如何获得财产反思DisplayAttribute？ [英] How to get DisplayAttribute of a property by Reflection?

问题描述

我有一个助手这样的方法，让我的属性名（试图避免魔术字符串）

I have a Helper method like this to get me the PropertyName (trying to avoid magic strings)

public static string GetPropertyName<T>(Expression<Func<T>> expression)
        {
            var body = (MemberExpression) expression.Body;
            return body.Member.Name;
        }

不过有时我PropertyNames未命名以及两种。所以，我想只是使用DisplayAttribute。

However sometimes my PropertyNames aren't named well either. So I would like to rather use the DisplayAttribute.

[Display(Name = "Last Name")]
public string Lastname {get; set;}

请注意，我使用Silverlight 4.0。我无法找到这个通常的命名空间DisplayAttributeName属性。

Please be aware I am using Silverlight 4.0. I couldnt find the usual namespace DisplayAttributeName attribute for this.

我怎样才能改变我的方法读取属性（如果可用）的日eproperty呢？

How can I change my method to read the attribute (if available) of th eproperty instead?

非常感谢，

推荐答案

这应该工作：

public static string GetPropertyName<T>(Expression<Func<T>> expression)
{
    MemberExpression propertyExpression = (MemberExpression)expression.Body;
    MemberInfo propertyMember = propertyExpression.Member;

    Object[] displayAttributes = propertyMember.GetCustomAttributes(typeof(DisplayAttribute), true);
    if(displayAttributes != null && displayAttributes.Length == 1)
        return ((DisplayAttribute)displayAttributes[0]).Name;

    return propertyMember.Name;
}

这篇关于如何获得财产反思DisplayAttribute？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！