C#允许无涯教程创建用户定义的或自定义的异常。它用于生成有意义的异常。为此，需要继承异常类。
C#用户定义的异常示例
using System;
public class InvalidAgeException : Exception
{
public InvalidAgeException(String message)
: base(message)
{
</span><span class="pun">}</span><span class="pln">
}
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");
}
}
输出：
InvalidAgeException: Sorry, Age must be greater than 18 Rest of the code
