/// <summary>
/// Wrapper for extern method CreateSymbolicLink. This handles some error cases and provides better information
/// in error cases.
/// </summary>
/// <param name="symlinkPath">Path to the symbolic link you wish to create.</param>
/// <param name="targetPath">Path to the file/directory that the symbolic link should be pointing to.</param>
public static void CreateSymbolicLink(string symlinkPath, string targetPath)
{
// Pre-checks.
if (!(new WindowsPrincipal(WindowsIdentity.GetCurrent()).IsInRole(WindowsBuiltInRole.Administrator)))
{
throw new UnauthorizedAccessException("Process must be run in elevated permissions in order to create symbolic link.");
}
else if (Directory.Exists(symlinkPath) || File.Exists(symlinkPath))
{
throw new IOException("Path Already Exists. We cannot create a symbolic link here");
}
// Create the correct symbolic link.
bool result;
if (SHFILEOPSTRUCT.Exists(targetPath))
{
result = CreateSymbolicLink(symlinkPath, targetPath, NativeMethods.SymbolicLink.File);
}
else if (Directory.Exists(targetPath))
{
result = CreateSymbolicLink(symlinkPath, targetPath, NativeMethods.SymbolicLink.Directory);
}
else
{
throw new FileNotFoundException("Target File/Directory was not found. Cannot make a symbolic link.");
}
// Validate that we created a symbolic link.
// If we failed and the symlink doesn't exist throw an exception here.
if (!result)
{
if (!Directory.Exists(symlinkPath) && !File.Exists(symlinkPath))
{
throw new FileNotFoundException("Unable to find symbolic link after creation.");
}
else
{
Marshal.ThrowExceptionForHR(Marshal.GetHRForLastWin32Error());
}
}
}
