private void FathernameTextBox_KeyPress(object sender, KeyPressEventArgs e)
{
if ((!char.IsControl(e.KeyChar) && !char.IsLetter(e.KeyChar)) ||
(FathernameTextBox.TextLength == 0 && char.IsLower(e.KeyChar)) ||
(FathernameTextBox.TextLength > 0 && char.IsUpper(e.KeyChar)))
{
e.Handled = true;
FathernameErrorProvider.SetError(FathernameTextBox, "введен недопустимый символ");
}
else
{
FathernameErrorProvider.Clear();
if (FathernameTextBox.BackColor == Color.IndianRed)
{
FathernameTextBox.BackColor = Color.White;
}
}
}
private void FathernameTextBox_Leave(object sender, EventArgs e)
{
FathernameErrorProvider.Clear();
}
