private void BindSubCategoryDropdown(string cat) { DataSet dsLookupData = commisionReceivableBo.GetSubCategories(cat); //Populating the categories dropdown DataRow drProduct = dsLookupData.Tables[0].NewRow(); drProduct["PAISC_AssetInstrumentSubCategoryCode"] = "All"; drProduct["PAISC_AssetInstrumentSubCategoryName"] = "All"; dsLookupData.Tables[0].Rows.InsertAt(drProduct, 0); ddSubCategory.DataSource = dsLookupData.Tables[0]; ddSubCategory.DataValueField = dsLookupData.Tables[0].Columns["PAISC_AssetInstrumentSubCategoryCode"].ToString(); ddSubCategory.DataTextField = dsLookupData.Tables[0].Columns["PAISC_AssetInstrumentSubCategoryName"].ToString(); ddSubCategory.DataBind(); }