MVC :: Error In View While Looping Trough IQueryable(of T) Entity From A SQL View?
Jan 18, 2011
when I'm building a menu in a view I get following error when code reaches <% Next item%> :
System.InvalidOperationException was unhandled by user code
Message=The value of a property that is part of an object's key does not match the corresponding property value stored in the ObjectContext. This can occur if properties that are part of the key return inconsistent or incorrect values or if DetectChanges
is not called after changes are made to a property that is part of the key.
Source=System.Data.Entity
My view: (its a userview)
[Code]....
My Model
[Code]....
My Datasource
[Code]....
I use this way of looping frequent the only thing is that this is that this entity has a view as source and not a table, so I think it has to be related with that.
View 3 Replies
Similar Messages:
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?
View 3 Replies
Feb 3, 2011
I want to create a view that draws from mutiple sources of data and creates a 'summary' view.This would include:An author (data source A) A list of the authors latest writings (data source B) A list of topics the author writes about (data source A)I notice I cannot pass into ...return View(author, articles, topics) from the controller.It seems you have to pick one.I want to construct my View from multiple partial views for each type.Not sure I am trying to do this the correct way.
View 6 Replies
Apr 1, 2011
i am working on MVC 2.0 , i would like to use gridview and list view as i am trying to display the product page for a shopping cart solution.
can i use them if yes then how and if not what could be the alternative solution to display product with shopping cart button and how can i pass parameter to display product when somebody click on the product view more detail.
View 5 Replies
Aug 31, 2010
I have an EditTask View for editing the following properties for a Task that I am modeling.
[Task Name]
[Project Name]
[Assigned Employee]
Task Name and Project Name are just simple text boxes.
I want Assigned Employee to be a selection from all the available Employee's currently in the database. Dropdownlist is not really an ideal option because there could be hundreds if not more possible employees.
I'm thinking a link to show a select employee grid listing in either a popup or another page where filtering can take place (b/c employee has other properties such as Dept) and the selection is made and the EditTask view is updated would be ideal but not sure. I'm new to ASP.NET MVC so I'm a little lost on where to start to implement this.
What is the best way to handle this UI scenario in ASP.net MVC?
View 1 Replies
Mar 13, 2011
EDIT: This question is vague and will likely be of little use to anyone. I am awarding internet monies to the gentleman below whom "helped" me.Sorry that the title is a little vague. I am still new to asp mvc & EF. Here is my issue. I have a DB somewhat like this.
Employee
- ID
- Name
- Address
EmployeeJob
- EmployeeID
- JobID
- StartDate
JobTypes
- ID
- JobName
I want a create form that will show all the Employee fields as well as a list of JobTypes for the users to be able to select. Then I will post the results back to the controller and update the DB. I have started looking into custom viewmodels, but am still unsure of exactly how to put that together and get it to work.
View 1 Replies
Aug 5, 2010
I need to pass a list of Entity Objects from Controller to View but not put it in the Model context. It is the users homepage, but I am putting a list of alerts on the users home page(somewhat like facebook). So I need the User Context as the Model I pass but need to pass the Alert model as well so I can show the list of alerts.. How would I do that? The code below is what I have so far..
UserController
[Code]....
UserRepository
[Code]....
View 1 Replies
Mar 1, 2011
I've been at this same question in different forms now for a while (see e.g. Entity Framework and MVC 3: The relationship could not be changed because one or more of the foreign-key properties is non-nullable. ), and it's still bugging me, so I thought I'd put it a little more generically:
You have an entity object (using Entity Framework), say User. The User has some simple properties such as FirstName, LastName, etc. But it also has some object property lists, take the proverbial example Emails, to make this simple. Email is often designed as a list of objects so that you can add to that object properties like Address and Type (Home, Work, etc). I'm using this as an example to keep it generic, but it could be anything, the point is, you want the user to be able to add an arbitrary number of these items. You should also be able to delete items (old address, or whatever).
Now, in a normal web page you would expect to be able to add these items in the same View. But MVC as it seems designed only makes it easy to do this if you call up an entirely new View just to add the address. (In the template for an Index View you get the "Create New" link e.g.).
I've come across a couple of examples that do something close to what I mean here:
[URL]
and
[URL]
The problem is, although the sample projects on these sites work fine, with mock model objects, and simply lists (not an object with a child list), it's a different thing if you actually want to do something with the posted information - in my case save to database through the Entity Framework model. To adapt these cases to that, all of a sudden I'm in a maze of intricate and definitely not DRY code... Juggling objects with AutoMapper and whatnot, and the Entity Framework won't let you save and so on (see above link if you're interested in the details).
What I want to get at is, is it really possible that this is such an uncommon thing to want to do? Update a child collection in the same View as the parent object (such as the email addresses in this case)? It seems to me it can't be uncommon at all, and there must be a standard way of handling this sort of scenario, and I'm just missing it (and no one here so far has been able to point me to a straighforward solution, perhaps because I made it too abstract with my own application examples).
View 1 Replies
Aug 19, 2010
When adding a stored procedure into the Entity Data Model I can select whether the procedure returns a scalar, a (new) complex type or one of the entity types I already defined.I mean assuming I have a view like this
CREATE VIEW FilteredFoos as SELECT Foo.* FROM Foo join ... WHERE ...(that is a view that implements some involved filtering, but returns all columns from one table) how do I add it to the project so that I can use the entity set, but get the Foo objects, not some new FilteredFoo objects.
var foos = myDB.FilteredFoos.Include("Bar").ToList();
foreach (Foo foo in foos) { ...
View 2 Replies
Feb 14, 2011
have a web in which there are different areas i have a 1 admin which manage all things like news, Events, Notices, Logs, Forums, Publications etc.........i want assign user rights that select user view only Noticesselect user view only Logsselect user view only Newsetc....
View 7 Replies
Apr 4, 2011
I have looked all over for elegant solutions to this not so age-old question. How can I lock down form elements within an ASP.Net MVC View, without adding if...then logic all over the place? Ideally the BaseController, either from OnAuthorization, or OnResultExecultion, would check the rendering form elements and hide/not render them based on role and scope. Another approach I have considered is writing some sort of custom attributes, so as to stay consistent with how how we lock down ActionResults with [Authorize]. Is this even possible without passing a list of hidden objects to the view and putting if's all over? Other background info: We will have a database that will tell us at execution time (based on user role/scope) what elements will be hidden. We are using MVC3 with Razor Viewengine. We're utilizing a BaseController where any of the Controller methods can be overridden.
View 1 Replies
Nov 30, 2010
When I am creating Strongly Typed View I get lots of Classes in View Data Drop down. Classes like Automapper, ninject, Interface..., latebound... Due this its very hard to find my project classes. Is there any way to restrict dropdown to only display my project classes?
View 1 Replies
Sep 7, 2010
speed Performane i create a web site but it very slow run i use tree view and grid view but i do it run very fast
View 1 Replies
Sep 30, 2010
I'm using Visual Studio 2008, and when I select/highlight something in design view and switch to source view it does not highlight and scroll to the selected item. This makes it really hard to change stuff in source view, and it's very inconvenient at worst
View 2 Replies
Dec 11, 2010
I'm working on a page that uses a master page. In the master page, I have a drop-down and when a value is selected I generate an evenIn the web page, I have this statement "Addhandler Master.FilterChanged, AddressOf FilterChangedFromMasterPage"Everything works fine, and can edit the page as much as I want, but only with the Source view - because if I look at the design view, the entire MainContent section is reduced to this error; "Error Creating Control- MainContent / Object Reference not set to an instance of an object"But if I debug it locally, or FTP it to the server, it works just fine!
View 1 Replies
Apr 7, 2010
When using the "add view" dialog in vwd is there a common practice for presenting any primary key fields as readonly to the user in the view?
By default it appears the user could change the key field value (as it is presented in a textbox) and overwrite data for that record for which the key was accidentally changed to.
Do we have to store the original record's key and then make the key presented as a label and then on the update subtitute the original key value back in for the record? Or is there something simpler?
View 3 Replies
Oct 20, 2010
i have the following problem concerning the index::
my source code::
[Code]...
the problem is appeared when i have added the pager to my list view ,,i have out of range for index exception ... how to determine the page iam in and specify the right index either i use list view or grid view or other such controls..
View 1 Replies
Mar 15, 2011
I have an entity object as model input in my view. Not sure if it's the best approach, but I use the object references to get values from a related object.Let's say I've got a car entity and a manufacturer entity.Here's how it would look in my view
[Code]....
I've get a nullreferenceexception where the car entitity does not have a reference towards manufacturer. I'd like to output a " " if no manufacturer exists.
View 4 Replies
Feb 9, 2011
i have gridview , it contains record of productsname field of product table and hyper link, hyperlink named as Detail.
when i click Detail link ,it will show record of that row in another page,means it shows complete fields of table in another page,,
i want to know only that,how detail link will perform,to view only that row record,
View 3 Replies
Sep 8, 2010
Members view (index) that lists members that users can select to show a partial view in the same view with details for the selected memberUses jquery (Ajax.ActionLink) to call a partial view method in the members controller to then load the members detail sectionWorks fine up to here....but I'd like to load the partial view with "member" details for a default or random member on initial load -- ie not through the Actionlink selectionHow do I invoke the partial view method on the initial load?
View 4 Replies
May 17, 2010
I have a view which takes two objects: booking and list of reasons for canceling that booking.I have two classes: clsBooking, clsBookingCancelationReason I can read both objects in my view - no problems there. After I read the objects, I display the booking details and I generate a list of cancelation reasons in the following way:
[Code]....
The code above generates a list of cancelation reasons.How do I pick up the selected ReasonId from the list?
I need to generate a link that will contain the bookingId and the selected reason for canceling the booking.I can get the bookingId out easily since it's stored in the Model...but how do I go about the selected ReasonId?
View 5 Replies
Mar 21, 2010
Split view and design view doesn't work.I installed and uninstalled Office 2003 and 2007 once but there's no office in my computer now.-I have Microsoft Studio Web Authoring Component installed.(12.0.4518.1066)(Uninstalled and installed it twice)-My computer-properties-Advenced system settings-environment variables-system variables-path is;
[code]...
What is the problem,how can i fix it? I tried everything in other posts.
View 5 Replies
Aug 19, 2010
i'm tring to search my table according to id number or the case number then view it in a gridviewbut it work for the first time then after it stop for error
Dim conn As New SqlConnection
conn.ConnectionString = "Data Source=.SQLEXPRESS;AttachDbFilename=C:Program FilesMicrosoft SQL ServerMSSQL10.SQLEXPRESSMSSQLDATATask.mdf;Integrated Security=True;Connect Timeout=30;User Instance=True"
[code]...
View 3 Replies
Jan 27, 2011
Let's say there is a textbox and a dropdownlist in mainview page, these two values are used by three partial views as well. when I use Html.RenderAction to post action to those three partial views, how to pass these two values to those partial views and in those views how to get these two values as a part of a object to send to database.
View 10 Replies
Mar 3, 2011
i am trying to but a menu of links in master page
but they does not appearr
here is the code
[Code]....
View 5 Replies
