จาก Version ใหม่และเก่า ของบทความ เรื่อง class SqlDatabaseManager

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;

using System.Data;

public partial class ShowFile : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        SqlDatabaseManager sql1 = new SqlDatabaseManager();
        sql1.CommandString = "Select [FileName], [ContentType], [BinaryStream] From [UploadFile] Where [ID]=@ID";
        sql1.AddParaMeter("@ID", int.Parse(Request.QueryString("id").ToString());

        DataTable Dt = new DataTable();
        Dt = sql1.ExecuteQuery();

        try
        {
            Page.Controls.Clear();
            //สำหรับแบบให้ download
            //Response.AddHeader("Content-Disposition", "Attachment;Filename=" + Dt.Rows[0]["FileName"].ToString());
            Response.ContentType = Dt.Rows[0]["ContentType"].ToString();
            Response.BinaryWrite((byte[])Dt.Rows[0]["BinaryStream"]);
        }
        catch
        {
            Response.Write("Cann't read file.");
        }
    }
}

<asp:DataList ID="DataList1" runat="server" CellPadding="4" ForeColor="#333333">
        <FooterStyle BackColor="#990000" Font-Bold="True" ForeColor="White" />
        <AlternatingItemStyle BackColor="White" />
        <ItemStyle BackColor="#FFFBD6" ForeColor="#333333" />
        <SelectedItemStyle BackColor="#FFCC66" Font-Bold="True" ForeColor="Navy" />
        <HeaderStyle BackColor="#990000" Font-Bold="True" ForeColor="White" />
        <ItemTemplate>
            <asp:Label ID="Label1" runat="server" Text='<%# Eval("Name") %>'></asp:Label>
            <asp:Image ID="Image1" ImageUrl='<%# Eval("Picture") %>' runat="server" />
            <asp:Label ID="Label2" runat="server" Text='<%# Eval("Age") %>'></asp:Label>
        </ItemTemplate>
    </asp:DataList>

dbm.CommandString = "Select * From [Emp]";
dt = dbm.ExecuteQuery();

int i = dt.Rows.Count - 1;

for (int x = 0; x < i; x++)
{
   Response.ContentType = "image/jpeg";
   Response.BinaryWrite((byte[])dt.Rows[i]["Picture"]);
}

<asp:Image ImageUrl="~/ShowFile.aspx?id=14" runat="server" />