Save and retrieve image from SQL 2005 in ASP.Net

Code used in Imagehandler.aspx


public class Handler1 : IHttpHandler
{
public void ProcessRequest(HttpContext context)
{
string imageid = context.Request.QueryString["Image"];
SqlConnection con = new SqlConnection("Connectionstring");
con.Open();
SqlCommand command = new SqlCommand("select Image from ImageExample", con);
SqlDataReader dr = command.ExecuteReader();
dr.Read();
context.Response.BinaryWrite((Byte[])dr[0]);
con.Close();
context.Response.End();
}

public bool IsReusable
{
get
{
return false;
}
}
}

Code used in aspx page

<asp:GridView ID="GridView1" runat="server" Width="500px" AutoGenerateColumns="false">
<Columns>
<asp:TemplateField HeaderText="Image">
<ItemTemplate>
<asp:Image ID="Image" runat="server" ImageUrl='<%#"ImageHandler.ashx"%>'/>
</ItemTemplate>
</asp:TemplateField>
</Columns>
</asp:GridView>

Code used in Retrieve image using C#

SqlConnection con = new SqlConnection("Connnection string");
con.Open();
SqlCommand oc = new SqlCommand("Select * from ImageExample", con);
SqlDataAdapter da = new SqlDataAdapter(oc);
DataTable dt = new DataTable();
da.Fill(dt);
GridView1.DataSource = dt;
GridView1.DataBind();