创建dataTable

public void createTable()

    {

        DataSet ds = new DataSet();

        using (DataTable dt = new DataTable("students"))

        {

            //创建列

            DataColumn dtc = new DataColumn("姓名",typeof(string));

            dt.Columns.Add(dtc);



            dtc = new DataColumn("性别",typeof(string));

            dt.Columns.Add(dtc);



            dtc = new DataColumn("电话",typeof(Int32));

            dt.Columns.Add(dtc);



            //添加数据到DataTable

            DataRow dr = dt.NewRow();

            dr["姓名"] = "张三";

            dr["性别"] = "男";

            dr["电话"] = 54531;

            dt.Rows.Add(dr);



            dr = dt.NewRow();

           

            dr["姓名"] = "李四";

            dr["性别"] = "男";

            dr["电话"] = 5731;

            dt.Rows.Add(dr);



            dr = dt.NewRow();

           

            dr["姓名"] = "王五";

            dr["电话"] = 5868451;

            dr["性别"] = "女";

            dt.Rows.Add(dr);

            ds.Tables.Add(dt);

        }

    }