使用 Html 帮助程序的标签内的 Html [英] Html inside label using Html helper

问题描述

如何使用 Html.Label 在标签内添加内联 html 元素?

How can I add inline html elements inside a label with Html.Label?

推荐答案

对于自定义帮助程序来说似乎是一个不错的方案:

Looks like a good scenario for a custom helper:

public static class LabelExtensions
{
    public static MvcHtmlString LabelFor<TModel, TProperty>(
        this HtmlHelper<TModel> htmlHelper, 
        Expression<Func<TModel, TProperty>> ex, 
        Func<object, HelperResult> template
    )
    {
        var htmlFieldName = ExpressionHelper.GetExpressionText(ex);
        var for = htmlHelper.ViewContext.ViewData.TemplateInfo.GetFullHtmlFieldName(htmlFieldName);
        var label = new TagBuilder("label");
        label.Attributes["for"] = TagBuilder.CreateSanitizedId(for);
        label.InnerHtml = template(null).ToHtmlString();
        return MvcHtmlString.Create(label.ToString());
    }
}

然后:

@Html.LabelFor(
    x => x.Name, 
    @<span>Hello World</span>
)

<小时>

更新:

要实现您在评论部分提出的要求，您可以尝试以下操作:

To achieve what you asked in the comments section you may try the following:

public static class HtmlHelperExtensions
{
    public static MvcHtmlString LabelFor<TModel, TProperty>(this HtmlHelper<TModel> htmlHelper, Expression<Func<TModel, TProperty>> ex, Func<object, HelperResult> template)
    {
        var htmlFieldName = ExpressionHelper.GetExpressionText(ex);
        var propertyName = htmlFieldName.Split('.').Last();
        var label = new TagBuilder("label");
        label.Attributes["for"] = TagBuilder.CreateSanitizedId(htmlHelper.ViewContext.ViewData.TemplateInfo.GetFullHtmlFieldName(htmlFieldName));
        label.InnerHtml = string.Format(
            "{0} {1}", 
            propertyName,
            template(null).ToHtmlString()
        );
        return MvcHtmlString.Create(label.ToString());
    }
}

然后:

@Html.LabelFor(
    x => x.Name, 
    @<em>mandatory</em>
)

这篇关于使用 Html 帮助程序的标签内的 Html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！