System.Configuration.Internal.WriteFileContext.FileIsWriteLocked C# (CSharp) Метод

        private bool FileIsWriteLocked( string FileName ) {
            Stream FileStream  = null;
            bool   WriteLocked = true;

            if (!FileUtil.FileExists(FileName, true)) {
                // It can't be locked if it doesn't exist
                return false;
            }

            try {
                // Try to open for shared reading
                FileStream  = new FileStream( FileName, 
                                              FileMode.Open, 
                                              FileAccess.Read, 
                                              FileShare.Read | FileShare.Delete);

                // If we can open it for shared reading, it is not 
                // write locked
                WriteLocked = false;
            }
            finally {
                if ( FileStream != null ) {
                    
                    FileStream.Close();
                    FileStream = null;
                }
            }
            
            return WriteLocked;
        }