cant group by using linq

Question

i am using vb.net and dataset have two table and relation , i query only on the first table but i cant use group by on any filed of the table it give Definition of method 'GroupBy' is not accessible in this context here is the code

 Dim Groups = From n In dataSetTableAsEnumerable _
Group By n.filedName  Into Group

Answer 1

You need to tell it which thing you're grouping, for example:

 Dim Groups = From n In dataSetTableAsEnumerable _
              Group n By n.filedName  Into Group _
              Select Group

In your case you need Group n By as opposed to just Group By.