Textbox only accepting numbers in C# windows application.

The following piece of code can be used in textbox keypress event to restrict user to enter only numbers.

private void txtZip_KeyPress(object sender, KeyPressEventArgs e)
{
if (char.IsDigit(e.KeyChar) || char.IsControl(e.KeyChar))
{
e.Handled = false;
}
else
{
e.Handled = true;
}
}