如何知道某个方法是否可以抛出异常 [英] How to know if some method can throw an exception

问题描述

我是 Windows 8 和 C# 开发的新手，但我有一定的 Java 编程经验.

I'm new in a developement for Windows 8 and C#, but I have certain experience with Java Programming.

因此，当我尝试在 Java 中创建一些 Json 解析器(例如)时，如果不使用 try - catch 块，我就无法做到这一点，这样我就可以处理异常，但是当我尝试执行在 c# (Windows 8) 中相同，我不使用 try - catch 块，它也可以工作，如下所示:

So, when I try to make some Json parser (for example) in java, I can't do it without use a try - catch block, and this way I can handle the exception, but when I try to do the same in c# (Windows 8) and I don't use the try - catch block it works too, like this:

if (json != null)
{
        JObject jObject = JObject.Parse(json);

        JArray jArrayUsers = (JArray)jObject["users"];

        foreach (JObject obj in jArrayUsers)
        {
            ListViewMainViewModel user = new ListViewMainViewModel(
                (String)obj["email"],
                (String)obj["token"],
                (String)obj["institution"],
                (String)obj["uuidInstitution"]);

            usersList.Add(user);
        }
        return usersList;
    }

}

据我所知，正确的方法是捕获 JsonReaderException，但 Visual Studio 从未就此警告过我.我想知道是否有一种简单的方法可以知道某些方法是否抛出异常，例如在使用 Eclipse 的 Java 上(这是强制实现的 try-catch 块或代码无法编译)

As I know the right way is to catch JsonReaderException, but Visual Studio never warned me on that. I would like to know if there's a easy way to know if some method throw an exception, like is on java using eclipse (it's mandatory implement try-catch block or code wont compile)

推荐答案

您必须为此查阅文档.C# 缺少 throws 关键字.

You will have to consult the documentation for that. C# lacks a throws keyword.

您要查找的术语是检查异常，更多信息可以在 C# 常见问题.

The term for what you are looking for is checked exceptions, and more info can be found in the C# FAQ.

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