MVC :: Updating Model With IEnumerable?
Apr 19, 2010
I'm trying to update values I have stored in an IEnumerable using UpdateModel, but it isn't reflecting the changes when I step over it in Debug.I also tried upating it using a foreach loop and updating the values in each object T within the IEnumerable<T>. The values are changed at the object level, but it seems that the value of the object in the IEnumerable isn't being changed.I was looking at IEnumerable<T> and didn't see a way to update it... I'm thinking that I might have to assign the updates to some other data structure, then convert it to an IEnumerable or something before I try to save my repository
View 6 Replies
Similar Messages:
Nov 23, 2010
How I can bind in my ActionResult IEnumerable property in Model.
Objects:
public class Project
{
public int ProjectID {get;set;}
public IEnumerable<Category> Categories {get;set;}
}
[Code]....
View 15 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
Feb 6, 2011
Having alot of startup issues with MVC - I really like the idea behind it all, and the way it works, but still lacking some essential skills, WebForms is much more natural to me. Just to simplify my problem.
I have a "Blog" page with "Posts" which needs a "Comments" systems. In my blog view "/Post/Details/{id}" I'm showing all data for the "Post" model. So at the bottom I need to loop and display all comments, this is fine:
[Code]....
Now I want a form/input where you can submit a new comment. This is the problem, how do I implement that, tried everything! How do I catch that form submit in Details action in my PostController?
View 8 Replies
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)?
View 2 Replies
Jun 9, 2010
i was looking at one example on msdn [URL], but i can't really understand it.
View 1 Replies
Mar 14, 2010
refer me few article which describe the basic use of IEnumerator and IEnumerable,
View 3 Replies
Mar 6, 2011
I have function it will return IEnumerable as.
IEM = myclass.getdata("name");
How to read the data in IEM as it consists of many columns. I have to display the values into labels and textboxes.
View 3 Replies
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.
View 1 Replies
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?)
View 4 Replies
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?
View 1 Replies
May 1, 2010
I am using LINQ for data connectivity and have made class which return me the result set into presentation here is the syntax:-
public List<ClsDermaInvestigation> MthdisplayInvestigation()
{
List<ClsDermaInvestigation> lstinvst = new List<ClsDermaInvestigation>();
ISingleResult<USP_Patient_Dermatology_InvestigationResult> investresult = objderma.USP_Patient_Dermatology_Investigation(PatientID, RepDate, Hb, TLC, F);
foreach(USP_Patient_Dermatology_InvestigationResult rel in investresult)
{
ClsDermaInvestigation objinvest = new ClsDermaInvestigation();
objinvest.Albumin = Convert.ToDouble(rel.Albumin);
objinvest.ALP = rel.ALP;
objinvest.ANA = rel.ANA;
objinvest.Date = rel.date;
lstinvest.add(objinvest)}return lstinvest}
This list is returning me the result.It works fine but in 1 case am using the same list to bind my Date dropdownlist.
//aspx.cs code
List<Dermatology.ClsDermaInvestigation> objlstinvest = objinvest.MthdisplayInvestigation();
//Array s = objlstinvest.to
drpDate.DataSource = s;
drpDate.DataTextField = "Repdate";
drpDate.DataValueField = "Repdate";
drpDate.DataBind();
But it throws an error that list does not conatin a property with "Repdate";. How can i bind this list with dropdownlist?? Can i convert it into some type so that i would be able to bind it??
View 2 Replies
Apr 1, 2011
table1 row = _db.table1.FirstOrDefault(r => r.ReferenceID == refNumber);
Is there anyway to cast row to IEnumerable?
((IEnumerable<table1>)row) - does not work
View 1 Replies
May 18, 2010
I've read some articles about this but for some reason they're just not doing it for me. I'd like to understand the difference between
IEnumerable<string> myList and List<string>myListToo
View 7 Replies
Jun 29, 2010
I have IEnumerable object with value1 and value2. value2 is an array and value1 is string. I want to databind this object to Listview like that. So both value1 and value2[0] (always first item in array) could be accessed via <%# Eval("value1") %> and <%# Eval("value2") %> .
How to write expression to handle both items ?
ListViewItems.DataSource = f.Items.Select(t => t.value1, t.value2[0]);
ListViewItems.DataBind();
View 1 Replies
Mar 17, 2010
I have an IEnumerable< T> which is declared on the page like this:IEnumerable< Person> person;When the page postsback, the person list is null. How can I retain the values of person list without declaring it as static? Sr. devs in my company say that you should not declare the list as static.
View 2 Replies
Feb 10, 2010
Dim list As List(Of DataRow) = dt.AsEnumerable().ToList()When I compile I get the error:
'AsEnumerable' is not a member of 'System.Data.DataTable'.I added Imports system.data.datatableextensions to the file..This code works when I run it on a asp.net project But when I use the same code in Website it returns the above error..Can anyone help solve this error.
View 2 Replies
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.
View 1 Replies
Feb 3, 2010
i'm using MVC 2, RC, and i have a controller method:
[Code]....
and i have an <input type="file"../> in my form. during post, however, the files parameter is null.
View 9 Replies
Mar 31, 2010
My controller has a member that returns a JsonResult object, it is coded as per below. The problem is that Json(users) only returns the data from IEnumerable (MembershipUserEx objects) and I also want the data from the public Properties of MembershipUserExCollection as well. Is there a way to do this? I guess I am looking for the Json object to look something like this pseudo object:
results = {
pageIndex:0,
pageSize:50,
[code]...
View 1 Replies
Feb 19, 2013
Why it's not possible to cast a SiteMapNodeCollection (eg. SiteMap.CurrentNode.ChildNodes) to an IEnumerable<SiteMapNode>? I was wanting to do some filtering of the collection via LINQ, but this might not be possible?
The MSDN page says it implements IList, ICollection, and IEnumerable, so I don't see what the problem is.
View 4 Replies
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);
}
View 4 Replies
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]....
View 2 Replies
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.
View 1 Replies
Jun 2, 2010
I have a DetailsView control which gets data from a IEnumerable custom class. But I can't get updated values from the control so I can process to update them manually in the database. How can I do that?
View 2 Replies
