private void Btn_PurchaseList_Click(object sender, EventArgs e)
 {
     Form_PurchaseList P = new Form_PurchaseList();
     P.ShowDialog();
 }
 /// <summary>
 /// ایونت دابل کلیک گرید
 /// </summary>
 /// <param name="sender"></param>
 /// <param name="e"></param>
 private void GridListP_DoubleClick(object sender, DataGridViewCellMouseEventArgs e)
 {
     if (e.RowIndex != -1)
     {
         int PurchaseListID = Convert.ToInt32(GridListPurchace.Rows[e.RowIndex].Cells["PurchaseListID"].Value);
         Form_PurchaseList FP = new Form_PurchaseList(PurchaseListID, 1);
         FP.ShowDialog();
         ShowPurchaseLists();
     }
 }