Re: Event to return value

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From: William Ryan eMVP (dotnetguru_at_comcast.nospam.net)
Date: 07/09/04 

Date: Fri, 9 Jul 2004 17:14:39 -0400

If you need to have everything capitalized then setting the CharacterCasing
is the way to go . I agree with you though about the positioning. 

-- 
W.G. Ryan, eMVP
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"Ken Kolda" <ken.kolda@elliemae-nospamplease.com> wrote in message
news:%237eQP2dZEHA.4032@TK2MSFTNGP11.phx.gbl...
> See comments inline...
>
> > private void textBox1_KeyPress(object sender,
> > System.Windows.Forms.KeyPressEventArgs e)
> >
> > {
> >
> > e.Handled = true;
> >
> > ((TextBox)sender).Text += e.KeyChar.ToString().ToUpper();
> >
> > }
>
> The event handler code above isn't sufficient because you don't know that
> when the user pressed the key that the cursor is at the end of the
textbox.
> You'll need to use the SelectionStart and SelectionLength properties to
> ensure that your character is placed in the correct location (and whatever
> text was selected is removed), e.g.
>
> public static void uCaseReturn(object sender,
> System.Windows.Forms.KeyPressEventArgs e)
> {
>     if (!Char.IsControl(e.KeyChar))
>     {
>         TextBox tb = (TextBox) sender;
>         int charPosition = tb.SelectionStart;
>
>         // Build the new text for the box by replacing the selected text
> with the character (in uppercase)
>         tb.Text = tb.Text.Substring(0, charPosition) +
>             Char.ToUpper(e.KeyChar) +
>             tb.Text.Substring(tb.SelectionStart + tb.SelectionLength);
>
>         // Place the cursor in the correct location
>         tb.SelectionLength = 0;
>         tb.SelectionStart = charPosition;
>
>         // Mark the keystroke as being handled
>         e.Handled = true;
>     }
> }
>
> Ken
>
>

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