File Access denied in .NET

Question

I am writing an application in c# which saves data to xml. When i reopen the application it says

Access to the path 'C:\ProgramData\Test\abc.xml' is denied.

Can any one pls help me to sort out this problem.

Is there any way to find why access is denied.

Answer 1

You're probably getting this error because you're running Vista or Win7 and you have UAC turned on.

C:\ProgramData requires admin priveledges to write to (but not read from).

I just found this out the hard way because I've been working on a program that was working fine on XP that used System.Environment.SpecialFolder.CommonApplicationData which in Vista refers to the above location and requires elevated privs to write to that directory.