通过WCF服务传递枚举 [英] Passing enums via WCF service

问题描述

我需要seprate我的WCF服务项目的项目定义枚举。我创建包含枚举和其他数据的对象。当我通过WCF服务给客户传递对象，我收到了未找到。

I need to define an Enum in a project seprate to my WCF service project. I am creating an object which contains the enum and other data. when i pass the object via the WCF service to the client i get a not found.

枚举：

public enum Color
{
    Red = 1,
    Blue,
    Green,
}

要传递

对象：

Object to be Passed:

public class MyObject
{
    public Color ColorEnum { get; set; }
    public string Name{ get; set; }
}

只有当我给对象的默认值说ColourEnum =颜色。红做的服务工作。如果没有设置它打破。我知道这是一个解决方法，但即时寻找一个解决方案，更有意义，而不是设置的套利价值。我只是想知道为什么它打破提前

Only if i give the object a default value of say ColourEnum = Color.Red does the service work. if it not set it breaks. i know this is a workaround but im looking for a solution that makes more sense instead of setting an arb value. and i just want to understand why it breaks

感谢

推荐答案

问题是该属性的默认值 ColorEnum 不是你的枚举的有效值：当你创建一个为MyObject ，该属性的默认值是0，0不符合您的枚举的任意值。

The problem is the default value for the property ColorEnum is not a valid value for your enum: when your create a MyObject, the default value for the property is 0, and 0 does not correspond to any value of your enum.

您有多种选择来纠正这种行为。

You have multiple options to correct this behavior.

• 您可以红= 0 而不是红= 1 （甚至忽略它，它也有同样的效果）在枚举声明。这样的话，默认值将是红色的，而不是无意义的值。


• 您可以将默认值默认值= 0添加到您的枚举，你知道将有颜色的含义无法定义。


• 您可以有你的属性格式是一个可空颜色？，所以空将成为既是一个法律价值和默认为属性



• 您可以为MyObject 的构造函数指定默认颜色的ColorEnum属性。

• You can have Red = 0 instead of Red = 1 (or even omit it, it would have the same effect) in your enum declaration. That way, the default value would be Red instead of a nonsensical value.
• You can add a default value Default = 0 to your enum that you know will have the meaning of "the color has not be defined".
• You can have your propery be a nullable Color?, so null would become both a legal value and the default for the property

• You can have the constructor of MyObject assign a default color to the ColorEnum property.

公开为MyObject（）
{
this.ColorEnum = Color.Red;
}

public MyObject() { this.ColorEnum = Color.Red; }

但是，不管你做什么，一个枚举类型的defaul值将始终为0，如果0不对应于合法枚举构件，它必然是一个问题。

But whatever you do, the defaul value for an enumeration type will always be 0. if 0 does not correspond to a legal enum member, it's bound to be a problem.

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