razor

问题 I'm using ASP.NET MVC3 with Razor and C#. I am making a form builder of sorts, so I have a model that has a collection of the following object: public class MyFormField { public string Name { get; set; } public string Value { get; set; } public MyFormType Type { get; set; } } MyFormType is just an enum that tells me if the form field is a checkbox, or textbox, or file upload, or whatever. My editor template looks something like this (see the comment): ~/Views/EditorTemplates/MyFormField

问题 @Html.DropDownListFor(model => model.ZipFile, new SelectList(ViewBag.ZipFiles)) The above code creates me a select list just fine. But I want to make the selection optional. Unfortunately there is no empty option and I'd like to add one in. How would I do this? 回答1: By using the proper DropDownListFor overload: @Html.DropDownListFor( model => model.ZipFile, new SelectList(ViewBag.ZipFiles), "-- please select a zip file --" ) 回答2: @Html.DropDownListFor(model => model.Country, new List

问题 I am new to ASP.NET MVC and need some help. I have a need to create a form where the form is dynamically created. For example let's say I have a model named Person. The Person has a first and last name. In the form I want to allow the user to enter the first and last name of the person. I know how to do that, but what I don't know how to do is allow the user to add multiple persons and make that a single form submission. On the initial load of the page (view) it would by default show two

问题 I have looked through some various answers related to this but all were for mvc3 or not for Razor. I have a single page that has multiple forms, in partial views, that are for editing a different models. However, most of those models have a 'name' field. I am looking to be able to specify an editorfor with a specific id as such: <div class="editor-label"> @Html.LabelFor(model => model.Name) </div> <div class="editor-field"> @Html.EditorFor(model => model.Name, new {id = "PersonName"}) @Html

问题 How can I put a span element inside ActionLink BUT NOT WITH URL.ACTION? This: <li><span> @Ajax.ActionLink("LinkText", "ControllerName", new AjaxOptions { UpdateTargetId = "div", InsertionMode = InsertionMode.Replace, HttpMethod = "GET", LoadingElementId = "progress" }) </span></li> generates this: <li> <span> <a href="/Home/ControllerName" data-ajax-update="#scroll" data-ajax-mode="replace" data-ajax-method="GET" data-ajax-loading="#progress" data-ajax="true">LinkText</a> </span> </li> But I

问题 I'd like to set a default Razor layout via code in either a base controller or an attribute. It was mentioned in the Docs that this is possible, but I can't figure out how it's done. I know there's the masterPage parameter to the View method available, but I would like all views returned by a controller to have this value set automatically. And no, I can't use _ViewStart for this since my views are going to be in various places (this is not a normal MVC site configuration). Thanks 回答1: I

问题 I have an entity called Domain.Models.BlogPost which contains the following properties: PostID Title Author PostedDate Body I also have an entity called Domain.Models.PostComment which contains the following properties: CommentID PostID Author Email Website Body BlogPost contains many PostComments . A one to many relationship. Now I have a view like this (separated comment form from blog post code via html comment): @model Domain.Models.BlogPost @using Domain.Models; @{ ViewBag.Title = "Post"

问题 My question in general about render pipeline, i have seen ASP.NET MVC pipeline scheme and there was a step called View Engine, so how it works? I want to know about this scenarios: What is rendered first, master page or view? If i use Response.End() in @{} block at the start of page does this interupt execution of page and stops render of the view? 回答1: What is rendered first, master page or view? The view. The parser starts from the Layout and builds a LIFO (Last In First Out) structure

问题 I am trying to create a Razor web helper something like this : @helper DisplayForm() { @Html.EditorForModel(); } But this gives the error "CS0103: The name 'Html' does not exist in the current context" . Is there any way to reference html helpers within web helpers? 回答1: You can cast the static Page property from the context to the correct type: @helper MyHelper() { var Html = ((System.Web.Mvc.WebViewPage)WebPageContext.Current.Page).Html; Html.RenderPartial("WhatEver"); @Html.EditorForModel(

问题 I use the Newtonsoft library to convert C# objects into JSON. Is this use of Newtonsoft.Json.JsonConvert.SerializeObject secure, or is additional encoding necessary? If additional encoding is needed, what do you suggest? Here is how I use it in a Razor view: <script type="text/javascript"> var jsModel = @Html.Raw(Newtonsoft.Json.JsonConvert.SerializeObject(Model)) </script> 回答1: You will at the very least need to perform additional encoding of the '<' character to '\u003C' and the '>'