@ewomack has a great answer for C#, unless you don’t need extra object values. In my case, I ended up using something similar to: @Html.ActionLink(“Delete”, “DeleteList”, “List”, new object { }, new { @class = “delete”})
<p> <%= Html.Encode( ModelMetadata.FromLambdaExpression<YourViewModel, string>( x => x.SomeProperty, ViewData).DisplayName ) %> <p> Obviously in order to avoid the spaghetti code it is always a good idea to write a helper: public static class HtmlExtensions { public static MvcHtmlString GetDisplayName<TModel, TProperty>( this HtmlHelper<TModel> htmlHelper, Expression<Func<TModel, TProperty>> expression ) { var metaData = ModelMetadata.FromLambdaExpression<TModel, TProperty>(expression, htmlHelper.ViewData); string … Read more
Action and Routes don’t have to have a 1:1 relationship. ActionLink will generate the URL to get to an action using the first matching route by action name. RouteLink will generate a URL to a specific route determined either by name or route values.
Here’s the simple solution. Not everything has to be written with extension method in .NET code. One of the great things about MVC is it gives you easy access to construct your own HTML. With MVC4 you can get the id and name of the element on the expression tree with the helpers HTML.NameFor and … Read more
Html.Action() – Outputs string Html.RenderAction() – Renders directly to response stream If the action returns a large amount of HTML, then rendering directly to the response stream provides better performance than outputting a string.
Rob, actually there is a much simpler way. Instead of name, use Name: @Html.TextBoxFor(x => x.Data, new { Name = Model.Key + “_Data”, id = Model.Key + “_Data” })
HTML Upload File ASP MVC 3. Model: (Note that FileExtensionsAttribute is available in MvcFutures. It will validate file extensions client side and server side.) public class ViewModel { [Required, Microsoft.Web.Mvc.FileExtensions(Extensions = “csv”, ErrorMessage = “Specify a CSV file. (Comma-separated values)”)] public HttpPostedFileBase File { get; set; } } HTML View: @using (Html.BeginForm(“Action”, “Controller”, FormMethod.Post, new … Read more
There is no caching involved here. It’s just how HTML helper work. They first look at the ModelState when binding their values and then in the model. So if you intend to modify any of the POSTed values inside your controller action make sure you remove them from the model state first: [HttpPost] public virtual … Read more
A lambda expression is a way to write an anonymous function, i.e. a function without a name. What you have on the left side of the “arrow” are the function parameters, and what you have on the right side are the function body. Thus, (x => x.Name) logically translates to something like string Function(Data x) … Read more
The valid way is: disabled=”disabled” Browsers also might accept disabled=”” but I would recommend you the first approach. Now this being said I would recommend you writing a custom HTML helper in order to encapsulate this disabling functionality into a reusable piece of code: using System; using System.Linq.Expressions; using System.Web; using System.Web.Mvc; using System.Web.Mvc.Html; using … Read more