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问题 I have a model similar to this: public class SampleModel { public Product Product { get; set; } } And in my controller I get an exception trying to print out @Html.TextBoxFor(p => p.Product.Name) This is the error: Exception: An expression tree may not contain a dynamic operation If anyone can give me some clues on how to fix this I would really appreciate it! 回答1: It seems to me that you have an untyped view. By default, Razor views in MVC3 RC are typed as dynamic . However, lambdas do not

问题 I have a model similar to this: public class SampleModel { public Product Product { get; set; } } And in my controller I get an exception trying to print out @Html.TextBoxFor(p => p.Product.Name) This is the error: Exception: An expression tree may not contain a dynamic operation If anyone can give me some clues on how to fix this I would really appreciate it! 回答1: It seems to me that you have an untyped view. By default, Razor views in MVC3 RC are typed as dynamic . However, lambdas do not

问题 I am currently facing a problem with validation after dynamically adding content. I have a view strongly typed to a model ( Order ). This Order can have many items. The model looks something like the following: public class Order { [Key] [HiddenInput] public int id { get; set; } [Display(Name = "Order Number")] public string number { get; set; } [Display(Name = "Order Date")] [DataType(DataType.Date)] [DisplayFormat(ApplyFormatInEditMode = true, DataFormatString = "{0:MM/dd/yyyy}")] public

问题 I am very confuse with this partial view... I want to load a partial view inside my main view ... here is the simple exmaple... I am loading Index.cshtml of the Homecontroller Index action as a main page.. in index.cshtml I am creating a link via @Html.ActionLink("load partial view","Load","Home") in HomeController I am adding a new Action called public PartialViewResult Load() { return PartialView("_LoadView"); } in _LoadView.cshmtl I am just having a <div> Welcome !! </div> BUT, when run

问题 I am very confuse with this partial view... I want to load a partial view inside my main view ... here is the simple exmaple... I am loading Index.cshtml of the Homecontroller Index action as a main page.. in index.cshtml I am creating a link via @Html.ActionLink("load partial view","Load","Home") in HomeController I am adding a new Action called public PartialViewResult Load() { return PartialView("_LoadView"); } in _LoadView.cshmtl I am just having a <div> Welcome !! </div> BUT, when run

问题 I have an existing project written in VS2010 which when loaded in VS2010 works perfectly. When I load this same project in VS2013 the MVC Razor views contain lots of errors as if the config file is missing from the views folder. It appears to have not loaded the Razor editor correctly using the config files from both the root and the views folder and instead gives me errors like ... The name 'model' does not exist in the current context and ... 'System.Web.WebPages.Html.HtmlHelper' does not

问题 I am creating an email engine in mvc3 and I am trying to use razor views as email templates. I heard this is possible but I have not yet found any information about it. 回答1: You can use http://razorengine.codeplex.com/ to achieve this. It allows you to use razor outside of mvc. string Email = "Hello @Model.Name! Welcome to Razor!"; string EmailBody = Razor.Parse(Email, new { Name = "World" }); It's simple to implement and it's available on http://nuget.codeplex.com/ for easy integration into

问题 I have a textarea control that accepts input. I am trying to later render that text to a view by simply using: @Model.CommentText This is properly encoding any values. However, I want to replace the line break characters with <br /> and I can't find a way to make sure that the new br tags don't get encoded. I have tried using HtmlString but haven't had any luck yet. 回答1: Use the CSS white-space property instead of opening yourself up to XSS vulnerabilities! <span style="white-space: pre-line"

问题 I have a form that assembles sections of a larger form. For example: Html.RenderPartial("Partials/MealPreference", Model); I would like to dynamically add sections to the form. Given the nature of my partial views, I must pass the model along as well. In that, I am failing miserably. The markup on my containing page: <div id="additionalPreference"></div> <input type="button" value="Add Additional Preference" id="addPreference" /> <script> $(document).ready(function () { $('#addPreference')

问题 I have a form that assembles sections of a larger form. For example: Html.RenderPartial("Partials/MealPreference", Model); I would like to dynamically add sections to the form. Given the nature of my partial views, I must pass the model along as well. In that, I am failing miserably. The markup on my containing page: <div id="additionalPreference"></div> <input type="button" value="Add Additional Preference" id="addPreference" /> <script> $(document).ready(function () { $('#addPreference')