添加table

 private static DataTable CreateWords4Table()
        {
            string[] words = { "blueberry", "chimpanzee", "abacus", "banana", "apple", "cheese" };
            DataTable table = new DataTable("Words4");
            table.Columns.Add("word", typeof(string));

            foreach (string word in words)
            {
                table.Rows.Add(new object[] { word });
            }
            return table;
        }

static void Main(string[] args)
        {
            System.Data.DataTable table = new System.Data.DataTable("TB");
            table.Columns.Add("Id", typeof(Int32));
            table.Columns.Add("Name", typeof(string));

            for (int i = 0; i < 5; i++)
            { 
                table.Rows.Add(new object[]{i,"aa"+i});
            }

            StringBuilder sb = new StringBuilder();
            foreach (DataRow row in table.Rows)
            { 
                foreach(DataColumn columns in table.Columns)
                {
                    Console.Write("{0}:{1}",columns.ColumnName,row.IsNull(columns)?"Null":row[columns]);
                }
            }

            //Console.WriteLine();
            //string str = "123456";
            //str = str.Substring(0,5);
            //Console.WriteLine(str);

            //Console.WriteLine(DateTime.Today+"====="+DateTime.Now);

            //for (int i = 0; i < table.Rows.Count; i++)
            //{
            //    Console.Write(table.Rows[i]["Id"].ToString()+table.Rows[i]["Name"]);
            //}
        }