手动创建DataTable并绑定gridview

<asp:GridView ID="dg" runat="server" AutoGenerateColumns="False"     BorderWidth="0px"    >
          <Columns>
              <asp:BoundField HeaderText="id" DataField="id" ReadOnly="True" ShowHeader="False" ></asp:BoundField >
              <asp:BoundField HeaderText="名字" DataField="name" HtmlEncode="False"></asp:BoundField >
              <asp:TemplateField HeaderText="图片">
                  <EditItemTemplate>
                      <asp:TextBox ID="TextBox1" runat="server" Text='<%# Bind("img") %>'></asp:TextBox>
                  </EditItemTemplate>
                  <ItemTemplate>
                      <asp:Label ID="Label1" runat="server" Text='<%# Bind("img") %>'></asp:Label>
                  </ItemTemplate>
              </asp:TemplateField>
              <asp:ImageField HeaderText="图片" DataImageUrlField="img"><ControlStyle Width="100px" Height="100px" /></asp:ImageField>
              <asp:BoundField HeaderText="时间" DataField="timer" DataFormatString="{0:d}"></asp:BoundField >
          </Columns>
      </asp:GridView>

using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;

public partial class dataset_datatable : System.Web.UI.Page
{
      protected void Page_Load(object sender, EventArgs e)
      {
          if (!IsPostBack)
          {
              DataSet ds = new DataSet("ds_dry");//创建一个名为ds_dry的DataSet

             DataTable dt = new DataTable("dt_dry");//创建一个名为dt_dry的DataTalbe

              dt.Columns.Add(new DataColumn("id",typeof(int)));//为dt_dry表内建立Column
              dt.Columns.Add(new DataColumn("name", typeof(string)));
              dt.Columns.Add(new DataColumn("img",typeof(string)));
              dt.Columns.Add(new DataColumn("timer", typeof(DateTime)));

             DataRow dr = dt.NewRow();//注意这边创建dt的新行的方法。指定类型是DataRow而不是TableRow，然后不用new直接的用创建的DataTable下面的NewRow方法。
              dr["id"] = 1;
              dr["name"] = "AA";
              dr["img"] = "~/img/1.png";
              dr["timer"] = DateTime.Now;
              dt.Rows.Add(dr);


              dr =dt.NewRow();
              dr["id"] = 2;
              dr["name"] = "bb";
              dr["img"] = "~/img/2.png";
              dr["timer"] = DateTime.Now;
              dt.Rows.Add(dr);

              dr =dt.NewRow();
              dr["id"] = 3;
              dr["name"] = "cc";
              dr["img"] = "~/img/3.png";
              dr["timer"] = DateTime.Now;
              dt.Rows.Add(dr);

              dr =dt.NewRow();
              dr["id"] = 4;
              dr["name"] = "<b>dd</b>";
              dr["img"] = "~/img/4.png";
              dr["timer"] = DateTime.Now;
              dt.Rows.Add(dr);

              dr =dt.NewRow();
              dr["id"] = 5;
              dr["name"] = "ee";
              dr["img"] = "~/img/5.png";
              dr["timer"] = DateTime.Now;
              dt.Rows.Add(dr);
              ds.Tables.Add(dt);//别忘记向ds中添加table

             Session["ds"] = ds;//存储在sessin里面，方便下面调用
              fill();
            
            

          }
       
      }

      private void fill()
      {
         DataSet ds = (DataSet)Session["ds"];//进行强制类型转换
          dg.DataSource = ds;
          dg.DataBind();
      }

}