private void clientGridView_CellDoubleClick(object sender, DataGridViewCellEventArgs e)
        {
            UserForm userForm = new UserForm(clientGridView.Rows[e.RowIndex].Cells[0].Value.ToString());

            userForm.ShowDialog();
        }
        private void user_add_btn_Click(object sender, EventArgs e)
        {
            UserForm userForm = new UserForm();

            userForm.ShowDialog();
        }