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Lambda + C#

Posted By: koji80     Posted Date: March 28, 2012    Points:5   Category :C#
I have to make a groupby columns by dynamically ok so this example:

System.Linq.Expressions.Expression <Func <DataRow, object>> result = (g) => new {col1 = g [_colunas.Split (') [0]], col2 = g [_colunas.Split (', ') [1]]},. But, how do the same thing to get the select example
tb.AsEnumerable (). AsQueryable (). GroupBy (result). Select (sel => new {sel.Key.ToString cols = () = QTE sel.Count ()});

incorrect
cols | QTE
"F = {col1, col2 = SC}" | 408

correct
Col1 | Col2 | Qte
"F" | "SC" | 408

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