C# VALIDATION USING ASCII

C# VALIDATION USING ASCII

//for ONLY NUMBERS

private void textBox1_KeyPress(object sender, KeyPressEventArgs e)
{

if ((e.KeyChar >= 48 && e.KeyChar <= 57 || e.KeyChar == 8))
{
e.Handled = false;
}
else
{
e.Handled = true;
MessageBox.Show("Please Enter a Valid Number", "Number Validation",
MessageBoxButtons.OK);
}

}
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//for ONLY CHARCTERS

private void textBox2_KeyPress(object sender, KeyPressEventArgs e)
{
if ((e.KeyChar >= 65 && e.KeyChar <= 90) || (e.KeyChar >= 97 && e.KeyChar<=122) || e.KeyChar==8)
{
e.Handled = false;
}
else
{
e.Handled = true;
MessageBox.Show("Please Enter a Character", "Number Validation",
MessageBoxButtons.OK);
}
}