ASP.NET MVC 4 FileResult - In error

Question

I have a simple Action on a controller which returns a PDF.

Works fine.

public FileResult GetReport(string id)
{
    byte[] fileBytes = _manager.GetRepor         


        

Answer 1

Another workaround for handling prerequisites is to split download process into two stages. First is to check preconditions in server side method which is executed as ajax/post method.

Then if these preconditions are fulfilled you can start download request (e.g. in onSuccess callback where it is checked the return value indicating fulfillment) in which (on server side) you will handle potential exceptions in a way as it was described in above posts.