Disable Tab Key

[Gene Vital]

C#

I am trying to figure out how to disable the Tab key in a TextBox.I need
to prevent the user from leaving the TextBox unless the data was entered
correctly, any pointers?

 

[Guest]

Hi Gene,
you can derive your own textbox class from the
System.Windows.Forms.TextBox and then override the ProcessCmdKey method to
not allow the user to tab away from the control

For example:

class MyTextBox : TextBox
{
public MyTextBox() : base()
{
}

protected override bool ProcessCmdKey(ref Message msg, Keys keyData)
{
if(keyData == Keys.Tab)
{
//do
nothing, so return true;
return true;
}

return base.ProcessCmdKey (ref msg, keyData);
}

}

Hope that helps
Mark R Dawson

 

[Bruce Wood]

You don't want to disable the Tab key. You want to look into the
Validating event, and the CausesValidation property. The following
article is probably overkill for what you want, but the first couple of
pages should give you the general idea:

http://msdn.microsoft.com/library/default.asp?url=/library/en-us/dnforms/html/winforms03162004.asp

 

[Eugene Vtial]

C#

I am trying to figure out how to disable the Tab key in a TextBox.I need
to prevent the user from leaving the TextBox unless the data was entered
correctly, any pointers?

Thank you both....