private void Keypad_Btn_Click(object sender, EventArgs e)
{
string buttonText = ((Button)sender).Text;
if (buttonText == "Delete")
{
LoginBox.Text = LoginBox.Text.Substring(0, (LoginBox.TextLength - 1));
}
else
{
LoginBox.AppendText(buttonText);
if (LoginBox.TextLength == MaxValue)
{
LoginEmployee();
}
}
}