C# [Snippet] Get Windows directory

[C#] [Snippet] Get Windows directory - Printable Version

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+---- Thread: [C#] [Snippet] Get Windows directory (/showthread.php?tid=5914167)

[Snippet] Get Windows directory - gigajew - Dec 1, 2018

Here's a snippet to get the Windows directory using the Windows API. Easy to use.

Code 
[DllImport("kernel32.dll", BestFitMapping = true, CallingConvention = CallingConvention.Winapi, CharSet = CharSet.Unicode, SetLastError = true)]

        [return: MarshalAs(UnmanagedType.U4)]

        private static extern uint GetWindowsDirectory(StringBuilder builder, [MarshalAs(UnmanagedType.U4)] uint size);

        private static DirectoryInfo GetWindowsDirectory()

        {

            StringBuilder builder = new StringBuilder(260);

            uint realLength = GetWindowsDirectory( builder, (uint)builder.Capacity);

            string windowsDir = builder.ToString();

            return new DirectoryInfo(windowsDir);

        }

RE: [Snippet] Get Windows directory - Vuln - Dec 1, 2018

Why use WinAPI for this at all?

Code 
new DirectoryInfo(Environment.GetFolderPath(Environment.SpecialFolder.Windows));

RE: [Snippet] Get Windows directory - 0xDEAD10CC - Dec 1, 2018

(Dec 1, 2018 08:35 AM)Jailbyte Wrote: Why use WinAPI for this at all?

Code
new DirectoryInfo(Environment.GetFolderPath(Environment.SpecialFolder.Windows));

^ Exactly

Additionally if you actually read the documentation it says size should be MAX_PATH, and that is not 255... It's 260.

RE: [Snippet] Get Windows directory - gigajew - Dec 1, 2018

Thanks for the input, changed accordingly