End-to-End application testing from a users standpoint

I am looking for a good way to consistently test my web applications from the end users point of view. I have all kinds of ways to check to make sure my code is working behind the scenes. I can’t count the number of times that I make a change to a piece of code, test it and it works fine and then deploy it only to have it blow up somewhere else weeks later. I have by that time forgotten the change I made that caused it to blow up. I need something that I can run every time I make a change to assure me I did not break something somewhere else.

SoapHttpClientProtocol.ReadResponse – The request failed with HTTP status 401: Unauthorized

I have an ASP.NET (v2.0) web application that uses a reference to a SQL Server Reporting Services 208 R2 instance (using the ReportService2010.asmx service endpoint). The web application is hosted on ServerA and the Reporting Services instance is hosted on ServerB. ServerA is running Windows Server 2003 (IIS6) and ServerB is running Windows Server 2008 R2.

ajax with page method

I have a gridview inside an updatepanel and I have a javascript that calls a page method using jquery. I’d like the page method to refresh the gridview based on the parameter it receives from the ajax call.