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With the Sql Data Source control's , and so forth). If you are configuring this information via the Update Query property from the Properties window, then your screen should look like the following: Select Command="SELECT [Product ID], [Product Name], [Products].[Category ID], [Category Name], [Unit Price], [Discontinued] FROM [Products] INNER JOIN [Categories] ON [Products].[Category ID] = [Categories].[Category ID] ORDER BY [Product Name]" Update Command="UPDATE [Products] SET [Product Name] = @Product Name, [Category ID] = @Category ID, [Unit Price] = @Unit Price, [Discontinued] = @Discontinued WHERE [Product ID] = @Product ID" Note that each parameter in the Update Parameters collection is a Parameter object.
Recall that when using manually-created Web Forms in the inserting and deleting scenarios, we would use Control Parameter objects that referenced the particular Web control that held the parameter's value.
The Command Field is a column that shows Edit-related or Delete-related buttons, depending on its property settings.
For example, to let a visitor edit a database record you first need to let them choose which record to edit.
The Edit button disappears and in its place Update and Cancel buttons appear.
Furthermore, the columns in the Grid View become editable, too.
If the Cancel button is clicked, the row reverts to its pre-editing interface and any changes are not saved.
If the Update button is clicked, the Sql Data Source's updating workflow begins, thereby updating the database with the user's changes.
In this article we will look at using the Grid View control to update data, although the Data List, Details View, and Form View controls are also suitable choices.