System.IO.WriteAllBytes - Access to path denied error

Question

Currently developing a C# WinForms application in Visual Studio 2010 .NET 4 on Windows 7.

Firstly I am reading a stream of bytes from a file using the File.ReadAllBytes() method. Then when attempting to write the file back, I am getting a access to path denied error when using the WriteAllBytes method.

I have tried passing in literal paths, Environment.SpecialFolder.ApplicationData, Path.GetTempPath(), but all are providing me with the same error.

I have checked permissions on these folders and also attempted to start the program in administrator mode with no luck.

Answer 1

Make sure that you specify the entire path when using File.WriteAllBytes() including file name.

File.WriteAllBytes() cannot write to a general directory, it has to write to a specific file.

Hope this helps.