Visual Studio在错误行断点即使有Try/Catch块 - 小众知识

Visual Studio在错误行断点即使有Try/Catch块

2020-10-29 07:41:18 苏内容
  标签: VS
阅读:4672

I would like Visual Studio to break when a handled exception happens (i.e. I don't just want to see a "First chance" message, I want to debug the actual exception).

e.g. I want the debugger to break at the exception:

try
{
   System.IO.File.Delete(someFilename);
}
catch (Exception)
{
   //we really don't care at runtime if the file couldn't be deleted
}

I came across these notes for Visual Studio.NET:

1) In VS.NET go to the Debug Menu >> "Exceptions..." >> "Common Language Runtime Exceptions" >> "System" and select "System.NullReferenceException"

2) In the bottom of that dialog there is a "When the exception is thrown:" group box, select "Break into the debugger"

3) Run your scenario. When the exception is thrown, the debugger will stop and notify you with a dialog that says something like: "An exception of type "System.NullReferenceException" has been thrown. [Break] [Continue]"

Hit [Break]. This will put you on the line of code that's causing the problem.

But they do not apply to Visual Studio 2005 (there is no Exceptions option on the Debug menu).

Does anyone know where the find this options dialog in Visual Studio that the "When the exception is thrown" group box, with the option to "Break into the debugger"?

Update: The problem was that my Debug menu didn't have an Exceptions item. I customized the menu to manually add it.



When "Just My Code" is enabled, Visual Studio in some cases will break on the line that throws the exception and display an error message that says "exception not handled by user code." This error is benign. You can press F5 to continue and see the exception-handling behavior that is demonstrated in these examples. To prevent Visual Studio from breaking on the first error, just uncheck the Enable Just My Code checkbox under Tools, Options, Debugging, General.


笔者解决方法:

在选项-调试-通用,选中仅我的代码

然后在调试设置(Ctrl+Alt+E),选中所有的CLR异常选项,即可以首先在此处断点

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