static string GetResourceNetworkName(SafeHResource hResource) { // On Vista and above, this API can be called with null and 0 to discover the true length // of the return buffer. However, on Win2003 that causes the API to fail with // ERROR_DEPENDENCY_NOT_FOUND. To play it safe, we simply pre-allocate a buffer up front // that should be enough to catch the two possible cases: // - 15-character NetBios names // - 63-character DNS labels uint cch = 64; StringBuilder sb = new StringBuilder((int)cch); #pragma warning suppress 56523 if (SafeNativeMethods.GetClusterResourceNetworkName(hResource, sb, ref cch)) { return sb.ToString(); } return null; }