获取变量或参数的名称 [英] get name of a variable or parameter

问题描述

我想获取变量或参数的名称:

I would like to get the name of a variable or parameter:

例如，如果我有:

var myInput = "input";

var nameOfVar = GETNAME(myInput); // ==> nameOfVar should be = myInput

void testName([Type?] myInput)
{
   var nameOfParam = GETNAME(myInput); // ==> nameOfParam should be = myInput
}

我如何在 C# 中做到这一点?

How can I do it in C#?

推荐答案

Pre C# 6.0 解决方案

您可以使用它来获取任何提供的成员的名称:

Pre C# 6.0 solution

You can use this to get a name of any provided member:

public static class MemberInfoGetting
{
    public static string GetMemberName<T>(Expression<Func<T>> memberExpression)
    {
        MemberExpression expressionBody = (MemberExpression)memberExpression.Body;
        return expressionBody.Member.Name;
    }
}

获取变量名:

string testVariable = "value";
string nameOfTestVariable = MemberInfoGetting.GetMemberName(() => testVariable);

获取参数名称:

public class TestClass
{
    public void TestMethod(string param1, string param2)
    {
        string nameOfParam1 = MemberInfoGetting.GetMemberName(() => param1);
    }
}

C# 6.0 及更高版本的解决方案

您可以将 nameof 运算符用于参数、变量和属性等:

C# 6.0 and higher solution

You can use the nameof operator for parameters, variables and properties alike:

string testVariable = "value";
string nameOfTestVariable = nameof(testVariable);

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