C#手写DataTable用于DataGridView或FastReport的数据源

       private void btnGenDT_Click(object sender, EventArgs e)
        {
            //创建表对象
            DataTable dt = new DataTable();
            //设置表列
            dt.Columns.Add("姓名");
            dt.Columns.Add("性别");
            dt.Columns.Add("年龄");
            //先插一行试试
            DataRow dr1 = dt.NewRow();
            dr1["姓名"] = "张三";
            dr1["性别"] = "男";
            dr1["年龄"] = "18";
            dt.Rows.Add(dr1);
            for (int i = 0; i < 5; i++)
            {
                DataRow dr = dt.NewRow();
                dr["姓名"] = "李四~"+i.ToString();
                dr["性别"] = i%2==0?"女":"男";
                dr["年龄"] = i+20;
                dt.Rows.Add(dr);
            }
            dataGridView1.DataSource = dt;
            #region 测试
            ////输出测试
            //foreach (DataRow row in dataTable1.Rows)
            //{
            //    for (int i = 0; i < dataTable1.Columns.Count; i++)
            //    {
            //        Console.Write(row[i] + " ");
            //    }
            //    Console.WriteLine();
            //}
            //Console.ReadKey(); 
            #endregion
        }