什么是行业标准最好在C＃中实现自定义异常的做法？ [英] What are industry standard best practices for implementing custom exceptions in C#?

问题描述

什么是行业标准为C＃实现自定义异常的最佳做法？

What are industry standard best practices for implementing custom exceptions in C#?

我已经检查谷歌和有建议大量，但我不知道哪些容纳更多的可信性。

I have checked Google and there's a great number of recommendations, however I don't know which ones hold more credibility.

如果有人有权威文章的链接，这也将是有益的。

If anybody has any links to authoritative articles, that would also be helpful.

推荐答案

有关创建自定义异常的标准是从的异常。然后，您可以介绍你自己的属性/方法和构造函数重载（如适用）。

The standard for creating custom exceptions is to derive from Exception. You can then introduce your own properties/methods and overloaded constructors (if applicable).

下面是一个自定义 ConnectionFailedException 这需要一个额外的参数，它是特定的异常类型的一个基本的例子。

Here is a basic example of a custom ConnectionFailedException which takes in an extra parameter which is specific to the type of exception.

[Serializable]
public class ConnectionFailedException : Exception
{
    public ConnectionFailedException(string message, string connectionString)
        : base(message)
    {
        ConnectionString = connectionString;
    }

    public string ConnectionString { get; private set; }
}

在此可以在其中应用程序试图连接到一个数据库例如

In the application this could be used in scenarios where the application is attempting to connect to a database e.g.

try
{
    ConnectToDb(AConnString);
}
catch (Exception ex)
{
    throw new ConnectionFailedException(ex.Message, AConnString);
}

这是给你，然后办理 ConnectionFailedException 在一个较高的水平（如适用）

It's up to you to then handle the ConnectionFailedException at a higher level (if applicable)

另外看看设计自定义异常和自定义异常

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