MVC :: Bug With HtmlHelper.GenerateIdFromName Versus TagBuilder.GenerateId
Jun 29, 2010
When upgrading to mvc2 i noticed some of my javascript that was keying on "Points[0]_Id" (this is invalid for an html id btw) started to fail. I pulled up the source and noticed that the TagBuilder class now generates valid client id's and replaces all invalid characters with the "IdAttributeDotReplacement" (which is a terrible name now, since it's not just a dot replacement character anymore). I started to look for a way to generate client id's using a helper built into mvc and came across HtmlHelper.GenerateIdFromName, but this still generates ids the invalid way!
TagBuilder.GenerateId( "Points[0].Id" ) = "Points_0__Id"
HtmlHelper.GenerateFromName( "Points[0].Id" ) = "Points[0]_Id"
IMO: the tagbuilder class or the GenerateFromName code should not be duplicated in two different spots or else you will get errors like this. Also I consider this change made to TagBuilder.GenerateId to be a breaking change and should be included in the breaking changes section of the release notes.
View 2 Replies
Similar Messages:
Feb 16, 2010
What are the advantages of extending HtmlHelper instead of creating a Custom Class.
f.e. <%= Html.Table(data) %> vs <%= CustomClass.Table(data) %>
View 2 Replies
Jan 5, 2010
The ASP.NET MVC RC change the GenerateId() behavior in theTagBuilder class. I know you followed the
HTML 4.01 Specification, but there are so many non-standard HTML ID existed in the world.For example, there are columns in the database tables that contains non-ASCII characters ( e.g. Chinese, Japanese, ... ). Due to Model passed to the View, the input field ID will contains that characters. For this new GenerateId() feature will breaking changes our original ASP.NET MVC application. All the ID will just gone.
View 5 Replies
Jan 9, 2010
I would like to extend the HtmlHelper by using metadata (similar to DataAnnotaions metadata). Specifically I want to be able to add a 'Title' attribute to html controls that will then appear as a tooltip on the control. I would like to keep the tooltip text with my model, for example by adding 'Tiltle' metadata to the model as follows:
[DisplayName("User Id")]
[Title("Enter your 10 digit user id")]
property UserId { get; set; }
So the questions are:
1. How do I add metadata (such as 'Title') to my model?
2. How do I access this metadata in my HtmlHelper extension method?
[code]....
View 4 Replies
Sep 16, 2010
What is the difference between; Deploying an application Releasing an application Implementing an application
View 1 Replies
Nov 10, 2010
I am updating some code from MVC 3 Beta to MVC 3 RC.
TagBuilder is unrecognized. Did the way helpers are created changed?
If not where is the TagBuilder class?
And where can I find MVC 3 Source Code?
View 3 Replies
Jul 23, 2010
I've gone rounds with this ever since I started programming classic ASP 12 (or so) years ago and I've never found a great solution because the architecture of ASP and ASP.NET has always been a swamp of bad practices, magic shared singletons, etc. My biggest issue is with the HttpApplication object with its non-event events (Application_Start, Application_End, etc.).
If you want to do stuff once for the entire lifespan of an HTTP application, Application_Start is the obvious place to do it. Right? Not exactly. Firstly, this is not an event per se, it's a magic naming convention that, when followed, causes the method to be called once per AppDomain created by IIS.
Besides magic naming conventions being a horrible practice, I've started to think it might be a reason there exist no such thing as a Start event on the HttpApplication object. So I've experimented with events that do exist, such as Init. Well, this isn't really an event either, it's an overridable method, which is the next best thing.
It seems that the Init() method is called for every instantiation of an HttpApplication object, which happens a lot more than once per AppDomain. This means that I might as just put my startup logic inside the HttpApplication object's constructor.
Now my question is, why shouldn't I put my startup logic in the constructor? Why does even Init() exist and do I need to care about Application_Start? If I do, can anyone explain why there is no proper event or overridable method for this pseudo-event in the HttpApplication object?
And can anyone explain to me why in a typical ASP.NET application, 8 instances of my HttpApplication are created (which causes the constructor and Init to run just as many times, of course; this can be mitigated with locking and a shared static boolean called initialized) when my application only has a single AppDomain?
View 2 Replies
Mar 23, 2010
I am looking to write a few helpers in my own assembly modeled after the helpers in System.web.mvc. My problem is that I cannot use the call to Tagbuilder.ToMvcHtlString since it is internal. So if I return a string it wont be ready for asp.net 4 when it comes.
I don't want to add anything to system.web.mvc as that is a given dll.
View 1 Replies
Feb 9, 2011
was tagbuilder dropped in favour of Razor syntax?
If not, where did it go? It used to live in System.Web.Mvc -- not anymore.
View 5 Replies
Aug 12, 2010
I know this is kind of obsessive, but is there a way to control the order that the TagBuilder class renders the attributes of an HTML tag when you call ToString()?
i.e. so that
var tb = new TagBuilder("meta");
tb.Attributes.Add("http-equiv", "Content-Type");
tb.Attributes.Add("content", "text/html; charset=utf-8");
tb.ToString(TagRenderMode.SelfClosing)
will return
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
not
<meta content="text/html; charset=utf-8" http-equiv="Content-Type" />
Changing the order that you add the attributes doesn't change it, it seems to be rendering in alphabetical order
View 2 Replies
Feb 19, 2011
I am new to MVC and I am trying to create my own extension method so that I can add onto the html helpers that are available in my razor views. Html.DropDownListFor() lets you create a drop down list for any propery on your model. I would like to create a helper called Html.StateDropDownListFor() that does the exact same thing, except loads the drop down with all 50 US states. This way I don't have to create a SelectList for every single state drop down that I create. What is the easiest way to do this? Right now I have this:
[code]....
Am I even close? I don't want to rebuild a whole text box helper, I just want to create a helper that utilizes the existing text box helper but does the SelectList for me. That way in my views I could just do Html.StateDropDownList(x => x.State)
[code]....
View 2 Replies
Sep 20, 2010
How can I call HtmlHelper methods outside of a view? I want to call Html.ActionLink from a C# method. Then use Response.Write to write the output from ActionLink to the output stream of a view. Is there a server side equivalent of HtmlHelper.ActionLink?
View 1 Replies
Mar 25, 2010
i have a very big problem: i've created a new test html helper:
[Code]....
i can call it but the first param that i need to pass is htmlHelper and not text as i should do. Why?
View 9 Replies
Jan 3, 2010
I am trying to debug a problem where HtmlHelper is null in extension methods. Oddly the debugger claims it's fully populated, however I consistently get null exceptions. I'm trying to figure out where HtmlHelper should being instantiated in an attempt to see where my problem may be.
Where should HtmlHelper be Instantiated?
Update: In particular I am trying to implement the extension found here, [URL] within a masterpage. The error occurs on the MVC template's HomeController.Index(). There are some 'plugins'/virtualpathing that may be causing the problem (trying to avoid this can of worms), but, code the code is essentially the same as found here: [URL]. However, I don't want to trouble anyone with the details of all of that.
View 2 Replies
Jul 23, 2010
I am on the way to manpulate existing generice GRID creation, i am stuck as it was using [Code]....
to create action links. I am missing this reference in MVC 2 framework.
View 6 Replies
Aug 24, 2010
I am developing a Web app that is based on ASP.NET 3.5, and i added some page from ASP.NET MVC, everything is ok, until i use the "HTML" helper class, then the page is not being able be render, because this is not recognized.
For Example : Html.BeginForm() => this is not recognize as a method
But if i used "System.Web.Mvc.Html.FormExtensions.BeginForm", which is a extension method itself, it work fine.
Environment : ASP.NET MVC 2 and ASP.NET 3.5
View 1 Replies
Nov 24, 2010
My View inherits Models.MyModel
<%@ Page Language="C#" MasterPageFile="Something.Master" Inherits="Models.MyModel>" %>
I need a property Model.Something to be available in a HtmlHelper method when I call it from this view.
<%= Html.CustomHelper(...) %>
Is there any way to access this? Maybe via ViewContext or ViewDataDictionary?
I do not want to explicitly pass Model.SessionKey for each helper I call.
View 2 Replies
Jul 1, 2010
I am using VS2010 & MVC2 to develop a web app. I noticed that HtmlHelper.LabelFor doesnt contain an override that accepts either a css class or html attributes. I was thinking about writing my own override for this, but am struggling with it.
The current LabelFor method accepts a lambda expression and automatically extrapolates the property name, display name (if specified via [DisplayName] attribute and value and generates the label. How do I write my overridden to do the same, but also insert any htmlAttributes specified such as class, style etc.
View 5 Replies
Feb 11, 2011
I am having some trouble with returning a View in response to an ActionResult method being invoked. In my view I have a ViewData which holds a value which is being read. Current process.. user selects 1 of three radio buttons, and clicks a button to apply the selection, which in turn triggers method which sets the form ..
this.form =
this.htmlHelper.BeginForm("GridEditingMode",
"Classification")
Now in my controller, I change the value in the ViewData and simply which to return to the View();. Here is we're the fun starts.. I receive the following message, and cannot get around it. The view 'GridEditingMode' or its master was not found. The following locations were searched:
[Code]....
View 2 Replies
Aug 16, 2010
am currently stuck with this problem of displaying an image using HtmlHelper class.Here is what i have.
I have a custom HtmlHelper class which supposed to display an image:
[Code]....
[Code]....
I managed to get to the controller, but image shows as null. Is there a way around it ? or maybe an even better way to do this?
View 1 Replies
Mar 2, 2011
i have a class ProductCategoryViewModel
public class ProductCategoryViewModel{
public List<Category> Category { get; set; }
}
List<Category> Category is my database table having two properties Category_Id and Category_Name
and a strongly typed ProductCategoryViewModel View in which a ListBoxFor HtmlHelper is filled with Category_Name and Category_Id
public ActionResult Index(ProductCategoryViewModel model)
{
if (ModelState.IsValid)[code]....
In this Article is also my Database table defined in Linq to Sql classes. I want to get selected value and text from HtmlHelper ListBox to insert it to my Article table
View 8 Replies
Mar 9, 2011
I have created a custom html helper as follow:
[Code]....
In my View, I am using it like this:
[Code]....
However, for some reason nothing gets rendered!
View 4 Replies
Aug 24, 2010
I'm trying to override all the Html.TextBoxFor etc. methods. I want to make them non-static methods in a class that extends ViewUserControl. But, according to intellisense, Html does have access to these methods; they simply don't appear. So basically I want to do something like:
[Code]....
But I'm not getting the syntax right.
Basically just trying to wrap the TextBoxFor call so that my ViewUserControl can drop in a unique id each time.
View 2 Replies
Jul 6, 2010
I saw this implemented somewhere but basically below I'm using the textbox HTMLHelper to draw a textbox with the id myID and default text 'text_goes_here'. I want to also add a class to thiis helper, i saw somewhere it implemented with new {@class =''} as a third parameter creating an object but im not sure exactly how its wrote
<%= Html.TextBox("myID", "text_goes_here") %>
View 1 Replies
Nov 26, 2010
I'm trying to create a jquery template using the HtmlHelper.ActionLink. By default it url encodes the parameters, which causes a problem for the syntax needed for the template. Is there a way to override the encoding.
In this example
<script id="itemTemplate" type="text/x-jquery-tmpl">
@Html.ActionLink("Details", "Details", new { id = "${ID}" } ) | ${Last} | ${First} <br />
</script>
the generated code for @Html.ActionLink ends up being
<a href="/User/Details/%24%7BID%7D">Details</a>
What I'd like to end up with is
<a href="/User/Details/${ID}">Details</a>
<script id="itemTemplate"
type="tex
View 2 Replies
