net上传图片（取一张最新图片）

<form id="form1" runat="server">     <div>         &nbsp;<asp:DataList ID="DataList1" runat="server">             <ItemTemplate>                 &nbsp;<img src="upimg/<%# DataBinder.Eval(Container.DataItem,"pic_name") %>" />             </ItemTemplate>         </asp:DataList></div>     </form>

 

//创建连接数据库字符串         string conn = "provider=Microsoft.Jet.OLEDB.4.0;Data source=" + Server.MapPath("App_Data/test.mdb");         OleDbConnection oleConnection = new OleDbConnection(conn);         try         {             //打开数据库连接             oleConnection.Open();             OleDbCommand cmd = new OleDbCommand("select top 1 [id],[pic_name],[introduced] from pic order by id DESC", oleConnection);             OleDbDataAdapter dpt = new OleDbDataAdapter(cmd);             DataSet ds = new DataSet();

            dpt.Fill(ds);             DataList1.DataSource = ds;             DataList1.DataBind();             OleDbDataReader dr = cmd.ExecuteReader();             if (dr.Read())             {                 Label1.Text = dr["introduced"].ToString();             }         }         finally         {             //关闭数据库             oleConnection.Close();         }