.NET Framework 使用finally块
示例
不论是否发生异常finally{...},atry-finally或a的块try-catch-finally始终执行(StackOverflowException抛出a或调用时除外)。Environment.FailFast()
它可以用来安全地释放或清除try{...}块中获取的资源。
Console.Write("请输入文件名: "); string filename = Console.ReadLine(); Stream fileStream = null; try { fileStream = File.Open(filename); } catch (FileNotFoundException) { Console.WriteLine("File '{0}' could not be found.", filename); } finally { if (fileStream != null) { fileStream.Dispose(); } }