private void tsbedit_Click(object sender, EventArgs e)
        {
            if (gridView1.RowCount > 0)
            {
                string guid = ((DataRowView)(gridView1.GetFocusedRow())).Row[0].ToString();


                frmFileInStorageAdd frmFileInStorageAdd = new frmFileInStorageAdd();
                frmFileInStorageAdd.EditBill(guid);
            }
        }
        private void btnAdd_Click(object sender, EventArgs e)
        {
            frmFileInStorageAdd frmFileInStorageAdd = new frmFileInStorageAdd();

            frmFileInStorageAdd.AddBill();
        }