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If you need to brush up on implementing these features within the Grid View, Details View, and Form View, return to the Editing, Inserting, and Deleting Data tutorials, starting with An Overview of Inserting, Updating, and Deleting.

collection and can include hard-coded values, common parameter source values (querystring fields, session variables, Web control values, and so on), or can be programmatically assigned.

Figure 2: Select the Delete Query Property from the Properties Window provide a value for this parameter (leave its Parameter source at None ).

Once we add deleting support to the Grid View, the Grid View will automatically supply this parameter value, using the value of its property added, the Grid View s smart tag now contains the Enable Deleting option. As discussed in An Overview of Inserting, Updating, and Deleting, this causes the Grid View to add a Command Field with its .

Our goal is to extend this example to allow for the user to delete products via the Grid View.

In previous tutorials we learned how the Object Data Source control allowed for inserting, updating, and deleting of data.

The Sql Data Source control supports the same operations, but the approach is different, and this tutorial shows how to configure the Sql Data Source to insert, update, and delete data.

When the Sql Data Source control s method is invoked either programmatically or automatically from a data Web control a connection to the database is established, the parameter values are assigned to the query, and the command is shuttled off to the database.

The results are then returned as either a Data Set or Data Reader, depending on the value of the control s value has been specified, the Enable Inserting, Enable Editing, or Enable Deleting option in the corresponding data Web control s smart tag will become available.

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