习惯于在一个lambda防爆pression在.NET 3.5的属性名 [英] Get the property name used in a Lambda Expression in .NET 3.5

问题描述

我有一个问题，一直唠叨我有一段时间了，我无法找到答案。

I have a problem that has been nagging me for some time now and I can't find the answer.

我需要获得一个在一个lambda防爆pression被引用的属性的名称。我将提供拉姆达EX pression到这将返回一个字符串的方法。举例来说，如果我有：

I need to obtain the name of the property that is being referenced in a Lambda Expression. I would provide the lambda expression to a method that would return a string. For example if I have:

x => x.WeirdPropertyName

那么该方法将返回：

then the method would return:

"WeirdPropertyName"

我已阅读，它可以与前pression树木来完成，但得到的答复一直躲避我。

I have read that it can be done with expression trees, but the answer has eluded me.

感谢您的帮助

推荐答案

在这里你去：

string GetPropertyName<T>(Expression<Func<T>> property)
{
    var propertyInfo = (property.Body as MemberExpression).Member as PropertyInfo;
    if (propertyInfo == null)
    {
        throw new ArgumentException("The lambda expression 'property' should point to a valid Property");
    }
    return propertyInfo.Name;
}

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