private void dataGridView1_DoubleClick(object sender, EventArgs e)
{
ControlUsers cu = new ControlUsers(dataGridView1.SelectedRows[0].Cells[0].Value.ToString(), this);
cu.ShowDialog();
}
private void button2_Click(object sender, EventArgs e)
{
ControlUsers cu = new ControlUsers(this);
cu.ShowDialog();
}