Using an ASHX generic handler with C# in a classic web form app on a master page to render a report via a ajax call

Question

The QUESTION:
How do I get the ashx handler to work with the master page to generate a report when the user clicks on the hyperlink.
I can get it to work if I just route the hyper link control directly to the ashx page, but I eventually need to add code to block the UI while this report being generated.  In the ajax I am thinking I need to do some type of action to force the browser
to kick out the report.. Just not sure...
I have a master page with the following code:
<script type="text/javascript">
function startReport(result) {
$.ajax({
url: "HTTPHandlers/TagExportHandler.ashx",
context: document.body,
success: function(){
alert("done");
//Eventually put code to block UI and etc while report is rendering...
</script>
In the markup I have a asp:hyperlink control...
<asp:HyperLink ID="HyperLink1" runat="server" NavigateUrl="~/HTTPHandlers/TagExportHandler.ashx" OnClick="startReport('');">Tag Export 2</asp:HyperLink>
Then I have a ASHX control that does the following..
public void ProcessRequest(HttpContext context)
using (var db = new TIPWebITDataContext())
string _exportContent = "";
int[] userDepartments = ((User)HttpContext.Current.Session["currentUser"]).Departments.ToArray();
List<TagDetailsDepartments> tagsModelCsvDepartmentses = null;
List<TagDetailsNonDepartments> tagModelCsvNonDepartmentses = null;
var data = GetTagDetails(db, "");
CsvContext cc = new CsvContext();
using (var writer = new System.IO.StreamWriter(context.Response.OutputStream))
CsvFileDescription output = new CsvFileDescription
QuoteAllFields = true,
EnforceCsvColumnAttribute = true
context.Response.AddHeader("content-disposition", "attachment; filename=TagExport.csv");
context.Response.ContentType = "text/csv";
if (userDepartments.Count() > 1)
tagsModelCsvDepartmentses = ((IQueryable<TagDetailsDepartments>)data).ToList();
cc.Write(tagsModelCsvDepartmentses.ToList(), writer, output);
else
tagModelCsvNonDepartmentses = ((IQueryable<TagDetailsNonDepartments>)data).ToList();
cc.Write(tagModelCsvNonDepartmentses.ToList(), writer, output);
context.Response.StatusCode = 200;
cc = null;
writer.Flush();
output = null;
data = null;
tagsModelCsvDepartmentses = null;
tagModelCsvNonDepartmentses = null;
userDepartments = null;
// context.Session.Add("TagExport", "Complete");
GC.Collect();
GC.WaitForPendingFinalizers();
Warren

Answer 1

Hi,
please move your problem to asp.net forums :> forums.asp.net
Mark as answer or vote as helpful if you find it useful | Ammar Zaied [MCP]