C# --try catch finally

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catchfinally 一起使用的常见方式是:在 try 块中获取并使用资源,在catch 块中处理异常情况,并在finally 块中释放资源。

finally 块用于清除 try 块中分配的任何资源,以及运行任何即使在发生异常时也必须执行的代码。控制总是传递给 finally 块,与 try 块的退出方式无关。

 

复制

// try_catch_finally.csusing System;public class EHClass{    static void Main()    {        try        {            Console.WriteLine("Executing the try statement.");            throw new NullReferenceException();        }        catch (NullReferenceException e)        {            Console.WriteLine("{0} Caught exception #1.", e);        }        catch        {            Console.WriteLine("Caught exception #2.");        }        finally        {            Console.WriteLine("Executing finally block.");        }    }}

示例输出

Executing the try statement.System.NullReferenceException: Object reference not set to an instance of an object.   at EHClass.Main() Caught exception #1.Executing finally block.

 

 

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