ASP.NET

 <asp:DataList ID="DataList1" runat="server" RepeatColumns="3" RepeatDirection="Horizontal"
   Width="100%" BorderColor="#336699" BorderStyle="Solid" BorderWidth="2px">

   <ItemTemplate>
       <asp:Label ID="lblsStatus" runat="server"></asp:Label>
      <asp:Label ID="Label1" runat="server" Text='<%# Eval("imgname1") %>' Font-Bold="True"
         Font-Size="10pt" ForeColor="#336699" Width="100%" />
      <br />
      <asp:Image ID="imgsss" runat="server" />
   </ItemTemplate>
   <ItemStyle HorizontalAlign="Center" VerticalAlign="Top"  />
</asp:DataList>

protected void Page_Load(object sender, EventArgs e)
   {

       FetchImage();
   }

   private object GetData(string query)
   {
       DataTable dt = new DataTable();
       string constr = ConfigurationManager.ConnectionStrings["constr"].ConnectionString;
       using (SqlConnection con = new SqlConnection(constr))
       {
           using (SqlCommand cmd = new SqlCommand(query))
           {
               using (SqlDataAdapter sda = new SqlDataAdapter())
               {
                   cmd.CommandType = CommandType.Text;
                   cmd.Connection = con;
                   sda.SelectCommand = cmd;
                   sda.Fill(dt);
               }
           }
           return dt;
       }
   }
   protected void FetchImage()
   {

       string id = "1";
       imgss.Visible = id != "0";
       if (id != "0")
       {

           byte[] bytes = (byte[])GetData("SELECT imgdata1 FROM Tbl_images WHERE id =" + id);
           string base64String = Convert.ToBase64String(bytes, 0, bytes.Length);
           imgss.ImageUrl = "imgdata1:image/png;base64," + base64String;
       }
   }