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Tip of the Day
Language: C#
Expertise: Intermediate
Sep 13, 2006

WEBINAR:

On-Demand

Building the Right Environment to Support AI, Machine Learning and Deep Learning


Retrieve Totals from a Dataset Without Looping

Have you ever looped through the entire dataset to get the totals you need to put in the footer? The DataTable.Compute method eliminates this hassle by retrieving commonly performed arithemetic operations like sum, avg,, etc.

For example:


int iTotal = table.Compute("Sum(amount)", String.Empty);
The preceding code computes the sum of the amount column. You can even filter using the second parameter:

int iTotal = table.Compute("Sum(amount)", "amount > 5" );
Note: You will still need to loop through the items in the ItemDataBound event to assign it to the footer.

Srinath MS
 
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