删除文件引发异常UnauthorizedAccessException吗？

Question

I am trying to delete file after I copy the file but I have this exception

System.UnauthorizedAccessException was unhandled
  HResult=-2147024891
  Message=Access to the path 'C:\Users\---\Downloads\file.zip' is denied.
  Source=mscorlib
  StackTrace:
       at System.IO.__Error.WinIOError(Int32 errorCode, String maybeFullPath)
       at System.IO.File.InternalDelete(String path, Boolean checkHost)
       at CleanDownloadFolder.Program.CopyDirectory(String sourcePath, String targetPath) in c:\Users\Abdalla\Documents\Visual Studio 2012\Projects\CleanDownloadFolder\CleanDownloadFolder\Program.cs:line 48
       at CleanDownloadFolder.Program.Main(String[] args) in c:\Users\Abdalla\Documents\Visual Studio 2012\Projects\CleanDownloadFolder\CleanDownloadFolder\Program.cs:line 16
       at System.AppDomain._nExecuteAssembly(RuntimeAssembly assembly, String[] args)
       at Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssembly()
       at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
       at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
       at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
       at System.Threading.ThreadHelper.ThreadStart()
  InnerException: 


C# code
     if (Path.GetExtension(fileName) == ".zip")
                        {
                            System.IO.File.Copy(s, destFile, true);
                            System.IO.File.Delete(s);
                        }

Answer 1

If you have UAC enabled and you are not running your application as an "Administrator" you usually don't have access to delete from the system drive.

have you tried copying the file to some other location ( like D: ) and deleting

also you might find this interesting

How does Read-Only affect a Directory when using C#/.Net?

Answer 2

The error is thrown because your application doesn't have the sufficient rights in order to delete the file at Downloads . You can either:

1. Spawn a new process of your own under Administrator, using the System.Diagnostics.Process namespace. For more information, click here .
2. Download your file to another directory where you have the right to delete any file, such as the AppData directory.

You can get the path of AppData using Environment.GetFolderPath(Environment.SpecialFolder.ApplicationData) , and then create a directory for your application.