private void textBox4_KeyPress(object sender, KeyPressEventArgs e)
{
ClassNumbersOnly classnumbers = new ClassNumbersOnly();
classnumbers.UserNumbersOnly(e);
}
private void textBox5_KeyPress(object sender, KeyPressEventArgs e)
{
ClassNumbersOnly ccc = new ClassNumbersOnly();
ccc.UserNumbersOnly(e);
}
private void textBox1_KeyPress(object sender, KeyPressEventArgs e)
{
ClassNumbersOnly ClassChar = new ClassNumbersOnly();
ClassChar.UserCharsOnly(e);
}