Published on : 2017-04-17 15:11:00

Alternatively, the SqlDataSource can be used in place of the ObjectDataSource. Refer to the Adding Validation Controls to the Editing and Inserting Interfaces and Customizing the Data Modification Interface tutorials for more information. The SqlDataSource control also provides optimistic concurrency support. Summary In order for the data Web controls to utilize their built-in inserting, editing, and deleting capabilities, the data source control they are bound to must offer such functionality. In this tutorial we examined both techniques. Scott works as an independent consultant, trainer, and writer. Also, keep in mind that for updating and deleting, the DetailsView uses the current product s DataKey value, which is only present if the DataKeyNames property is configured. If editing or deleting appears to have no effect, ensure that the DataKeyNames property is set. For example, when adding a new record we may want the QuantityPerUnit value set to TODO. Empty Then If isPageIndexChanging Then dataView. Click the ellipses in the DeleteQuery property to bring up the Command and Parameter Editor dialog box (see Figure 3). Bind data to GridView column Edit data in GridViewGridview Sorting Error: The GridView GridView1 fired event Sorting which wasn t handled. PageIndex = pageIndex End SubIn previous tutorials we learned how the ObjectDataSource control allowed for inserting, updating, and deleting of data.

As I understand it I need to capture the current gridview in a view state, and bind it again. Visit the page in a browser and note the Edit, Delete, and New buttons included in the DetailsView. In this we perform the following operations on GridView updating gridview control. Format( {0} {1} , GridViewSortExpression, GridViewSortDirection) Else dataView. Similarly, you can delete the currently selected product or add a new product to the system. Figure 5 depicts this interaction graphically. As we ll see in this tutorial, these statements can be created manually or can be automatically generated by the SqlDataSource s Configure Data Source wizard. Select the DeleteQuery property, which will bring up a set of ellipses. From the DetailsView s smart tag, check the Enable Paging option so that the user visiting this page can step through the products. Note The DetailsView s inserting and editing interfaces lack any sort of customization or validation. In that case, it shouldn t appear in the UpdateCommand. The Gridview displays at the bottom of the form, and initially displays all the data in the SQL table. From this dialog box you can specify the DELETE SQL statement and specify the parameters.

Once we add deleting support to the GridView, the GridView will automatically supply this parameter value, using the value of its DataKeys collection for the row whose Delete button was clicked. With the SqlDataSource, we need to provide INSERT, UPDATE, and DELETE SQL statements (or stored procedures) to execute. aspx, click on the ProductsDataSource SqlDataSource and then bring up the Properties window (from the View menu, choose Properties window, or simply hit F4).
. Note When adding parameters that do not have corresponding fields in the data Web control, keep in mind that these parameters values will need to be assigned values in some manner. As noted in Step 2, when automatically generating the INSERT, UPDATE, and DELETE statements, the wizard offers a Use optimistic concurrency option. Some examples are saying it need to be handled through PageIndexChanging, while others are saying do it with OnSort. Customizable appearance through themes and styles. After checking the Generate UPDATE, and DELETE statements checkbox, click OK to return to the Configure Select Statement screen, then click Next, and then Finish, to complete the Configure Data Source wizard. With the DeleteCommand property added, the GridView s smart tag now contains the Enable Deleting option. SortExpression Dim pageIndex As Integer = GridView1 updating gridview control. Recall that to support inserting, updating, and deleting, with the ObjectDataSource we needed to specify the object layer methods to invoke to perform the insert, update, or delete action. As discussed in An Overview of Inserting, Updating, and Deleting, this causes the GridView to add a CommandField with its ShowDeleteButton property set to true. .

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