Group by linq multiple columns C#

var query = (from t in Transactions
             group t by new {t.MaterialID, t.ProductID}
             into grp
                    select new
                    {
                        grp.Key.MaterialID,
                        grp.Key.ProductID,
                        Quantity = grp.Sum(t => t.Quantity)
                    }).ToList();

Source: stackoverflow.com

Linq group by multiple

.GroupBy(x => new { x.Column1, x.Column2 })

Source: stackoverflow.com

Similar codes

0 vote386 views1 answer
Unity move in x seconds to pos
C#Unity
2 votes326 views1 answer
C# program that uses array, yield keyword
C#
1 vote327 views2 answers
How to make a enum list in c#
C#
-1 vote286 views1 answer
Copy file
C#
0 vote342 views2 answers
C# one line method
C#
57 votes462 views6 answers
Unity find objects with tag
C#Unity
4 votes379 views1 answer
Unity check when clicked on object
C#Unity
0 vote296 views1 answer
Asp c# page scroll position change after postback
C#
0 vote304 views1 answer
Jq map over array
C#
0 vote304 views1 answer
Run file windows forms
C#