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Lidarr/NzbDrone.Web/Helpers/DescriptionExtension.cs

27 lines
868 B

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Linq.Expressions;
using System.Web;
using System.Web.Mvc;
namespace NzbDrone.Web.Helpers
{
public static class DescriptionExtension
{
public static MvcHtmlString DescriptionFor<TModel, TValue>(this HtmlHelper<TModel> html, Expression<Func<TModel, TValue>> expression)
{
var memberEx = expression.Body as MemberExpression;
if (memberEx == null)
throw new ArgumentException("Body not a member-expression.");
string name = memberEx.Member.Name;
var attributes = TypeDescriptor.GetProperties(typeof(TModel))[name].Attributes;
var desc = (DescriptionAttribute)attributes[typeof(DescriptionAttribute)];
return new MvcHtmlString(desc.Description);
}
}
}