.net DataTable 正确排序姿势

关于dataTable中根据列排序正确姿势做个随笔，方便查阅

  System.Data.DataTable dt = new System.Data.DataTable();
             dt.Columns.Add("date", typeof(System.String));
             System.Data.DataRow dr = dt.NewRow();
             dr["date"] = "2016-09";
             System.Data.DataRow dr1 = dt.NewRow();
             dr1["date"] = "2015-09";
             System.Data.DataRow dr2 = dt.NewRow();
             dr2["date"] = "2014-09";
             System.Data.DataRow dr3 = dt.NewRow();
             dr3["date"] = "2016-06";
             System.Data.DataRow dr4 = dt.NewRow();
             dr4["date"] = "2013-10";
             dt.Rows.Add(dr);
             dt.Rows.Add(dr1);
             dt.Rows.Add(dr2);
             dt.Rows.Add(dr3);
             dt.Rows.Add(dr4);
             System.Data.DataView dv = dt.DefaultView;
             dv.Sort = "date";
             System.Data.DataTable dt1 = dv.ToTable();

             foreach (System.Data.DataRow varDr in dt1.Rows)
             {
                 Console.WriteLine(varDr["date"].ToString());
             }