DataTable does not contain definition for AsEnumerable

Question

Using linq to query a datatable returns the following error: CS0117: \'DataSet1.map DataTable\' does not contain a definition for \'AsEnumerable\'

Project include

Answer 1

Google search "system.data.datatable does not contain a definition for asenumerable" brought me here, and my trouble was missing:

using System.Data;

Due to my implement the error message was a bit misleading. Hence, my answer to this question. Code was like...

public List MyMethod(params) {
   return new mynamespace.myclasslib.myclass().GetDataTable(params).AsEnumerable()
      .etc
}

Once I tried to explicitly declare the DataTable, it became obvious that I was missing the using statement.