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This is because we didn’t binded our grid to a valid and well defined Data Source.Because of this, we have our edit controls in read only state.As first we will add a couple of new methods in our Data Service class.We will write down methods that will allow us to update, add and remove the credit card entities.In this example, I am going to retrieve values from categories table of Northwind database. Drag a Grid View into the Web Form and assign Data Key Names property with the primary key column i.e. In the gdview_Row Editing and gdview_Row Deleting event, we have used the below code to retrieve categoryid from datakey of Grid View, int catid = int. In this post we will continue adding functionality on our previous example.

Still there are a couple of tricks that we will see in the following lines.In order to start editing a certain row, we can choose the way we are going to start this action.At example you can add a Command Button in the grid itself or simply start editing let’s say on a row double click.For this situation, many developers use invisible columns (Hidden columns) in the gridview to identify that row. We can achieve the same functionality using Datakeys.

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