Convert DataTable to IEnumerable for LINQ processing
[Test] public void TestDataTableToEnumeration() { var dt = new DataTable(); dt.Columns.Add(" Id ", typeof ( int )); dt.Columns.Add(" Name ", typeof ( string )); dt.Columns.Add(" Value ", typeof ( double )); for ( int i = 0; i < 5; i++) { var row = dt.NewRow(); row[" Id "] = i; row[" Name "] = " Name " + i; row[" Value "] = i + 0.1d; dt.Rows.Add(row); } var data = dt.AsEnumerable().Select(row => new { Id = ( int ) row[" Id "], Name = ( string ) row[" Name "], Value = ( double ) row[" Value "] }).Where(x => x.Id < 3); foreach (var row in data) { Console.WriteLine(" {0},{1},{2} ", row.Id, row.Name, row.Value); } }