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Custom Exceptions相比于ArgumentException/ArgumentNullException，更容易定位报错内容具体是什么，报错内容与具体业务相关。
示例
新建类库项目Exceptions，为Services/CRUDExample项目添加Exceptions项目引用
Exceptions项目中添加InvalidPersonIdException.cs
namespace Exceptions
{
public class InvalidPersonIdException : ArgumentException
{
public InvalidPersonIdException() : base()
{
}
public InvalidPersonIdException(string? message) : base(message)
{
}
public InvalidPersonIdException(string? message, Exception? innerException) : base(message, innerException)
{
}
}
}
PersonsService.cs中UpdatePerson方法中使用自定义的InvalidPersonIdException替换掉ArgumentException
if (matchingPerson == null)
{
//throw new ArgumentException("Given person id doesn't exist");
throw new InvalidPersonIdException("Given person id doesn't exist");
}测试
PersonsController.cs中HttpPost Edit方法中在updatePerson前面添加一段代码
if (ModelState.IsValid)
{
personUpdateRequest.PersonId = Guid.NewGuid();//测试InvalidPersonIdException添加
PersonResponse updatedPerson = await _personsService.UpdatePerson(personUpdateRequest);
return RedirectToAction("Index");
}拓展阅读
Best practices for exceptions - .NET | Microsoft Learn
Gitee获取源码：
https://gitee.com/huang_jianhua0101/asp.-net-core-8.git
标签：InvalidPersonIdException,Custom,报错,265,Exceptions,ArgumentException,message,publ From： https://blog.csdn.net/KevinHuang2088/article/details/139534000