Question

I’m working on a search function and am limited by my back end. I’m trying to speed it up by doing multiple small searches rather than one big search. What I am currently doing is in the OnClick event, is do the first bit of searching and return the results to a gridview. If there is more searching to be done, I use AjaxControlToolkit.ToolkitScriptManager.RegisterStartupScript to register a small function that clicks the submit button again.

This works but seems like a hack and I feel like there should be a better way. Am I missing something?

Answer 1

I ended up using a Timer like this:

    <asp:Timer runat="server" ID="timer1" Interval="1000"
   ontick="timer1_Tick" Enabled="false" />

Then in the Button’s onClick event, I started a thread running to perform the search and started the timer.

timer1.Enabled = true;
ThreadStart ts = continueSearch;
Thread thread = new Thread(ts);
thread.Start();

And in the timer1_Tick handler:

if(Session["SearchResults"] != null)
{
    DataView dv = (DataView)Session["SearchResults"];
    dv.Sort = (string)Session["SortExpression"] + (string)Session["SortDirection"];
    gvResults.DataSource = dv;
    gvResults.DataBind();
}