Because of its simplicity, flexibility and many possible uses, the
DataGrid class is one of the most well known and used classes of the .NET framework. The use of the
ItemDataBound event introduces a whole new world of possibilities, letting you conditionally modify displayed data, format, as well as insert some client side code for any cell in your
DataGrid. The use of this event can sometimes be a smart alternative to adding calculated columns to a dataset.
The source code available for this tutorial is a working example of what you can do with the
ItemDataBound event; a
DataGrid displays customer information, a balance value is displayed in red if its value is negative. For the sake of this tutorial, we'll pretend that Jamaica has invaded the North American continent, so North American countries are displayed as "Jamaica" with the insertion of client side code to create a hyperlink and map this link's
DataGrid and a form letting the user view complete details of the customer in the popup window.
ItemDataBound event happens once for every row, after the data is bound to the
DataGrid and before the page is rendered to the client.
Using the code
Points of Interest
ItemCreated event is a close sibling of
ItemDataBound. This event happens before
ItemDataBound, when the row is created but does not yet contain any data, so you can't use it to read or modify data.
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