Asp net rowupdating findcontrol
Updating an existing record s associated binary data provides some interesting challenges.The remainder of this tutorial delves into adding update capabilities to the brochure and picture.This will add a Command Field to the Grid View whose , so you will get a foreign key constraint violation exception if you attempt to delete any of the first eight categories.To test this functionality out, add a new category, providing both a brochure and picture.This would require an extra trip to the database to bring back the picture data for the record being edited. Choose No, because choosing Yes will overwrite any field customizations you may have made.
As discussed in the An Overview of Inserting, Updating, and Deleting Data tutorial, the Grid View offers built-in row-level editing support that can be implemented by the tick of a checkbox if its underlying data source is appropriately configured.
When editing a category, the user will be able to optionally upload a new picture or have the category continue to use the existing one. In this tutorial we will extend the Grid View to include editing and deleting support.
For the brochure, they can either choose to use the existing brochure, to upload a new brochure, or to indicate that the category no longer has a brochure associated with it. The DAL has auto-generated s header and choose Add Query from the context menu to launche the Table Adapter Query Configuration Wizard. Rather than continuing to work from page from the previous tutorial.
My test category, shown in Figure 6, includes a test brochure file named and a test picture.
Figure 7 shows the Grid View after the test category has been added.