html-helper

Does anybody know what's the difference between Html.RenderAction and Html.Action ? Megawolt 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. The difference between the two is that Html.RenderAction will render the result directly to the Response (which is more efficient if the action returns a large amount of HTML) whereas Html.Action returns a string with the result. check out this link for a detailed

Although I have read the documentation on Html.HiddenFor, I've not grasped what is it used for... Could somebody explain its uses and give a short example? Where should those helpers go in the code? Justin Niessner It creates a hidden input on the form for the field (from your model) that you pass it. It is useful for fields in your Model/ViewModel that you need to persist on the page and have passed back when another call is made but shouldn't be seen by the user. Consider the following ViewModel class: public class ViewModel { public string Value { get; set; } public int Id { get; set; } }

I’m fairly new at C# and MVC and have used lambdas on certain occasions, such as for anonymous methods and on LINQ. Usually I see lambda expressions that look something like this: (x => x.Name), (x => { Console.WriteLine(x)) I understand that lambda = "goes to". I have never seen a lambda expression where the left parameter is not used. I don’t know how to translate this lambda expression though @Html.DisplayFor(modelItem => item.FirstName) Can anyone shed some light on this one for me? Shouldn’t this be (modelItem => modelItem.FirstName)? I got this from Microsoft's Introduction to ASP.NET

I want to set disable attribute based on a condition for Html.TextBoxFor in asp.net MVC like below @Html.TextBoxFor(model => model.ExpireDate, new { style = "width: 70px;", maxlength = "10", id = "expire-date" disabled = (Model.ExpireDate == null ? "disable" : "") }) This helper has two output disabled="disabled " or disabled="". both of theme make the textbox disable. I want to disable the textbox if Model.ExpireDate == null else I want to enable it The valid way is: disabled="disabled" Browsers also might accept disabled="" but I would recommend you the first approach. Now this being said I

This is a follow on from the following question: MVC 3 + $.ajax - response seems to be caching output from partial view There is a detailed description of the problem over there. However, I have now managed to narrow down the problem, that seems to be with the Html.EditorFor helpers, hence the new question. The issue: I post data to the server using $.ajax, then return the html of the partial view that holds the input controls. The problem is that, despite passing a newly created object to the Partial Views model, the various @Html.EditorFor and @Html.DropDownListFor helpers return the OLD

I have a view with a model of type List and I want to place a drop down list on the page that contains all strings from the list as items in the drop down. I am new to MVC, how would I accomplish this? I tried this: @model List<string> @Html.DropDownListFor(x => x) but that threw an error. Any help is appreciated. To make a dropdown list you need two properties: a property to which you will bind to (usually a scalar property of type integer or string) a list of items containing two properties (one for the values and one for the text) In your case you only have a list of string which cannot be