DataTable dt = new DataTable();
dt.Columns.Add("Field_ID", typeof(Int32));
dt.Columns.Add("Field", typeof(String));
dt.Rows.Add(new object[] { 1, "Masin" });
dt.Rows.Add(new object[] { 2, "Tank" });
dt.Rows.Add(new object[] { 3, "Helicopter" });
DataTable dt2 = new DataTable();
dt2.Columns.Add("1", typeof(String));
dt2.Columns.Add("2", typeof(String));