英文:
How do I send an error to the constructor of the Exception class in addition to string?
问题
我试图将异常发送到基本构造函数，但我不知道如何发送它。
我需要创建一个异常吗？
这是类的代码：
public class InvalidEntityException : Exception
{
public InvalidEntityException(string message, Exception ex) : base(message, ex) { }
}
异常看起来像这样：
> throw new InvalidEntityException( "Add function :: DAL", ???????);
我应该如何抛出异常？
英文:
I am trying send exceptions to the base constructor but I don't know how to send it.
Should I need create an exception?
Here the code of the class:
public class InvalidEntityException : Exception
{
public InvalidEntityException(string message, Exception ex) : base(message, ex) { }
}
The exception look like this:
> throw new InvalidEntityException( "Add function :: DAL", ???????);
How do I need throw the exceptions?
答案1
得分: 1
以下是翻译好的内容：
如果你在一个catch子句内或者有一个当前的异常对象可用，那么请使用该异常对象。
try
{
// 代码
}
catch (Exception ex)
{
throw new InvalidEntityException("Add function :: DAL", ex);
}
如果你没有当前的异常对象，只需传递null。
throw new InvalidEntityException("Add function :: DAL", null);
来自Exception类构造函数的文档：
public Exception (string? message, Exception? innerException);
innerException异常作为当前异常的原因的异常，或者如果未指定内部异常，则为null引用（在Visual Basic中为Nothing）。
英文:
If you are inside a catch clause or have a current exception object available otherwise, use that exception object.
try
{
// code
}
catch(Exception ex)
{
throw new InvalidEntityException("Add function :: DAL", ex);
}
If you don't have a current exception object, just pass null.
throw new InvalidEntityException("Add function :: DAL", null);
From the documentation of the Exception class constructor:
> public Exception (string? message, Exception? innerException);
>
> innerException Exception
>
> The exception that is the cause of the current exception, or a null
> reference (Nothing in Visual Basic) if no inner exception is
> specified.
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