With ASP.NET MVC, what is the preferred way to Ajaxify a simple form?


With ASP.NET MVC, what is the preferred way to Ajaxify a simple form?



I am trying to add a simple comments/message box to a web page. When the user enters the comment and hits submit, I would like to save this message to the database and add the comment to the list displayed on the page, without refreshing the entire page.

However, I am not sure of the best way to do that these days. I am using ASP.NET MVC 2. I have been trying to read up on using JQuery for this type of functionality, but I am having problems getting a full picture of the correct approach that isn't also out of date (i.e. it is using an preview version of MVC 1 or older version of JQuery).

I can either find snippets of different pieces without the information of how they work together, or the information appears to be quite dated and no longer valid.

Can someone point me in the right direction for something like this?

Ideally, I am looking for a simple example of the JQuery code, a snippet of any key differences in an HTML form from a normal post method, and the basic method used in the MVC Controller. I need something to help the lightbulb of understanding to turn on. :)

Any help would be greatly appreciated!!


asp.net mvc IDataErrorInfo validation when using ViewModel

1:

How to make data available when one Controller's View calls another Controller's View?
I usually did any thing like . Is WPF and MVC same concepts?
<form action="/controller/action" method="post" id="formID"> </form>  $("#formID").submit(function(){   var form = $(this);   $.post(form.attr("href"), form.serialize(), function(data){/*manipulate page*/}, "text")   return false; }); 
The MVC controller is just like it would be if you weren't using Ajax, except you probably return a different view--one this doesn't contain a full page of markup, depending on what data you want to receive from the server. jQUERY onclick postYou might not need to return any data at all--your "manipulate page" code might have all the info it needs already.. What is the best way to store WMD input/markdown in SQL server and display later?
OutOfMemoryException C# When Uploading Image FilesUsing HttpContext.Current.Application to store simple data

2:

Cant open Nerd Dinner 1.0 VS 2008 SP1 MVC 2
You should check out the jQuery Form plugin. You must POST the comment to your controller with ajax, persist the comment, and return a bool w/ JSON. In jquery, define a success handler (see the examples tab) and render the comment at the bottom of your page. You must also check out javascript templates (here is Microsoft's proposed implementation) if you want any formatting control over how to render the comment (without cluttering your JS)..

3:

There's a helper method this allows you to create an Ajax-enabled form. This article should guidance you receive started:. http://msdn.microsoft.com/en-us/library/dd381533.aspx.

4:

For your comment system you must try a mechanism like this:. If you have a model like this.
public class Message {     public int Id {receive ;set;}     public string Text {receive ;set;}     public Comment[] Comments {receive ;set;} }  public class Comment {     public int Id {receive ;set;}     public string Text {receive ;set;} } 
In your messageview.
Message:   <%: Model.Text%> <div id="divComments">     <% Html.RenderPartial("Comment",Model.Comments); %> </div> <% using(Ajax.BeginForm("AddComment", new{id=Model.Id}, new AjaxOptions{HttpMethod="POST",Updatetarreceive Id ="divComments" }))    { %>        <%: Html.TextArea("comment") %>         <input type="submit" value="Add comment" />       <% } %> 
In your comment partial view.
<% foreach(var comment in Model) { %>     <li><%: comment.Text %> <%} 
In your controller.
public MessageController: Controller {     public ActionResult Message(int id)     {         using(MessageRepository messageRepo = new MessageRepository())         {             return View(messageRepo.SelectById(id));         }     }      public ActionResult AddComment([Bind(Prefix="id")]int messageId, string comment)     {         using(MessageRepository messageRepo = new MessageRepository())         {             messageRepo.InsertComment(messageId,comment);              if(this.Request.IsAjaxRequest())                 return View(messageRepo.SelectById(messageId).Comments));             return RedirectToAction("Message", new{id=messageId});         }     } } 


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