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Silverlight Upper-Case TextBox(janrep.blog.codeplant.net)

submitted by janrepjanrep(365) 3 years, 2 months ago

Silverlight TextBox does not implement CharacterCasing property , but with simple KeyDown handling code we can implement similar functionality and we can create TextBox that works in upper-case mode.

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janrepjanrep(365)
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posted by mikewmikew(0) 2 years, 2 months ago 0

Thanks for the starter on this. A slightly better version that takes into account selected text that you overwrite by typing.

if (!(sender is TextBox)) return;

//do not handle ModifierKeys
if (Keyboard.Modifiers != ModifierKeys.None) return;
if ((e.Key < Key.A) || (e.Key > Key.Z)) return;

TextBox tb = (TextBox)sender;

string s = new string(new char[] { (char)e.PlatformKeyCode });
int selstart = tb.SelectionStart;
tb.Text = tb.Text.Remove(selstart, tb.SelectionLength);
tb.Text = tb.Text.Insert(selstart, s);
tb.Select(selstart + 1, 0);
e.Handled = true;

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