razor

问题 I'm doing a component to format a list, it is an Extension, I wrote the following code, but, when in execution time, it gives me the error: Cannot convert lambda expression to type 'System.Web.WebPages.HelperResult' because it is not a delegate type This is the extension: public static MvcHtmlString FormatMyList<TModel, TValue>(this HtmlHelper<TModel> htmlHelper, IEnumerable<TValue> list, Expression<Func<TValue, System.Web.WebPages.HelperResult>> formatExp = null) { foreach (var item in list)

问题 I had a working MVC application when I decided that it was time for some maintenance. My views were all under SHARED directory and I decided to move them into separate directories. I implemented a CustomViewEngine that I found here: Can I specify a custom location to "search for views" in ASP.NET MVC? View structure looks something like this Views AppViews OtherAppViews ... Shared ... This is an error that I am getting: The view at '~/Views/AppViews/SomeView.cshtml' must derive from ViewPage,

问题 I had a working MVC application when I decided that it was time for some maintenance. My views were all under SHARED directory and I decided to move them into separate directories. I implemented a CustomViewEngine that I found here: Can I specify a custom location to "search for views" in ASP.NET MVC? View structure looks something like this Views AppViews OtherAppViews ... Shared ... This is an error that I am getting: The view at '~/Views/AppViews/SomeView.cshtml' must derive from ViewPage,

问题 Why can't I use ToString("#.##") with a @Html.DisplayFor such as: @Html.DisplayFor(modelItem => modelItem.Balance.ToString("#.##")) 回答1: when I've encountered this before, I simply added a Getter to the model that the View consumes. public string FormattedBalance { get { return this.Balance.ToString("#.##"); } } And then just use it in your view: @Html.DisplayFor(ModelItem => ModelItem.FormattedBalance) 回答2: The DisplayFor renders the default ToString method for the supplied model property.

问题 The error generated is "Conditional Compilation is turned off". Conditional Compilation hack from MSDN is prevalent but fails. There are several questions like this one: Conditional Compilation is turned off in Razor? They all point to the answer of: /*@cc_on @*/ From the article seen here at the MSDN: http://msdn.microsoft.com/en-us/library/5y5529x3(v=vs.90).aspx However, this hack is pretty fail or I seem to fail at implementing it. The trailing @* causes the remaining code in the .cshtml

问题 I'm used to C# and vb.net winforms, and usually can find all the errors I need just by setting a breakpoint and stepping through my code. I would like to know what I'm doing wrong. I'm placing a breakpoint here: public ActionResult Index(int id) { var cnty = from r in db.Clients where r.ClientID == id select r; if (cnty != null) // breakpoint here { return View(cnty); // F11 jumps over this section of code returning me to the error page below. } return HttpNotFound(); } Yet again I have no

问题 I have an ASP.NET MVC 4 app that i'm incorporating an OData API into. This is running the 2012.2 stuff with the larger OData support. I did not use a separate area for this...that might have been a mistake but my app is small and area seemed overkill. I've got my controllers setup correctly and an example path to my Segments collection (segments is a type in my domain) is "/odata/Segments". This loads as expected and is working. On my homepage i'm trying to add a link to this resource using

问题 I'm used to C# and vb.net winforms, and usually can find all the errors I need just by setting a breakpoint and stepping through my code. I would like to know what I'm doing wrong. I'm placing a breakpoint here: public ActionResult Index(int id) { var cnty = from r in db.Clients where r.ClientID == id select r; if (cnty != null) // breakpoint here { return View(cnty); // F11 jumps over this section of code returning me to the error page below. } return HttpNotFound(); } Yet again I have no

问题 I am using Bower in Visual Studio 2017 to install packages such as Bootstrap and jQuery. In my views I am referencing the same libraries using a CDN like so: <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.css" asp-fallback-href="~/lib/bootstrap/dist/css/bootstrap.css" asp-fallback-test-class="glyphicon" asp-fallback-test-property="visibility" asp-fallback-test-value="hidden" /> If I change the version of Bootstrap in Bower from 3.3.7 to something

问题 I am trying to pass data from controller to view. I have searched the web but could not find a solution. if I do this it works: Controller: var yyy = (from a in Connection.Db.Authorities select a) ; ViewBag.data = yyy; View: @foreach(var item in ViewBag.data) { @item.Value } But the following code does not work: Controller: var yyy = (from a in Connection.Db.Authorities select new {Value = a.Value, TypeCode = a.TypeCode, Return = Calculate(a.Return)}) ; ViewBag.data = yyy; View: @foreach(var