获取一个字段的名称在C＃ [英] Getting the name of a field in c#

问题描述

由于这个类：

public class MyClass
{
    public int MyField {get; set;}
}

我如何能够提取的名称 MyField的中的代码？

例如，我能够得到这样的类的名称

For example, I am able to get the name of the class like this

typeof(MyClass).Name

我该怎么办了场类似的东西？

How can I do something similar for the field?

究其原因，问题是，我想这个特殊的代码是反对的名字refactorizations性。

The reason for the question is that I want this particular code to be resistant against refactorizations of the names.

编辑：具有耐我的意思是，我想在调用点代码是在字段名的变化，面对强劲。我有一个使用的字段名的字符串表示一些东西。对不起，我可怜的措辞。
我不包括为了保持清洁卫生问题，而不是跑题插入的调用点代码性质的其他讨论的呼叫站点代码。

With resistant I mean that I want the code at the call site to be robust in the face of changes of the fieldname. I have some stuff that is using a string representation of the field name. Sorry for the poor phrasing. I did not include call site code in order to keep the problem clean and not wander off into other discussions on the nature of the call site code.

推荐答案

您不喜欢这样，使用编译器生成的表达式树：

You do it like this, using compiler generated expression trees:

public static string GetMemberName<T, TValue>(Expression<Func<T, TValue>> memberAccess)
{
    return ((MemberExpression)memberAccess.Body).Member.Name;
}

现在调用从代码中的静态方法：

Now call the static method from code:

class MyClass
{
    public int Field;
    public string Property { get; set; }
}

var fieldName = GetMemberName((MyClass c) => c.Field);
var propertyName = GetMemberName((MyClass c) => c.Property);
// fieldName has string value of `Field`
// propertyName has string value of `Property`

字符串值

您现在还可以使用重构来重命名该领域没有打破这个代码

You can now also use refactoring to rename that field without breaking this code

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