Numeric TextBox

Question

Im new to programming and I dont know very much about but I\'m making a calculator, and i want to use a textbox that only acepts numbers and decimals, and when the user past

Answer 1

Add an event handler for the textbox you want to be numeric only, and add the following code:

private void textBoxNumbersOnly_KeyPress(object sender, KeyPressEventArgs e)
{
   if (Char.IsDigit(e.KeyChar) || e.KeyChar == '\b')
   {
      e.Handled = false;
   }
   else
   {
      e.Handled = true;
   }
}

This allows for numbers 0 to 9, and also backspaces (useful IMHO). Allow through the '.' character if you want to support decimals