Silverlight File Upload not working on server side

I made File Upload following this tutorial, but for some reason my server side is not worki开发者_运维技巧ng at all.

http://www.c-sharpcorner.com/UploadFile/nipuntomar/FileUploadsilverlight03182009030537AM/FileUploadsilverlight.aspx

Just guessing, but the code includes a line:

UriBuilder ub = new UriBuilder("http://localhost:3840/receiver.ashx");

For this to work in your project, you'll have to change the 3840 to the port number that Visual Studio creates for you when you debug your project. Otherwise you're pointing at a port that isn't listening for anything. Check the URL of the test page to find the correct number.