How to pass image to Eval method from handler.ashx to imageurl? - asp.net

Question

I want to retrieve image from database and display in an aspx page. I use Linq to SQL. And a Generic handler.
Handler2.ashx code:
public void ProcessRequest(HttpContext context)
{
if (context.Request.QueryString["id"] != null)
{
int id;
string sid = context.Request.QueryString["id"];
if (int.TryParse(sid, out id))
{
Stream strm = getImage(id);
byte[] buffer = new byte[4096];
int i = strm.Read(buffer, 0, 4096);
while (i > 0)
{
context.Response.OutputStream.Write(buffer, 0, 4096);
i = strm.Read(buffer, 0, 4096);
}
}
else
{
//
}
}
}
public Stream getImage(int id)
{
using (DummyDBEntities cntx = new DummyDBEntities())
{
var db = from c in cntx.Images
where c.imageId == id
select c.imageData;
MemoryStream ms = new MemoryStream();
byte[] byteArray = new byte[db.ToArray().Length];
ms.Write(byteArray, 0, db.ToArray().Length);
return new MemoryStream(byteArray);
}
}
And a button control in Default.aspx page when I click, redirects to handler1.ashx. Gets the id of image from database and supposed to Show it in Default.aspx asp:image control
protected void btnGetID_Click(object sender, EventArgs e)
{
int id=Convert.ToInt32(txtGetID.Text);
Response.Redirect("Handler2.ashx?id="+id);
Image1.ImageUrl = '<%# "~/Handler2.ashx?id=" + Eval("imageData"); %>';
}
How do i supposed to write Eval method and the querystring to pass the image to imageurl?
Image1.ImageUrl = '<%# "~/Handler2.ashx?id=" + Eval("imageData"); %>';
Please help, thanks.

Answer 1

I hope I understood your problem right.
You want to display the image from your handler in the Image1. For that you can just do the following
Image1.ImageUrl = ResolveUrl("~/Handler2.ashx?id=" + id);