获取 .NET 3.5 中 Lambda 表达式中使用的属性名称 [英] Get the property name used in a Lambda Expression in .NET 3.5

问题描述

我有一个问题困扰了我一段时间，但我找不到答案.

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

我需要获取在 Lambda 表达式中引用的属性的名称.我会将 lambda 表达式提供给一个将返回字符串的方法.例如，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

然后该方法将返回:

"WeirdPropertyName"

我已经读到它可以用表达式树来完成，但我没有找到答案.

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

给你:

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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