[C#] Get Windows Drive

[zackiv31]

Is there a built in function to get the location (drive letter) of the windows drive?

Is the best way to do this just to check for the boot.ini? Was just wondering if there is a more definitive way.

[Antaris Veteran]

You can use the GetWindowsDirectory(...) API call and then get the drive letter from that:

	public static class WinAPI
	{
		[DllImport("kernel32.dll", SetLastError = true, CharSet = CharSet.Auto)]
		private static extern uint GetWindowsDirectory(StringBuilder lpBuffer, uint uSize);

		public static string WindowsDirectory
		{
			get
			{
				StringBuilder builder = new StringBuilder(255);
				int length = (int)GetWindowsDirectory(builder, 255);
				return builder.ToString(0, length).ToLower();
			}
		}

		public static string WindowsDrive
		{
			get 
			{
				return WindowsDirectory.Substring(0,1);
			}
		}
	}

[+Biscuits Brown MVC]

An easier way that uses the framework

 Environment.GetFolderPath(Environment.SpecialFolder.System).Substring(0,1)

This returns the path to drive:\\Windows\System32 folder so you just pull off the drive letter from the left.