如何在函数的c＃中使用异常？ [英] How to hanlde Exception in c# for a function?

问题描述

如何在函数的c＃中使用异常？

解决方案

通常，处理它们for a function通常是一个坏主意，也是本地的。应该很少发现例外情况。它们跳过堆栈帧，这超出了通常的调用/返回机制。该技术旨在将常规指令流与异常情况及其更正隔离开来。



您可以在我过去的答案中找到一些主要想法：

C＃构造函数中的异常会导致来电者分配失败吗？ [ ^ ]，

操作系统中存储.net异常的位置 [< a href =http://www.codeproject.com/Answers/700661/where-was-stored-net-exceptions-in-operating-syste#answer1target =_ blanktitle =New Window> ^ ]。



一些更具体的想法：

从网络摄像头拍摄的图像未保存在服务器上 [ ^ ]，

异常详细信息：System.Runtime.InteropServices.COMException：使用CLSID检索组件的COM类工厂{0006F03A-0000-0000-C000-000000000046}由于以下错误而失败：... [ ^ ]，

处理类库（dll）中的异常 [ ^ ]，

扔。 .then ... rethrowing [ ^ ]，

当我运行一个应用程序时，会遇到如何处理这个问题的异常？ [ ^ ]，

保持ac＃windows表单应用程序运行，尽管有任何未处理的异常 [ ^ ]，

我如何制作一个循环tha当滚动条到达底部时，t将停止 [ ^ ]。

-SA

你可以使用try ... catch语句。

 尝试 
 {
  //  做点什么 
} 
  catch （例外e）
 {
  //  此处处理异常 
} 
 最后 
 {
  //  此块可以忽略 
} 

How to hanlde Exception in c# for a function?

解决方案

Usually, handling them "for a function" is usually a bad idea, too locally. Exception should be rarely caught. They "jump" over the stack frames, which is beyond the usual call/return mechanism. The technology is created to isolate "regular" instruction flow from exceptional situations and their corrections.

You can find some main ideas in my past answers:
Does Exception in C# Constructor Cause Caller Assignment to Fail?[^],
where was stored .net exceptions in operating system[^].

Some of more specific ideas:
Image taken from Webcam not getting saved on the server[^],
Exception Details: System.Runtime.InteropServices.COMException: Retrieving the COM class factory for component with CLSID {0006F03A-0000-0000-C000-000000000046} failed due to the following error:...[^],
Handling exceptions in class library (dll)[^],
throw . .then ... rethrowing[^],
When i run an application an exception is caught how to handle this?[^],
Keep a c# windows form application running despite any unhandled exception[^],
How do i make a loop that will stop when a scrollbar reaches the bottom[^].

—SA

You can use try ... catch statement.

try
{
 // do something
}
catch(Exception e)
{
// deal exception here
}
finally
{
  // this block cab be ignored
}

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