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POCustomize Html.ValidationMessageFor doesn't work in client side
 

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  1. POCustomize Html.ValidationMessageFor doesn't work in client side
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    <p>I am working on mvc3 application, i have created a custom validationMessage to validate a simple field. This custom validationMessage only show an div with title and message instead of the default span, i have this :</p> <pre><code>@Html.ValidationMessageCustomFor(model =&gt; model.FirstName) </code></pre> <p>This is the code to my custom validation:</p> <pre><code>public static MvcHtmlString ValidationCustomFor&lt;TModel, TProperty&gt;(this HtmlHelper&lt;TModel&gt; helper, Expression&lt;Func&lt;TModel, TProperty&gt;&gt; expression) { string propertyName = ExpressionHelper.GetExpressionText(expression); string name = helper.AttributeEncode(helper.ViewData.TemplateInfo.GetFullHtmlFieldName(propertyName)); if (helper.ViewData.ModelState[name] == null || helper.ViewData.ModelState[name].Errors == null || helper.ViewData.ModelState[name].Errors.Count == 0) { return MvcHtmlString.Empty; } StringBuilder htmlValidation = new StringBuilder(); htmlValidation.AppendLine("&lt;div&gt;"); htmlValidation.AppendLine("&lt;table&gt;"); htmlValidation.AppendLine("&lt;tr&gt;"); htmlValidation.AppendLine("&lt;td&gt;&lt;img src='/Content/Imgages/Error.jpg'&gt;&lt;/td&gt;"); htmlValidation.AppendLine("&lt;/tr&gt;"); htmlValidation.AppendLine("&lt;tr&gt;"); htmlValidation.AppendFormat("&lt;td&gt;{0}&lt;/td&gt;", name); htmlValidation.AppendLine("&lt;/tr&gt;"); htmlValidation.AppendLine("&lt;tr&gt;"); htmlValidation.AppendFormat("&lt;td&gt;{0}&lt;/td&gt;", helper.ViewData.ModelState[name].Errors[0].ErrorMessage); htmlValidation.AppendLine("&lt;/tr&gt;"); htmlValidation.AppendLine("&lt;/table&gt;"); htmlValidation.AppendLine("&lt;/div&gt;"); return MvcHtmlString.Create(htmlValidation.ToString()); } </code></pre> <p>This works fine when I use server side validation, but when I active client side validation it doesn't work.</p> <p>The default Html.ValidationMessageFor yes works fine with client side validation, but my custom Html.ValidationMessageCustomFor doesn't work.</p> <p>Could you please help me, any ideas?</p> <hr> <p>I modified my custom helper, I added the "data-valmsg-for" atrib for the span, it is the code :</p> <pre><code> public static MvcHtmlString ValidationCustomFor2&lt;TModel, TProperty&gt;(this HtmlHelper&lt;TModel&gt; helper, Expression&lt;Func&lt;TModel, TProperty&gt;&gt; expression) { string propertyName = ExpressionHelper.GetExpressionText(expression); string name = helper.AttributeEncode(helper.ViewData.TemplateInfo.GetFullHtmlFieldName(propertyName)); if (helper.ViewData.ModelState[name] == null || helper.ViewData.ModelState[name].Errors == null || helper.ViewData.ModelState[name].Errors.Count == 0) { return MvcHtmlString.Empty; } TagBuilder tag = new TagBuilder("span"); tag.Attributes.Add("class", "field-validation-error"); tag.Attributes.Add("data-valmsg-for", name); tag.Attributes.Add("data-valmsg-replace", "true"); var text = tag.ToString(TagRenderMode.StartTag); text += "&lt;b&gt;My custom html&lt;/b&gt;"; text += tag.ToString(TagRenderMode.EndTag); return MvcHtmlString.Create(text); } </code></pre> <p>But it doesn't appear, it looks I should do something from the client side, but I don't know WHAT? Any ideas please?</p>
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    1. USgunr2171
    1. USJhon Benites
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    1. COWhat is the "ValidationMessageCustomFor" helper method that you're using? There's no such helper method in the MVC3 framework. Is that a helper that you've coded yourself?
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      1. POCustomize Html.ValidationMessageFor doesn't work in client side
      1. USIravanchi
    2. COYes, it is my custom helper, it simply show a div with the validation message, an title and an image, it works fine in server side validation, but when i active the client side it doesn't work, the div with image doesn't appear. Could you please give me some ideas about what is the problem?
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      1. POCustomize Html.ValidationMessageFor doesn't work in client side
      1. USJhon Benites
    3. COIf there's a problem, it should be related to your custom helper method. Could you post code snippets of what it is doing, and how it performs the validation?
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      1. POCustomize Html.ValidationMessageFor doesn't work in client side
      1. USIravanchi
 

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