C＃允许我们创建用户定义的或自定义的异常。它用于产生有意义的异常。为此，我们需要继承Exception类。
C＃用户定义的异常示例
using System;
public class InvalidAgeException : Exception
{
public InvalidAgeException(String message)
: base(message)
{}
}
public class TestUserDefinedException
{
static void validate(int age)
{
if (age <
18)
{
throw new InvalidAgeException("Sorry, Age must be greater than 18");
}
}
public static void Main(string[] args)
{
try
{
validate(12);
}
catch (InvalidAgeException e) { Console.WriteLine(e);
}
Console.WriteLine("Rest of the code");
}
}【C#用户定义的异常】输出：
InvalidAgeException: Sorry, Age must be greater than 18
Rest of the code推荐阅读
- C# TextWriter用法
- C#文件流
- C# finally块
- C# try-catch用法
- C#异常处理
- C#字符串
- C# StreamReader用法
- C# StreamWriter用法
- C#系统异常