如何在自定义帮助器中合并htmlAttributes

请注意，类"显示正确，但是扩展助手中的其他属性在字典中，我在做什么错了?如果可能的话，我只想更改扩展助手而不是编辑器模板，所以我认为传递给EditorFor的RouteValueDictionary需要转换为匿名对象... 解决方案我解决了现在将所有编辑器模板"更改为以下行的问题:var htmlAttributes = HtmlHelper.AnonymousObjectToHtmlAttributes(ViewData["htmlAttributes"]);为此:var htmlAttributes = ViewData["htmlAttributes"] as IDictionary<string, object> ?? HtmlHelper.AnonymousObjectToHtmlAttributes(ViewData["htmlAttributes"]);以及对此的MergeAnonymous方法:static IDictionary<string,object> MergeAnonymous(object obj1, object obj2){ var dict1 = new RouteValueDictionary(obj1); var dict2 = new RouteValueDictionary(obj2); IDictionary<string, object> result = new Dictionary<string, object>(); foreach (var pair in dict1.Concat(dict2)) { result.Add(pair); } return result;}I have a Custom Helper where I receive a htmlAttributes as parameter:public static MvcHtmlString Campo<TModel, TValue>( this HtmlHelper<TModel> helper, Expression<Func<TModel, TValue>> expression, dynamic htmlAttributes = null){ var attr = MergeAnonymous(new { @class = "form-control"}, htmlAttributes); var editor = helper.EditorFor(expression, new { htmlAttributes = attr }); ...}The MergeAnonymous method must return the merged htmlAttributes received in parameter with "new { @class = "form-control"}":static dynamic MergeAnonymous(dynamic obj1, dynamic obj2){ var dict1 = new RouteValueDictionary(obj1); if (obj2 != null) { var dict2 = new RouteValueDictionary(obj2); foreach (var pair in dict2) { dict1[pair.Key] = pair.Value; } } return dict1;}And in the Editor Template for an example field I need to add some more attributes:@model decimal?@{ var htmlAttributes = HtmlHelper.AnonymousObjectToHtmlAttributes(ViewData["htmlAttributes"]); htmlAttributes["class"] += " inputmask-decimal";}@Html.TextBox("", string.Format("{0:c}", Model.ToString()), htmlAttributes)What I have in htmlAttributes at last line in Editor Template is:Click here to see the imageNote that the "class" is appearing correctly, but the others attributes from the Extension Helper are in a Dictionary, what am I doing wrong?If possible, I want to change only Extension Helper and not Editor Template, so I think the RouteValueDictionary passed to EditorFor need to cast to a anonymous object... 解决方案 I solved for now changing all my Editor Templates the line:var htmlAttributes = HtmlHelper.AnonymousObjectToHtmlAttributes(ViewData["htmlAttributes"]);for this:var htmlAttributes = ViewData["htmlAttributes"] as IDictionary<string, object> ?? HtmlHelper.AnonymousObjectToHtmlAttributes(ViewData["htmlAttributes"]);and the MergeAnonymous method to this:static IDictionary<string,object> MergeAnonymous(object obj1, object obj2){ var dict1 = new RouteValueDictionary(obj1); var dict2 = new RouteValueDictionary(obj2); IDictionary<string, object> result = new Dictionary<string, object>(); foreach (var pair in dict1.Concat(dict2)) { result.Add(pair); } return result;} 这篇关于如何在自定义帮助器中合并htmlAttributes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！