MVC :: ASP 2: Wrong Render Of The Model After Posting
Oct 4, 2010
I have faced with some strange behavior and I hope you will be able to tell, what I do wrong. My goal is to change the order of some object. This object has property Priority which defines the order. Objects render as a list and user can drag elements for prepare order. When user click save, JS code modifies Priority property in hidden fields in accordance with order of elements in the list. And this form is sent to the server.
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Similar Messages:
Feb 4, 2010
I have a page with two forms on it. The first form is a "Search" form and does not have the runat="server" attribute. It is merely meant to post some search criteria to another page on the site. The second form is the standard "aspnetForm". Inside that form I have a ModalPopupExtender... Within the ModalPopupExtender there are two buttons that should postback to the server when they are clicked by the user. My problem is that when the buttons are clicked the page posts back to the "Search" form... The only clue I have is that if I move the form to the bottom of the page (after my ModalPopupExtender), everything works fine. It seems that the extender uses the first form it can find on the page. Is there anyway to force it to postback to the correct form?
[Code]....
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Oct 23, 2010
I am doing project in asp.net(3.5),c#.net and sqlserver2005 I am using cross page posting property from reviewsubmit.aspx page to principalauthentication.aspx, and to get the values to other page i am using get propery, here the problem is when i am posting details to other page from there i am submitting to db. if both users logged in at a time and submitted, second submitted user previouspage values coming as first submitted previous page values. what should i do, how can i resolve
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Aug 1, 2010
I have a weird thing happening. I have two identical databases installed on one virtual machine but under two different instances of SQLServer. For some reason, periodically when saving from one it will save to the other instead. Using debug, I have verified that the connection string is correct and when the item saves, it still saves to the wrong database.I use session variable, and am of the belief that it might have something to do with it...and t hat when I go from one to the other it is still getting the connection string form the other for some reason.To make sure that it isn't a problem, I make sure that I completely close out one database before opening the other in a new IE window.I assume that when I completely close out an internet explorer window that it abandons all session states. Is that true?
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Feb 18, 2010
Is it possible to render partial view as a model form in asp.net MVC?
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Jul 9, 2010
It's a multi-model view, and I'm achieving this through an IList<Book>. Each Book has a Title and an Author
So for example if I wanted to make 3 Books:
[code]....
However, I want to be able to generate such a form for any number of Books. I've done this before in Ruby on Rails through JavaScript and rendering partials, but I don't think I can render a partial in this case because the form changes (the index of the book has to increment for it to work)
EDIT: I'm looking for a way to do this in the Create view in particular. So in this case I don't have a list of books, but I'm building it.
A user should be able to click on a link that says "Add another item" and a form for another book should be appended to the bottom.
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May 9, 2010
Generally speaking we create a custom view for each page. So for an edit view of a car the model might be:
Car CarToEdit{ get; set;}
List<SelectListItem> CarManufacturers{ get; set;}
This has the advantage of giving a strongly typed view. It doesn't decouple the data layer well, but that is a separate issue. I'd then need to do something like (very approx syntax) :
<%= Html.DropDownList("ManufacturerId", Model.CarManufacturers)%>
Because of this, I can't use an EditorFor, and just pass in the model, as it would not render out the dropdownlists. So I think why not annotate the manufacturer field with UIHInt... great that works. ... but how do I pass in the data (both the manufacturerId, and the List<SelectListItem> to the hinted field?One solution is to have the UIHint control do a RenderAction. So the main view would include a line like:
[Code]....
Which would in turn go and render a view :
[Code]....
This works, but seems a little long winded. Can anyone suggest better ways of achieving this?Is anyone actually using UIHint?Also it would be good to be able to cache the output from the partial view (the dropdownlist) which is called from the RenderAction method... but output caches are is basically ignored on a render action (unless I've missed the point here).
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Sep 15, 2010
I'll give a very simple example:
at the moment I have to write like this:
<% Html.RenderPartial("hello", new HelloInput { Name = "Jimmy" } ); %>
I would like to be able to like this:
<%=Html.Hello("Jimmy") %>
So I would like to know how create this helper:
public static string Hello(this HtmlHelper helper, string name)
{
return the result of rendering partial view "hello" with HelloInput{ Name = name };
}
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Nov 16, 2010
Let's assume we have a model:
public class Document
{
public string Name { get; set;}
public List<DayOfWeek> WeekDays {get; set;}
}
is it possible to render checkboxes that represents days of week for that model? i've searched the internet but did not find any solution. I mean it works whith CheckBoxFor(model=> model.SomeProperty) but it does not work if SomeProperty is List<DayOfWeek>. DayOfWeek here is enumerator.
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Nov 24, 2010
Lets say I have a model Model1 with the property say "IsAccessed". Now lets pass this model to a view using the View("Action1", model1). Now lets say user performs some operation in the View and then submits. Basically a Post happens to an Action "Action1" and the same model1 is passed to the Post Action. Now if I had set "IsAccessed" as true in my get Action of "Action1" and if this property is not accessed in the view ... its getting reset to false. Is there any reason for the same?
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Oct 27, 2010
I am totally a new bee in asp.net mvc. Let me now explain my issue. I have a strongly typed view which inherits from a view model Document. I want to have a partial view in that view itself. My code for this purpose is :
<%@ Page Title="" Language="C#" MasterPageFile="~/Views/Shared/Site.Master" Inherits="System.Web.Mvc.ViewPage<HexsolveMVC.Models.Document>" %>
<asp:Content ID="Content1" ContentPlaceHolderID="TitleContent" runat="server">
DetailsDocumentTemplate
</asp:Content>
<asp:Content ID="Content2" ContentPlaceHolderID="MainContent" runat="server">
<div>
<div>
<div>
2.4</div>
<div>
Published</div>
<h1>
Document Title: <span>
<%=Model.DocTitle %></span><span><a href="#">[ Edit ]</a></span></h1>
<ul>
<li>
<label>
<span>*</span>Created Date:</label>
<span>
<%= Model.DocCreatedDate%></span></li>
<li>
<label>
Status:</label>
<span>.................................
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Aug 1, 2010
I have a very weird thing happening. I have two databases that have exactly the same tables but different database names on the same virtual machine, but in different instances of SQL Server. For some reason, when using one of them, it will save to the other. In debug, looking at my connection string..I have verified that it is correct, yet when I allow the save, I look in the table and it isn't there, it is in the other database that is in a table with a completely different name and in a different instance of SQL Server.
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Feb 12, 2011
I've been watching a video on Scott Hanselmnn teaching MVC 2 tricks/tips. He mentions how MVC 2 by default uses ASP.NET Web Forms view engine to render the output of the views; he mentions that the web forms view engine is a little slower than it could be for MVC 2 since it generates a control tree and then outputs the HTML to the page (I hope I said that right).
I was wondering what he meant by web forms generating a code tree before outputting the HTML to the page. Does anyone have insight on the view engine of Web forms and the steps of the rendering process works for ASP.NET and MVC2?
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May 19, 2010
I'm building an MVC 2 RTM app, and I want to be able to share my model across applications. I'd *like* to be able to implement it like:ASP.NET MVC2 app (holds Views and Controllers)Class library to hold Model(s)WCF app to handle the data transactions with the models via different data stores across apps I had the MVC app working fine, but I wanted to abstract the data stuff and be able to work with the model across apps through the WCF site, so I created a class library project and moved all of the Models classes into that and set-up a WCF app, then added project references to the MVC and WCF apps that point at the class library. The idea was I can create services that take and return objects from the model via method calls across apps. It appears that everything's wired up correctly in the MVC project, so I'm passing the objects stored in the Models class library between controllers and views and everythig is compiling just fine, but for some reason the data is not being passed back from the views to the controller on POST -- all of the properties in the classes are null or empty.
When I debug the app, I can see that the values are stored in the model data dictionary but not the model object itself. What am I doing wrong? Am I on the wrong path, or missing something obvious (to some)?
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Sep 1, 2010
Is it possible, inside a Custom Model Binder, to fire "something" that "says" the value is invalid so it gets handled by validation part?
Basically, I am getting an exception when the value for the property is invalid.
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Jan 10, 2011
I made a few changes to the DB in SQL server management studio then right clicked on the .edmx doc to get it to update. That seemed to work fine but when i compiled the app everything that referenced the EF seems to be broken.The Error list now contains the below error for all classes that used it.
The type or namespace name '' could not be found (are you missing a using directive or an assembly reference?)
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Mar 11, 2010
I have an issue of static variable in an asp.net application. Let's say I have a server with 8 CPUs running windows 2008 R2 hosting an asp.net webbsite, nothing fancy here, no funny configuration.
Is the following statement true? at any single time, there's one and only one process is running and accepting requests, even in the recycling stage. The reason I am asking is: I have a static field in my class, and I want to make that's the only static instance in the website. I've heard in some circumstances, IIS is recylcing your application, and it will start a new process, but the old process is still working, thus I will have 2 static instances in memory, which defeat the purpose of static field.
One step further, let's assume there might be 2 instances in memory, can I assume there are at most 2 instances at any single time? And can I assume once the second instance is up, the first instance will NEVER accept new requests?
Another question: Recently I have a problem with an applicationdomain concept. Looks like if an application domain causes a memory leak, unload the domain will not release the memory (Umanaged leak). So to what extent Application Domain is isolated?
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Dec 28, 2010
I am trying to make a post that should use the Default Model Binder functionality in ASP.NET MVC 2 but unfortunately I can't get through. When I click on the checkout button I populate a form dinamically using jQuery code and then submit this form to the server. This is the form that get submitted
<form action="/x/Order/Checkout" id="cartForm" method="post">
<input name="__RequestVerificationToken" type="hidden" value="UDjN9RdWheKyWK5Q71MvXAbbDNel6buJd5Pamp/jx39InuyYIQVptcEubIA2W8DMUzWwnZjSGkLspkmDPbsIxy8EVuLvfCSZJJnl/NrooreouptwM/PaBEz2v6ZjO3I26IKRGZPqLxGGfITYqlf8Ow==">
<input id="CustomerID" name="CustomerID" type="hidden" value="1">
<input id="FirmID" name="FirmID" type="hidden" value="2">
<input type="hidden" name="CartItems[0].ServiceTypeID" value="1">
<input type="hidden" name="CartItems[0].Quantity" value="1">
<input type="hidden" name="CartItems[1].ServiceTypeID" value="2">
<input type="hidden" name="CartItems[1].Quantity" value="1">
</form>
This is the jQuery code that handle the submit event for the form
$("#cartForm").submit(function (event) {
event.preventDefault(); var form = $("#cartForm");
var panel = form.parent(); panel.parent().block();
$.ajax({ type: "post", dataType: "html",
url: '<%: Url.Content("~/Order/Checkout") %>',
async: false, data: form.serialize(),
success: function (response, status, xml) { panel.parent().unblock(); },
error: function (response) { panel.parent().unblock(); } }); });
This is the controller action that should be get called
[HttpPost]
[ValidateAntiForgeryToken]
public virtual ActionResult Checkout( CartModel cart ) {
} And finally this is the CartModel class involved
public class CartModel : BaseModel{
public int CustomerID { get; set; }
public int FirmID { get; set; }
public List<CartItemModel> CartItems { get; set; }
public CartModel() { CartItems = new List<CartItemModel>();
} } public class CartItemModel : BaseModel
{ public int ServiceTypeID { get; set; }
public int Quantity { get; set; } }
But the default Model Binder does not bind the web form data to a CartModel class. Using Fiddler I have been able to see that the data sent to the server is correct as you can see from the following snapshot.
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Aug 2, 2010
when I use Html.HiddenFor( model => model.OwnerId ) to create a hidden field, the value assigned to that field is zero. When I use <input type="hidden" value="<%: Model.OwnerId %>" /> to add the hidden field to the form, the value is assigned correctly.
Why would Html.HiddenFor( model => model.OwnerId ) not get the correct value from the Model object? Am I supposed to load model state somehow separate from returning the model object from the action method? Here is the view:
[Code]....
The Create action method is relatively straight forward.
public ActionResult Create( ... )
{
ViewStockItem item = new ViewStockItem();
item.ActionCode = ActionCode.Add;
if (item.OwnerId == 0)
item.OwnerId = 7;
BookOwner owner = db.BookOwners.Single(c => c.OwnerId == item.OwnerId);
item.OwnerName = owner.OwnerName;
return View(item);
}
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Dec 15, 2010
I've been used to decorating data model classes with data annotation attributes, but the purist in me baulks slightly at including purely presentational attributes such as display format here. I am, however, quite happy to keep validation centric attributes here. One good reason I have to continue keeping all annotations etc. in the data model is that my view model aggregates data model classes, e.g.
my ViewModelBase.DetailItem<TEntity> property in the view model is just a reference to an entity class in my data model. If I wanted to move presentational annotations to the view model, I would have to quite radically revise my design to one where I duplicate data model properties in my view model and use an object mapping tool to populate view model objects based on data model objects.
[code]....
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May 4, 2010
Say I got a domain model as follows: (and my repository expect an instance of this object)
[Code]....
And a view model (which my views are based on)
[Code]....
At the moment I got it like this and have my controller action manually create a new Person object from the PersonModel object before passing it on to the repository, which does not feel right.
So I tried to have PersonModel inherit from Person and pass that to the repository (also tried casting the PersonModel to a Person object first), but that don't work out.
What's the right way to have PersonModel automatically cast to Person? I want to keep this logic as my current structure allow me to keep things really loosely coupled, with the repository layer not having a clue how it's being used.
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Oct 12, 2010
I have recently started working on ASP.NET with MVC 2 framework, and I am facing following difficulty in validating my data,
Scenario:
In my application the view (ASPX) is divided into tabs (jQuery) and each tab's content is ViewUserControl (ASCX). The main model for the view has collection of sub models for individual tabs. I use RenderPartial method to render view user control.
[Code]....
And the user control (Tab1.ascx) refers the specific model for it,
[Code]....
Now if in my Tab1Model if I put following validation
[Code]....
In the controller ModelState.IsValid is always indicates TRUE. How do I override the validation behavior such that it as well looks the items in the collection member (which holds sub models) as well.
<%= Html.ValidationMessage("FirstName") %>
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Mar 15, 2011
I am a newbie in mvc3 and i'm wondering how to use attribute like [Display(Name="")] for model that comes from an entity data model that I provide im my "Model" folder in my mvc3 project.
I didn't provide a .cs class for each of my database tables .
other words, I want the controller class render a edit form for me like :
First Name:--- instead of : fName:---
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Jun 2, 2010
I have been reading about different model for development
model view control mvc
model view presenter MVP
Model view view model MVVM
i belive MVC has two big Advantage over webform 1) TDD 2) More control on HTML
MVP is bit variation in mvc model. rapid development as well as 1) TDD 2) More control on HTML (correct me if i m wrong) see the below link
[URL]
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Jul 15, 2010
what is crosspage posting?
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