C# Postsharp：异常后如何设置返回值

使用Postsharp，在抛出异常后如何设置返回值

我认为这会奏效：

namespace MvcApplication3.Controllers
{
    public class ValuesController : ApiController
    {
        // GET api/values/5
        [MyExceptionHandler]
        public string Get(int id)
        {
            string value = GetValue(id);
            return value;
        }

        private string GetValue(int id)
        {
            throw new DivideByZeroException();
        }
    }

    [Serializable]
    public class MyExceptionHandler : OnExceptionAspect
    {
        public override void OnException(MethodExecutionArgs args)
        {
            args.FlowBehavior = FlowBehavior.Continue;
            args.ReturnValue = "Error Getting Value";
        }
    }
}

我想出来了

您需要从函数返回，而不是继续

    public override void OnException(MethodExecutionArgs args)
    {
        args.FlowBehavior = FlowBehavior.Return;
        args.ReturnValue = "Error Getting Value";
    }