Displaying Column Summaries
Imagine that you want to display a column total at the bottom of a column. In that case, you can handle the GridView RowDataBound event to sum the values in a column and display the summary in the column footer.
For example, the page in Listing 11.29 contains a GridView control that displays a summary column representing the total box office sales of all movies (see Figure 11.21).
Figure 11.21. Displaying a column summary.
Listing 11.29. SummaryColumn.aspx
The GridView control uses a TemplateField to represent the ...
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