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Only allow numbers in textbox

// This can be expanded to limit the key pressed to whatever you want
//In this scenario it only allows digits

   1  
   2   void textBox_KeyPress(object sender, KeyPressEventArgs e)
   3  {
   4  e.Handled = !(Char.IsDigit(e.KeyChar) || e.KeyChar == '\b');
   5  }
to code Net source microsoft by dubby on Jul 02, 2008
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