private void cmbMTNType_SelectedIndexChanged(object sender, EventArgs e) { try { cmbItem.DataSource = null; if (cmbStoreFrom.Items.Count > 0) { Store objStore = (Store)cmbStoreFrom.SelectedItem; if (cmbMTNType.SelectedItem.Equals("Material")) { cmbItem.DisplayMember = "Item"; cmbItem.ValueMember = "ItemCode"; cmbItem.DataSource = objMaterialDL.GetDataView_Store(objStore.StoreID); } else if (cmbMTNType.SelectedItem.Equals("Basic Product")) { cmbItem.DisplayMember = "Item"; cmbItem.ValueMember = "ItemCode"; cmbItem.DataSource = objBasicProductDL.GetDataView_Store(objStore.StoreID); } else if (cmbMTNType.SelectedItem.Equals("Finish Product")) { cmbItem.DisplayMember = "Item"; cmbItem.ValueMember = "ItemCode"; cmbItem.DataSource = objFinishProductDL.GetDataView_Store(objStore.StoreID); } } } catch (Exception ex) { MessageBox.Show(this, ex.Message, "Error", MessageBoxButtons.OK, MessageBoxIcon.Error); } }