如何分辨.NET调用引发的异常? [英] How to tell whitch exceptions a .NET call throws?

问题描述

如果有以下代码:

data.SaveChanges();

(数据是 ObjectContext )

MSDN文档列出了 OptimisticConcurrencyException .很好，但是我知道也可以抛出 UpdateException (也可能抛出其他异常).我怎么知道方法可以抛出哪些异常?

The MSDN doc has listed the OptimisticConcurrencyException as thrown. That's fine but I known that a UpdateException can also be thrown (and possibly others too). How can I know which exceptions a method can throw?

我不想捕获 Exception ，因为我只想捕获我知道可以以某种方式处理的异常.一般来说，这不只是上面的示例.必须有某种方式知道内置" .NET方法会抛出哪个异常.

I do not want to catch Exception as I only want to catch exceptions which I know I can handle in some way. This is generally speaking - not just for the example above. There must be some way of knowing which exception a 'built-in' .NET method is throwing.

推荐答案

那不是本机"方法；这是由Microsoft(而不是您)编写的普通方法.
实际的本机方法无法引发托管异常(尽管COM互操作会将事物转换为托管异常)

That's not a "native" method; it's an ordinary method that happens to be written by Microsoft rather than you.
Actual native methods cannot throw managed exceptions (although COM interop will convert things to managed exceptions)

与Java不同，C#没有异常规范，因此没有固有的方式知道方法将抛出哪些异常.

Unlike Java, C# does not have exception specifications, so there is no inherent way of knowing what exceptions a method will throw.

您唯一的选择是文档或反编译器.

Your only options are the documentation or a decompiler.

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