MVC ViewData Not Rendering In View
Jul 16, 2010
I have the following code in my post action method for Edit.
JobCardService.Update(viewData.JobCard);
var js = new JavaScriptSerializer();
ViewData["Notifications"] = js.Serialize(new {NoteificationType = "Success", Message = "The installtion was successfully updated"});
return RedirectToAction("Index");
However, on the client, ViewData is null/empty, i.e. this client code
var notifications = eval("<%= ViewData["Notifications"]%>");
renders as
var notifications = eval("");
I'm sure I'm doing something small wrong.
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Sep 18, 2010
Have seen in the MusicStore PDF witch can be sownloaded from [URL], That is it possible to render additional vew data. so: I have my ViewDataModel
[Code]....
I have the Model:
[Code]....
In my controller, I add the data into the model:
[Code]....
And I try to render it with Html.EditorFor.
[Code]....
My problem is here, that it only render Keyword
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May 3, 2010
making my first steps with asp.net mvc and I actually create a (very) small website.I have 1 controller : TasksController1 view : Tasks/Index.aspx1 Partial View : Tasks/AvailableSorting.ascx In my controller I have 2 methods :
[Code]....
In my Tasks/Index.aspx, I add my partial view (<% Html.RenderPartial("AvaliableSorting"); %>)
That sounds simple. But, It just doesn't work : the Index return a list of Task and the parial view (should) return a list of string.The index.aspx works perfectly, but the partial view doesn't get the right model ! he gets the model of the Index page (list of Task).
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Oct 27, 2010
"When a partial view is instantiated, it gets its own copy of the ViewDataDictionary object that is available to the parent view. The partial view therefore has access to the data of the parent view. However, if the partial view updates the data, those updates affect only the partial view's ViewData object. The parent view's data is not changed."Is there a common way around this? For instance I have a View containing two Partial Views (User Controls) that source the same data from the Parents ViewData. The first Partial View is able to update (add/delete) certain data from the Parents View Data, however the second Partial View sources the same data but obviously isn't reflecting the changes owing to the above MSDN statement.
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Jun 29, 2010
I created a base Controller for the other Controllers to derrive from, and in that controller I overrode the OnActionExecuting method so that each time any Controller executes a method, I can run some code. In that code I added a value to ViewData, and in the Master View I want to either display certain items or not based on the value of the ViewData item set. The problem is, once I get to the Master View, the ViewData doesn't have anything in it. I am not sure what I'm doing wrong.
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Feb 13, 2010
I like ASP.NET MVC, because I like to have direct access to my web site's structure. However there's 1 thing that I don't like.
In Ruby on Rails to send data from Controller to View is really easy:
# Get a user in controller
@user = User.first(:id => 1)
# Display him in a view
<%= @user.id %>
In ASP.NET MVC it's much harder
// Controller
User user = new User(1);
ViewData["user"] = user;
// View
<% User user = (MyNamespace.User)ViewData["user"]; %>
<%= user.Id %>
With this ViewData thing all benefits of static languages go away, and we waste time boxing/unboxing objects.
P.S. Don't tell me to use Model object, because this is also true for other variables like integer.
And another question:
I'm trying to implement a comfrtable access to data. Since I can't use LINQ to SQL as I use Postrgresql, I have to do it on my own. I'm tired of direct SQL queries, so I'm trying to implement something like this:
User user = User.Find("first_name" => "Bob");
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Feb 16, 2011
I need to display an error message in the view when there's an error in rendering the partial view in that View.
How can i handle the exception while rendering partial view and display the error message in the view?
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Feb 13, 2011
I want to pass a message from the controller to a view using Viewdata. Here is my code:
public ActionResult Create(FormCollection createPage)
{
try
{
......................
ViewData["Message"] = "Success - rec added!!!!" ;
return RedirectToAction("Index");
}
catch (Exception e)
{
ViewData["Message"] = "Exception: " + e.ToString();
return RedirectToAction("Index");
}
On my View I have:
<asp:Content ID="Content2" ContentPlaceHolderID="MainContent" runat="server">
<h2>::><%: ViewData["Message"] %><::</h2>
<h3>==><%= ViewData["Message"] %><==</h3>
<p>
This is Index.aspx page in Controller folder
</p>
</asp:Content>
I am getting result with empty ViewData["Message"]
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Oct 26, 2010
ViewData["Title"] is accessible only the current view? or it is possible to access other views also?
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May 11, 2010
i need to pass multiple viewdata to a partial view from controller
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Dec 28, 2010
on the controller, i am passing my string array to the view using ViewData.
[Code]....
on the view, i cated the viewdata to string array, and made a select list.
[Code]....
but if i run the website, i get this error :
[Code]....
View 5 Replies
Feb 7, 2011
I'm trying to pass a list of data from the column CICodeID in my database where the currently logged in users name matches the UserId.
Here is my controller: [Code]....
And here is my view: [Code]....
This is the exception I'm getting at run time:"Cannot compare elements of type 'System.Linq.IQueryable`1'. Only primitive types (such as Int32, String, and Guid) and entity types are supported."
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Jun 25, 2010
I am trying to render a partial view and i can not get it to work. Probably i am missing something trivial, because what i am trying to do is really simple.
I have two controllers: NewsController and CommentController. In the "Details" view of the NewsController i'd like to render the partial view "List" of CommentController. So in Details.aspx i have this line:[Code]....
However, this line throws an excpetion:
"The controller for path '/News/Details/e4243192-55ea-4cfb-b8d3-9714cca4ff08' was not found or does not implement IController."
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Aug 17, 2010
I have a table, there is a column for "edit links" - i'd like to render a partial view under the table via JQuery - but i think i'm missing a step:
Heres the html:[Code]....
I hardcode the link and make it call the "editCloset" js function, hopefully thatll call my Controller, thatll build the ViewModel, and return the View that uses it - so it can be rendered in the PartialView contained in div id="Slots"Right now - im not able to get into the controller, so i missing something i think Heres the controller:
[Code]....
And heres the partial view "_ManageSlots"
[Code]....
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Nov 25, 2010
Just to get it work, I got a controller action that make use of a switch statement to decide which partial view to render, based on one of the members of the model passed in. (Written by someone else for what it matter...I'm just cleaning up)
The viewmodel is overcomplicated, but that's not my decision right now and just have to live with it.
All partial's get rendered passing the same viewmodel, just a different partial get called.
[Code]....
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Nov 29, 2010
I'm trying to render a partial view as a string so it can be returned as HTML to a jquery ajax call. After a lot of searching I found this code.
public string RenderAsString(string viewName, string modelName, object model)
{
// Set up your spark engine goodness.
var settings = new SparkSettings().SetPageBaseType(typeof(SparkView));
var templates = new FileSystemViewFolder(Server.MapPath("~/Views"));
var engine = new SparkViewEngine(settings) { ViewFolder = templates };.......
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Nov 24, 2010
What is the best way to build a progress page? In short, I want a user to complete a series of "setup steps" and hit a "Start" button. I would like them to be immediately redirected to a "Progress" page that will show them the progress of each step. In my case these would be: Shutdown device, copy file, Start device.
My approach so far is to build a Progress View page and use partial views. Here is what I have so far. I would like the Progress page to show up right away even if the ShutdownStatus View has not finished rendering. At some point, I plan on including a progress bar but right now I'm just curious as to how I can show the Progress page immediately then show each partial View as it completes.
[Code]....
<asp:Content ID="Content2" ContentPlaceHolderID="MainContent" runat="server">
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Nov 25, 2010
I am quite new to MVC and am gradually overcoming all my 'but WebForms can do that' issues but I still have one. I wish to have components which I can deploy into an Area in order to keep things nice and tidy. This area will have a bunch of re-usable partial views like this. MyArea/Views/Shared/MyAreaControl.ascx I can render this MyAreaControl partial view fine in other Views inside that area but it fails when I try to render it from a not inside the area (e.g. view in the root of the site). I am essentially using this syntax
<% Html.RenderPartial("MyAreaControl", new { area = "MyArea" }); %>
which seems to only look for this partial view inside the root Views folder, not the area one despite me specifying the area. Is this a restriction of the system, a bug - or am I just doing it wrong. ADDENDUM: Turns out it appears to be an assembly issue. My controller is found in a separate assembly from my MVC Application. Doing a bit of fiddling with moving my control inside and outside of the area and the separate dll I came to the following confusion:
- If partial view is in its own area and the controller is part of the MVC application dll - I can render it from my home view
- If partial view is not in its own area and the controller is part of an external dll I can render it from my home view
- If partial view is not in its own area and the controller is part of the MVC application dll - I can render it from my home view
- If partial view is in its own area and the controller is part of an external dll I CANNOT render it from my home view
The controller for path '/' was not found or does not implement IController.
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Dec 16, 2010
I have the following markup in a 'content' page. Without the Render call, nothing renders, and with the Render call, the grid renders as the first element in the whole page, not inside the 'content' section defined by my view:
@using Telerik.Web.Mvc.UI
@model Outdoor.Mvc.ViewModels.OutdoorSite.SiteList
@{
Html.Telerik().Grid(Model.ItemList).Name("Site Grid")
.Columns(columns =>
{
columns.Bound(o => o.SiteId);
columns.Bound(o => o.Name);
})
.Pageable()
.Sortable()
.Render();
}
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Jan 20, 2010
i am using the combobox ajax control i in design time i am having an error:
there was an error rendering the control. Request is not available in the context.
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Apr 27, 2010
<%#ViewData["id"] %>
<h2>MarkerDetail</h2>
<script language="javascript" type="text/javascript">
$(document).ready(function(){
$.ajax({
url:"/Marker/MarkerDetailPartial",
data:"",
success:function(result){
$("#ReplyDetails").html(result);
},
error:function(result){
}
});
});
</script>
<div id="ReplyDetails">
</div>
& i want to send Id only By this Ajax
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Mar 16, 2011
I have a little MVC 3 challenge that I am trying to overcome.Here is my scenario:I have a controller called PersonController.cs with 5 methods:Add Add (post) Edit Edit (post) PopulateName(string EmailAddress) - POST
I have a viewdata class called PersonViewData.cs with 3 pieces of data:
Email FirstName LastName
I have 2 PageViews (Edit.aspx and Add.aspx)I have 1 PartialView (Details.ascx) - with 3 textboxes (Name, Email, Phone)I want to reuse this partial view in both the Edit.aspx and Add.aspx Views.
The user should NOT enter the First Name/Last Name - rather, once the user has entered the email address (OnChange of Email textbox), the First Name/ Last Name of person should be populated. This is done using the PopulateName(string EmailAddress) controller method. Meaning, I have an AJAX Form inside the partial view
Then once all 3 fields are populated. The user should be able to submit either the Add or Edit HtmlForm.
Code of Edit.aspx:
[Code]....
Code of Add.aspx:
[Code]....
The main issue is as follows:I have an AJAX Form inside the partial view. Since now we have a PageView Form and nested PartialView AjaxForm - Form within a Form - the Browser has a hard time with this concept. In fact, when a person enters an email address, the frmEdit/frmAdd gets submitted.
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May 3, 2010
i need to show project information by value of dropdownlist.by using this code i get a list of data to drop down list.now how can i access the first data in ViewData(or record)
[Code]....
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Jul 22, 2010
Does anyone have any idea why the code below doesn't give me any value but instead gives me "System.Web.Mvc.SelectListItem"? If I don't do a foreach but instead substitute the ViewData with this
<%= Html.DropDownList("PersonOnCallCheckBoxList") %>, I get the correct value.
foreach (var person in ViewData["Person"] as IEnumerable)
{
%>
<input type="checkbox" value="<%= person %>" /><%= person %><br />
<%
}
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Mar 3, 2011
I'm new to .Net development, and now are following NerdDinner tutorial. Just wondering if any of you would be able to tell me What is the differences between ViewData and ViewModel(all I know is they are used to pass some form of data from controller to view) and perhaps tell me on what situation should I use ViewData instead of ViewModel and vice versa
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