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我已经建立了LabelFor一个extention,看起来像这样:Html.LabelFor不工作?
public static MvcHtmlString LabelFor<TModel, TValue>(this HtmlHelper<TModel> self, Expression<Func<TModel, TValue>> expression, Boolean showToolTip, string sufix = "")
{
string description = string.Empty;
var metadata = ModelMetadata.FromLambdaExpression(expression, self.ViewData);
if (showToolTip)
description = metadata.Description;
return LabelFor(metadata.DisplayName, description, self.ViewContext.ViewData.TemplateInfo.GetFullHtmlFieldId(ExpressionHelper.GetExpressionText(expression)), sufix: sufix);
}
这是使用这样的:
<%: Html.LabelFor(model => model.ModelViewAd.TypeOfAd, false)%>
该物业确实有这样的显示属性:
[Display(Name = "Type of ad", Description = "")]
有了断点,我可以看到metadata.DisplayName设置为null?一对夫妇清洗后
[DisplayName("Type of ad")]