How Can I Retrieve Variable or Parameter Names in C#?

Get the variable or parameter name in C#

In C#development, you may need to obtain the name of the variable or parameter for various purposes. The way to achieve this goal depends on your C#version.

C# 6.0 Edition: Use the custom auxiliary class

Before C# 6.0, it is recommended to use a custom auxiliary class:

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

Get variable name:

<code class="language-csharp">string testVariable = "value";
string nameOfTestVariable = MemberInfoGetting.GetMemberName(() => testVariable);</code>

Get parameter name:

<code class="language-csharp">public class TestClass
{
    public void TestMethod(string param1, string param2)
    {
        string nameOfParam1 = MemberInfoGetting.GetMemberName(() => param1);
    }
}</code>

C# 6.0 and higher versions: Use the nameof operator

In C# 6.0 and higher versions,

The operator provides a simpler way to get the name: nameof

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