DataRow[] Aggregate Functions C# - Appendix

My question arised out of the accept answer here:

DataRow[] Aggregate Functions C#

In that answer, how is the "rows" object intialized?

EDIT: In my case, I have mydataset.Tables[0].Rows collection, from 开发者_如何学JAVAwhich I need to SUM a particular column.

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Well you can create your own list of DataRow

List<DataRow> listOfRows = new List<DataRow>();

Or you can get collection of them from GridView.

var rows = gridView.Tables[0].Rows; //will return a collection of DataRows from your Gridview

Or from DataSet

var rows = dataSet.Tables[0].Rows;

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Probably from a LINQ query like:

List<DataRow> rows = (from row in mydataset.Tables[0].AsEnumerable()
                      select row).ToList();