static string GetClusterName(SafeHCluster hCluster) { if (clusterName == null) { uint cch = 255u; StringBuilder sb = new StringBuilder((int)cch); int ret = SafeNativeMethods.GetClusterInformation( hCluster, sb, ref cch, IntPtr.Zero); if (ret != SafeNativeMethods.ERROR_SUCCESS || ret == SafeNativeMethods.ERROR_MORE_DATA) { if (ret == SafeNativeMethods.ERROR_MORE_DATA) { sb = new StringBuilder((int)cch); ret = SafeNativeMethods.GetClusterInformation( hCluster, sb, ref cch, IntPtr.Zero); if (ret != SafeNativeMethods.ERROR_SUCCESS) { return null; } } } clusterName = sb.ToString(); } return clusterName; }