c# 數組拼接、DataTable拼接

            //數組拼接
            var intArray_1 = new int[] { 1, 2, 3 };
            var intArray_2 = new int[] { 4, 5, 6 };
            var result = intArray_1.Concat(intArray_2);
            foreach (var item in result)
            {
                Console.WriteLine(item);
            }

            //datatable拼接
            //創建表頭
            DataTable dt1 = new DataTable();
            dt1.Columns.Add(new DataColumn("姓名",typeof(string)));
            dt1.Columns.Add(new DataColumn("年齡", typeof(string)));
            dt1.Columns.Add(new DataColumn("班級", typeof(string)));
            //添加一行數據
            DataRow dr = dt1.NewRow();
            dr["姓名"] = "小明";
            dr["年齡"] = "18";
            dr["班級"] = "三班";
            dt1.Rows.Add(dr);

            //克隆一個dt
            var newDataTable = dt1.Clone();
            //添加一行數據
            newDataTable.Rows.Add(dr);

            //合並兩個datatable--用Merge()這個方法即可
            dt1.Merge(newDataTable);