private void btnOk_Click(object sender, EventArgs e)
{
Users.UsersSoapClient client = new Users.UsersSoapClient();
m_Role = client.Check(edtLogin.Text, edtPass.Text);
if (m_Role == "invalid")
MessageBox.Show("Invalid login or password", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
else
Close();
}
