private void btnUpd_Click(object sender, EventArgs e)
 {
     try
     {
         ADD_CLIENT frm = new ADD_CLIENT();
         frm.ID                    = Convert.ToInt32(dgvClient.CurrentRow.Cells[0].Value.ToString());
         frm.txtName.Text          = this.dgvClient.CurrentRow.Cells[1].Value.ToString();
         frm.txtPrn.Text           = this.dgvClient.CurrentRow.Cells[2].Value.ToString();
         frm.txtTele.Text          = this.dgvClient.CurrentRow.Cells[3].Value.ToString();
         frm.txtEmail.Text         = this.dgvClient.CurrentRow.Cells[4].Value.ToString();
         frm.cbCity.Text           = this.dgvClient.CurrentRow.Cells[5].Value.ToString();
         frm.labelAdd_Produit.Text = "Mise à Jour du Client : " + this.dgvClient.CurrentRow.Cells[1].Value.ToString() + "  " + this.dgvClient.CurrentRow.Cells[2].Value.ToString();
         frm.btnAdd.Text           = "Mise à Jour";
         frm.state                 = "Update";
         byte[]       image = (byte[])cli.GET_IMG_CLIENT(Convert.ToInt32(this.dgvClient.CurrentRow.Cells[0].Value.ToString())).Rows[0][0];
         MemoryStream ms    = new MemoryStream(image);
         frm.pbImg.Image = Image.FromStream(ms);
         frm.ShowDialog();
     }
     catch (Exception ex)
     {
         MessageBox.Show(ex.Message);
     }
 }
        private void btnAjouter_Click(object sender, EventArgs e)
        {
            ADD_CLIENT ac = new ADD_CLIENT();

            ac.ShowDialog();
        }