Question

我使用枚举作为标志，并希望＆＃34;或＆＃34;它，但始终遇到错误：

枚举值＆＃39; 3＆＃39;类型为＆＃39; Common.EventType＆＃39;并且无法序列化。确保存在必要的枚举值，并且如果类型具有DataContractAttribute属性，则使用EnumMemberAttribute属性标记

代码：

[DataContract]
public enum EventType
{
    [EnumMember]
    Event1 = 1,
    [EnumMember]
    Event2 = 2,
    [EnumMember]
    Event3 = 4,
    [EnumMember]
    AllEvents = Event1 | Event2 | Event3
}

MyContractClient proxy = new MyContractClient（context）;

proxy.Subscribe（ EventType.Event1 | EventType.Event2 ）;

提前谢谢

Answer 1

您需要添加[Flags]属性以通过WCF发送标志。

Enumeration Types in Data Contracts

[DataContract][Flags]
public enum EventType
{
  [EnumMember]
  Event1 = 1,
  [EnumMember]
  Event2 = 2,
  [EnumMember]
  Event3 = 4,
  [EnumMember]
  AllEvents = Event1 | Event2 | Event3
}

Answer 2

当我遇到这个问题时：

... and cannot be serialized. Ensure that the necessary enum values are present 
and are marked with EnumMemberAttribute attribute if the type has 
DataContractAttribute attribute

我发现我不小心通过WCF代理将Enum作为 int 而不是实际的枚举值发送。

就我而言

bad: request.MyEnum = 1
good: request.MyEnum = MyActualEnum.Number1

WCF枚举问题：不能“或”枚举值

2 个答案: