在C#中，ShouldSerialize [PropertyName]是否可以替代? [英] Is there an alternative for ShouldSerialize[PropertyName] in C#?

问题描述

最近我一直在编写许多代码，这些代码涉及使用Json.NET进行序列化，并且由于我序列化的数据的性质，有时并不需要序列化其所有属性，因此，我按如下进行操作...

I have been writing a lot of code lately which involves serialization using Json.NET and due to the nature of the data that I serialize, sometimes not all of their properties need to be serialized so, I do as follows...

public int Foo { get; set; }

public bool ShouldSerializeFoo() => Foo > -1;

这很好并且可以工作，但是如果您有很多属性( 我有100多个 )，则涉及很多工作.

This's good and works but involves a lot of work if you have many properties (in my case I have over 100).

所以，我想知道编写这些方法是否还有其他选择.

So, I wanted to know if there's an alternative to writing those methods.

推荐答案

另一种选择是指定[DefaultValue(...)]并使用DefaultValueHandling.Ignore功能:

One alternative option is to specific a [DefaultValue(...)] and use the DefaultValueHandling.Ignore feature:

[DefaultValue(-1), JsonProperty(DefaultValueHandling = DefaultValueHandling.Ignore)]
public int Foo { get; set; } = -1;

请注意，将值初始化为默认值非常重要-因此，属性初始化器中的= -1;.

Note that it is important to initialize the value to the default value - hence the = -1; in the property initializer.

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