DataRow[] Aggregate Functions C#
Question
I have an array of DataRow objects in my C# project which I would like to Sum various fields from.
Instead of running through each row and totalling my own sums I noticed the DataRow[].Sum<> function but I am struggling to find any resources on the net on how to use it.
Any pointers in the right direction would be very helpful
:) Removed code example as it was wrong! All now works fine - the link helped cheers Marc.
Solution
That is the LINQ Sum
; and can be used:
var sum = rows.Sum(row => row.Field<int>("SomeColumn")); // use correct data type
(you can also pass in the column index or the DataColumn
in place of the string)
for untyped datarows, or:
var sum = rows.Sum(row => row.SomeColumn);
for typed datarows.
MSDN has full documentation on this; for example, here is the overload I am using in the examples above.
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