Retrieving Data with AJAX and the GridView Control - Displaying and Updating the Data
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Now that your SqlDataSource object is ready to go, you only have to set up your GridView control. In Design view, click on the GridView Smart Tag and choose “Edit Columns.” Verify that the checkboxes to enable editing and deleting are selected, as shown in Figure 4-17.
If you prefer to have buttons for Edit and Delete, rather than links, click on the Smart Tag and select “Edit Columns....” When the Fields dialog box opens, click the Command Field entry in the Selected Fields area (lower-left corner). This brings up the Command Field Properties in the right-hand window. In the Appearance section of the Fields editor, choose ButtonType and then change Link to Button in the drop-down menu next to ButtonType, as shown in Figure 4-18.
The result is that the commands (Edit and Delete) are shown as buttons, as shown in Figure 4-19.
Figure 4-17. Select the Smart Tag on the GridView, and check the boxes to enable editing and deleting.
Figure 4-18. Click the Smart Tag of the GridView, then click Edit Columns to get this Fields dialog box where you can select and edit the columns in the GridView. Here, the CommandField button type is being changed.
Figure 4-19. You can change the Edit and Delete links in the GridView to buttons, if you prefer.
Please check back next week for the continuation of this article.
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 This article is excerpted from chapter four of Learning ASP.NET 2.0 with AJAX: A Practical Hands-on Guide, written by Jesse Liberty, Dan Hurwitz and Brian MacDonald (O'Reilly, 2007; ISBN: 0596513976). Check it out today at your favorite bookstore. Buy this book now.
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