Linq 查询

            var dt = new DataTable();

            var list = dt.AsEnumerable();

            var qurey = from tmp in list

                        where 1 == 1

                        select new ent()

                        {

                            Id = tmp.Field<string>("Id"),

                            Name = tmp.Field<string>("Name")

                        };

            qurey.ToList();

        public class ent

        {

            public string Id { get; set; }

            public string Name { get; set; }

        }

//优化

  var dt = new DataTable();

        dt.Columns.Add("Id");

        dt.Columns.Add("Name");

        dt.Columns.Add("Addre");

        DataRow dr = dt.NewRow();

        dr["Id"] = "01";

        dr["Name"] = "King";

        dr["Addre"] = "addreeeeeee";

        dt.Rows.Add(dr);

        

        var list = dt.AsEnumerable();

        var qurey = list.Select(tmp => new

        {

            Id = tmp.Field<string>("Id"),

            Name = tmp.Field<string>("Name")

        });

        var lis = qurey.ToList();

        var dtTmp = ToDataTable(lis);

来自为知笔记(Wiz)