如何自定义Html.ValidationMessageFor在ASP MVC [英] How to customize Html.ValidationMessageFor in ASP MVC

问题描述

是否可以定制Html.ValidationMessageFor方法，使其产生不同的HTML？

我想要做类似的东西：

 ＆LT; D​​IV CLASS =字段的出错框＆GT;
    ＆LT; D​​IV CLASS =顶＆GT;＆LT; / DIV＆GT;
    ＆LT; D​​IV CLASS =中＆GT;＆LT; P＆gt;这字段是必需的＆LT; / P＆GT;＆LT; / DIV＆GT;
＆LT; / DIV＆GT;
 

解决方案

我不知道是否有可能使用 P aragraph，而不是默认的跨度，因为它可能使无法验证插件放置错误消息。但对于DIV -s，那是很容易 - 你可以编写自定义HTML帮手。

沿着这些东西线（的可能需要进一步的测试/编码的）。您将需要包括这种静态扩展方法的命名空间在您看来，或将其放入 System.Web.Mvc.Html 直接

 公共静态类验证
{
    公共静态MvcHtmlString MyValidationMessageFor＆LT;的TModel，TProperty＆GT;（此的HtmlHelper＆LT;的TModel＆GT;的帮手，防爆pression＆LT; Func键＆LT;的TModel，TProperty＆GT;＆GT;前pression）
    {
        TagBuilder containerDivBuilder =新TagBuilder（分区）;
        containerDivBuilder.AddCssClass（字段错误盒）;        TagBuilder topDivBuilder =新TagBuilder（分区）;
        topDivBuilder.AddCssClass（顶部）;        TagBuilder midDivBuilder =新TagBuilder（分区）;
        midDivBuilder.AddCssClass（中间）;
        midDivBuilder.InnerHtml = helper.ValidationMessageFor（如pression）的ToString（）;        containerDivBuilder.InnerHtml + = topDivBuilder.ToString（TagRenderMode.Normal）;
        containerDivBuilder.InnerHtml + = midDivBuilder.ToString（TagRenderMode.Normal）;        返回MvcHtmlString.Create（containerDivBuilder.ToString（TagRenderMode.Normal））;
    }
}
 

如你所见，这将使用默认 ValidationMessageFor 的方法，不使用验证，插件错误消息处理干扰。

和你使用这个简单的，因为默认的验证消息帮手

  @ Html.MyValidationMessageFor（型号=＆GT; model.SomeRequiredField）
 

Is it possible to customize the Html.ValidationMessageFor method so that it produces different HTML?

I want to do something similar to:

<div class="field-error-box">
    <div class="top"></div>
    <div class="mid"><p>This field is required.</p></div>
</div>

解决方案

I am not sure if it's possible to use paragraph instead of default span, as it may make impossible for validation plugin to place error messages. But for div -s, thats easy - you could write custom html helper.

Something along these lines (may need further testing/coding). You will need to include the namespace of this static extension method in your view, or put this into System.Web.Mvc.Html directly.

public static class Validator
{
    public static MvcHtmlString MyValidationMessageFor<TModel, TProperty>(this HtmlHelper<TModel> helper, Expression<Func<TModel, TProperty>> expression)
    {
        TagBuilder containerDivBuilder = new TagBuilder("div");
        containerDivBuilder.AddCssClass("field-error-box");

        TagBuilder topDivBuilder = new TagBuilder("div");
        topDivBuilder.AddCssClass("top");

        TagBuilder midDivBuilder = new TagBuilder("div");
        midDivBuilder.AddCssClass("mid");
        midDivBuilder.InnerHtml = helper.ValidationMessageFor(expression).ToString();

        containerDivBuilder.InnerHtml += topDivBuilder.ToString(TagRenderMode.Normal);
        containerDivBuilder.InnerHtml += midDivBuilder.ToString(TagRenderMode.Normal);

        return MvcHtmlString.Create(containerDivBuilder.ToString(TagRenderMode.Normal));
    }
}

As you see, this uses default ValidationMessageFor method, to not interfere with validation-plugin error message processing.

And you use this simply, as default validation message helper

@Html.MyValidationMessageFor(model => model.SomeRequiredField)

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