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Asked: 2026-05-11T16:31:05+00:00

This is a more direct question stemming from an earlier more general question i

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This is a more direct question stemming from an earlier more general question i had earlier now that I’ve spend more time looking into ADO.NET

I want to take an ADO.NET DataTable and perform the equivalent of a SQL SELECT query with aggregate functions (such as SUM) on some columns, and GROUP BY set for the remaining columns. I then want to take the result and display it in a DataGrid.

I understand that I can create a DataView of a DataTable that contains filter criteria and aggregate functions. But the MSDN page on Expressions say that

“If you use a single table to create an aggregate, there would be no group-by functionality. Instead, all rows would display the same value in the column.”

How do I get GROUP BY type functionality out of ADO.NET without writing my Table to a separate database and running a query there? Is there some way to do it by creating or using a second table?

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1 Answer

  1. Editorial Team

    You can use the grouping ability of LINQ to accomplish this. Also, you can bind a DataGrid to a LINQ query, but the data will be read only.

    A web search for LINQ grouping should get you where you’re going.

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