Exception in mvc.net controller - asp.net-mvc

Question

In mvc .net c# i have over loaded OnException action in my base controller
In controller action I have generated zip file using Ionic.Zip.dll
The code for this is like
foreach (var file in filesToarchive)
{
zip.AddFile(#file.FilePath);
}
zip.Save(Response.OutputStream);
var rept = reports.First();
return File(Response.OutputStream, "plain/zip", "abc.zip");
While downloading the file it throws exception in OnException action in base controller
the exception is :
System.Web.HttpResponseStream.Read(Byte[]
buffer, Int32 offset, Int32 count)
at
System.Web.Mvc.FileStreamResult.WriteFile(HttpResponseBase
response) at
System.Web.Mvc.FileResult.ExecuteResult(ControllerContext
context) at
System.Web.Mvc.ControllerActionInvoker.InvokeActionResult(ControllerContext
controllerContext, ActionResult
actionResult) at
System.Web.Mvc.ControllerActionInvoker.<>c__DisplayClass14.b__11()
at
System.Web.Mvc.ControllerActionInvoker.InvokeActionResultFilter(IResultFilter
filter, ResultExecutingContext
preContext, Func1 continuation) at
System.Web.Mvc.ControllerActionInvoker.<>c__DisplayClass14.<>c__DisplayClass16.<InvokeActionResultWithFilters>b__13()
at
System.Web.Mvc.ControllerActionInvoker.InvokeActionResultWithFilters(ControllerContext
controllerContext, IList1 filters,
ActionResult actionResult) at
System.Web.Mvc.ControllerActionInvoker.InvokeAction(ControllerContext
controllerContext, String actionName)
If anybody has any solution then please give it to me.
Thanks

Answer 1

Try using a memory stream instead of writing to the response:
using (var stream = new MemoryStream())
{
zip.Save(stream);
return File(stream.ToArray(), "plain/zip", "abc.zip");
}
Also I've removed the var rept = reports.First(); line as I don't see any relevance to the code snippet you've posted.