is though.

It seems this is pretty normal behavior, isn't there something more
built into the framework than that?

 

[Chris Jobson]

I would have to know what the next control that would need to receive
the focus is though.

Look at the Form.GetNextControl method for this.
Chris Jobson

 

[Gene Vital]

Look at the Form.GetNextControl method for this.
Chris Jobson

Ok, I have... how do I reference the current form that the control is on?

If it were a Container Control I could use the ParentForm propert.

 

[Chris Jobson]

Ok, I have... how do I reference the current form that the control is on?

Control.FindForm() - though if you're doing this logic in the in the
TextBox's KeyUp event then the event handler is normally a member of the
Form class containing the TextBox, so you can just call GetNextControl (or
use "this.GetNextControl" if you want to be more explicit).

Chris Jobson

 

[Gene Vital]

Control.FindForm() - though if you're doing this logic in the in the
TextBox's KeyUp event then the event handler is normally a member of the
Form class containing the TextBox, so you can just call GetNextControl (or
use "this.GetNextControl" if you want to be more explicit).

I found a much simpler way to achieve what I needed

if ( this.SelectionStart == this.MaxLength && this.Text.Length ==
..MaxLength)
this.Parent.SelectNextControl(this, true, false, true, true);


thanks for all the good tips though