how to display image from sql table in gridview?

Question

hi i tried to display image from sql table to gridview but its not displaying this s my code to bind gridview with sql table records..

 

 sql.aspx.cs

 

protected void Page_Load(object sender, EventArgs e)

{

   if (!IsPostBack)

   {

         lblsession.Text = "Welcome" + Convert.ToString(Session["UName"]);

         sessionimage();

   }

}

private void sessionimage()

{

      SqlConnection con = new SqlConnection(ConfigurationManager.ConnectionStrings["connect"].ConnectionString);

      try

     {

         string UName = (string)Session["UName"];

         SqlDataAdapter Adp = new SqlDataAdapter("select Photo from TBL_PBLogin where UName='"+ UName +"'", con);

         DataTable Dt = new DataTable();

         con.Open();

         Adp.Fill(Dt);

         gridviewphoto.DataSource = Dt;

         gridviewphoto.DataBind();

         con.Close();

      }

catch (Exception ex)

   {

      throw new Exception(ex.ToString());

   }

}

 

sql.aspx 

 

<div>

      <asp:Label ID="lblsession" runat="server" ForeColor="white" CssClass="label"></asp:Label>

      

       <asp:GridView ID="gridviewphoto" runat="server" AutoGenerateColumns="false" BackColor="#CC3300" ForeColor="Black" ShowHeader="false"          GridLines="None">

      <Columns>

               <asp:TemplateField>

                     <ItemTemplate>

                              <img alt="" src='<%#Eval("Photo")%>' height="50px" width="50px" />

                     </ItemTemplate>

               </asp:TemplateField>

      </Columns>

      </asp:GridView>

</div>