MVC :: Display Foreign Key-bound Property From Model View

Apr 17, 2010

but I am new with MVC and database-driven applications.

I hava a table with Cities (ID,Name) and one with Businesses(ID,CityID,Name). The later has a foreign key relationship with the first table.

I used a linq-to-SQL class to create my models.

My problem is that I need to access the City Name(not the ID) when displaying the Business Model View.

How can I do this? if from my controller I call the View passing the auto-generated Business Model, I only have access to the ID.

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MVC :: How To Display Property Of Model On View

Aug 26, 2010

How can I show display property of Model on View.

public class Model
{
[Required]
[DataType(DataType.Text)]
[DisplayName("First Name")]
[code]...

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MVC :: How To Display An Image Property Of A Model In A View

Sep 11, 2009

this is my first post on this forum, and here it comes:I have a Model which has an image property:

[Code]....

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MVC :: Create View With A Model Class With A Lookup / Foreign Key?

May 14, 2009

I am following along with the Contact example [URL], and using my own model. Instead of the Contact class, mine has a foreign key field to a lookup table for "Locations." I have the following code.

[Code]....

When I fill out my Create view, and submit it I get the following error:

There is no ViewData item with the key 'LocationID' of type 'IEnumerable<SelectListItem>'.

[Code]....

I am guessing I need to add a Location parameter to my Post-Create action, so I can assign it to pagerToCreate.Location. but, how do i pass that in from the view, and is there a more auto-magic way?

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MVC :: View Model Property Become Null?

Nov 8, 2010

So I have code as below

public ActionResult Create(AccountClassificationCreateViewModel ACCVM)
{
if (ACCVM.newMtn0130 == null)//Why ACCVM.newMtn0130 is null after [code]...

I wonder why the ACCVM.newMtn0130 become null after RedirectToAction? I already assign with "_ACCVM.newMtn0130 = newMtn0130".

ACCVM._Error didn't become null after RedirectToAction.

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Forms Data Controls :: Display Foreign Key Value In Grid View?

Aug 14, 2010

I have a search button ..The result will be displayed in grid view if the button is pressed .. i am able to do it

But now i want to do like this ..that is my grid view is only displaying the ResultId .. I want to display the ResultName rather than resultID in the table

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How To Return Errors To View From Controller Not Tied To A Specific Model Property

Aug 26, 2010

Curious what the best practice is for returning errors to a view from a controller where the error isn't really a validation error, but more like "user not found" or "service timeout" type of errors. (in ASP.NET MVC2 framework)

I've been adding them to the ModelState's model errors, but that doesn't seem appropriate. (although easy to implement and maintain)

Example - A user tries to log in, and their credentials do not match a known user.

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C# - MVC View Model Text Data Lost After The Post - Display Them In The Case Of Failed Validation?

Nov 12, 2010

I've got a view model that has some text properties. And I use Html.DisplayFor to display them on the screen. But those text data won't be post back, so in the case of failed validation, the returned view won't have those data. How do I handle this kind of situation?

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Model View Control Versu Model View Presenter

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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MVC :: Creating Foreign Key In Model Classes?

May 31, 2010

I am trying to create a relation between 2 of my model classes. I have separated my Model classes to be in their own project "Domain Model" and the application exists in the "WebUI" project.

I have 2 models.... SupportIssues and Users....

SupportIssues has a column UserID which is also a primary key in the Users table.

I want to create a relationship where one user can have many support issues.

I just can figure out how to do this?

Here is a snippet of my supportIssue.cs class:

[Code]....

How can i link UserID to my User.cs class?

Is it anything to do with the [Associate] tag?

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MVC :: How To Use DropDownListFor With Model Binding For Foreign Key Column

Dec 18, 2009

I have an edit MVC view page that is built up with the following

<%= Html.DropDownList("PatientID", (SelectList)ViewData["Patients"]) %>

I want to use Html.DropDownListFor, but it doesn't work because it builds up the select list with the name "Patient_PatientID" or "Patient.PatientID" and that then fails in the update.

The controller sets up the following

ViewData["Patients"] = new SelectList(scheduleRepository.FindAllPatients(), "PatientID", "Lastname", appointment.Patient.PatientID);

I can save with this code

Appointment appointment = scheduleRepository.GetAppointment(id);
appointment.PatientReference.EntityKey = new EntityKey("SimpleScheduleEntities.Patients", "PatientID", Int32.Parse(collection["PatientID"]));
scheduleRepository.Save();

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DataSource Controls :: Primary Key - Foreign Key Join In Ado.net Entity Data Model?

Dec 23, 2009

I am using Entity Data Model in my web application in VS2008 sp1 and SQl 2008 db

I have two tables

[code]....

Relationship Exists between this Two tables like ErrorType and ErrorType_ID

i have Create entites and all .

Using Sql i am able to Join this tables

Select E. [Error_Code], E.[Error_Type] , ET.[ErrorType_Name] ,E.[ErrorDetails]

From [ErrorCodeDetails] E Join ErrorTypeDetails ET ON E.Error_Type=ET.ErrorType_ID

but using ado.net Entity data model how to do it.

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Forms Data Controls :: Bound Parent Table's Selectedvalue To The Child Table's Foreign Key When Insert?

Oct 20, 2009

I have this problem for the whole day. In my page, I have a gridview for the User Account table (parent table), below that I have a formView for the Users Project table (Child table which has the Account table's PK - UserId). Both tables are mapped in a dataset, and each of them has an objectDataSource inherited by the gridview and formView, However, when I try to insert new record to the child table , the UserId did not pre-set to the gridview selected value, so it give me error -

You cannot add or change a record because a related record is required in table 'aspnet_Users'

Of cause i know whats the error means, but how do it solve this problem, how to i bound the formview insert's UserId to the gridview's selectedValues when I try to insert ?

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Should Data Annotations Be On The Model Or The View Model

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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MVC :: View Model To Convert To Domain Model?

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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MVC :: Replace A ID Value (a Foreign Key) In A View By Its Value?

Jun 17, 2010

As i start to work with MVC simple things are not so simple. I have a view that renders correctly a single table of my Database (using Entitry framework created automatically by visual from my SQL database).The table show everything including the foreign key and i i seeking for replacing the foreign key by a friendly name of my foreign table.In the controleur i have the following code :

public
ActionResult Index()"Equipement"]
= new
SelectList(_entities.T_E_EQUIPEMENTS_RESEAU_EQP.ToList(),
"EQP_ID",
"EQP_NOM");
return View(_entities.T_E_CONSOMMATEURS_CSO.ToList());

both table are joined by the foreign key CSO_EQP_ID and the primary key EQP_IDI have no clue of what to define in the view ?Any exemple of this simple need will be welcome.

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How To Bound Data To Property Of User Control

Sep 25, 2009

I have a web user control that I want to use in a gridview. I need to set a property on the web user control. I am using this:

UserID='<%# Bind("PrimaryKeyValue") %>'

Like you would bind to any control in the ItemTemplate of a Gridview.

But - for some reason that value isn't being passed to my control. I have tried binding the value to a label and it writes to the page fine so I know the value is there but when I try to bind it my own web user control, it doesn't work.

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GridView RowStyle Dependent On Property Of Item Row Bound To?

Jan 19, 2010

I'm currently using a GridView and I want to set the CssClass for the Row depending on a property of the object that the row is being bound to.I tried the following:

<asp:GridView id="searchResultsGrid" runat="server" AllowPaging="true" PageSize="20" AutoGenerateColumns="false">
<!-- The following line doesn't work because apparently "Code blocks
aren't allowed in this context --> <RowStyle CssClass="<%#IIF(DataBinder.Eval(Container.DataItem,"NeedsAttention","red","") %>
<Columns>
<!--............-->
</Columns>
</asp:GridView>

Now I could simply handle theGridView's RowDataBound event and change the css class of the row there...but I'm trying to keep a clear separation between the UI and the page/business logic layers.

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Is Echo <%= %> Syntax Evaluated Before The Declared Value Is Bound To The Property

Oct 29, 2010

When are declared values bound to properties of a user control in WebForms?

I have a user control which has a public property which is an enum type. In my aspx page I'm setting it's value declaratively. In the ascx I'm outputting the value to the page using <%= %> syntax. The value that is output by the echo syntax is always zero 0. The enum does nopt have a zero value.

My question therefore is, is echo <%= %> syntax evaluated before the declared value is bound to the property?

[code]....

The output is :

<a href="foo.aspx?foo=0">Foo</a>
<a href="foo.aspx?foo=0">Foo</a>
<a href="foo.aspx?foo=0">Foo</a>

I'm going to assume that zero is the "unset" value for any enum member and therefore assume that <%= is executed before the value is bound to the property.

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DataSource Controls :: Entity FK Setup Via VS2010 / Working Enity Model With Foreign Keys Working?

Jul 9, 2010

Am trying to get a working enity model with foreign keys working but have run into a problem. I have imported 3 tables with content and some data.Lets call these tables geo_countries, geo_counties, geo_municipalities and the FK are:1. geo_county have a column country_id wich corresponds to country_id in geo_country 2. geo_municipality have a column county_id wich correspond to the county_id in geo_county.The problem i have is when i try to get correspondig child items with the following code i run into trouble:

[Code]....

The problem above is that 'test' generates results but not 'test2', wich never return anything. Am i not supposed to be able to do it like i do in 'test2'? I earlier tried to add a child object by replacing ToList() with Add() and that worked. But i cant seem to get anything out of it.

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MVC :: EF - Nullreferenceexception In View. Handle Non Existing Object References In View Model

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.

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Gridview - Toggle Checked Property Of A Data Bound Checkbox?

Aug 9, 2010

I have a GridView control that has one column of checkboxes set up like this:

<asp:TemplateField>
<ItemTemplate>
<asp:CheckBox ID="RowCheckBox" runat="server" Enabled="false" Checked='<%# (bool)DataBinder.Eval(Container.DataItem ,"Associated") %>'/>
</ItemTemplate>
</asp:TemplateField>

Then when the user clicks an Edit button I run a script that enables all the checkboxes (which works fine), and then when the user then clicks on a checkbox the tick is appearing or disappearing as it should.

The problem I'm having is that when I try to read the value of the checkbox from the codebehind:

CheckBox checkBox = (CheckBox) row.FindControl("RowCheckBox");
bool checked = checkBox.Checked;

If the value bound to it was true then checked is still true, no matter if it was toggled or not.

Edit: Corrected a spelling mistake. Question still stands though...

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MVC :: Partial View Not Sending View Model To ActionResult Method?

Dec 29, 2010

've created a Search partial view and it works, except for my view model. What i mean is, the partial view sends a string to my ActionResult Method, but only a string, that is not related to the view model that the partial view is built in. If i tell my ActionResult method to receive the view model in which the partial view is built in, it always tells me that i have null values. Here's my code This is my partial view:

[Code]....

Now here is my Model in my MoviesSearch view model:

[Code]....

Now the actual MoviesSearchViewModel

[Code]....

Inside my Search controller i have this

[Code]....

And then i have this:

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MVC2 View Model For Multiple View Forms And Data

Aug 26, 2010

one thing that has been puzzling me since learning MVC2 is the following case scenario: I have a view which contains two latest news lists, a login form and a signup form. Every example I found on Views and View Models so far has a one-to-one example such as a simple login form etc. But how do I create a model that provides the properties and validation for a login and signup form and manages the data for the news lists. can I pass multiple models in the strongly typed view? When I created one model the form validation would fail as it expects all fields - login and signup to be filled. I am missing some advanced examples or information.

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Forms Data Controls :: Visible Property On DataGridView Bound Field?

Nov 4, 2009

[Code]....

I have a field in my code as not visible but because of that I can't do this:

[Code]....

[Code]....

So the problem is with the folderid value. When I make the field visible it works. Is there a way around this?

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Localization :: LINQ2SQL / Text Label Is Bound To The SwedishText Property In The Mark Up?

Mar 12, 2010

Im using LINQ2SQL and i have an object called Article. Its has 2 properties FinishText and SwedishText. The idea is to let the user choose language. Swedish is default.

I bind the objects to a listView and there is a label that takes the swedish language. When the user presses the Finish flag button i want the objects to reload and the finish text to show instead of the swedish. The problem is that the text label is bound to the SwedishText property in the mark up like this:

<%#DataBinder.Eval(Container.DataItem, "SwedishText")%>

I can think of some ways to solve this, and i have one that doesnt work that well. My question is, what would be a good way to solve this? Im not so experienced so i know that there are lots of you out there that know how to do this much better.

Another problem i dont like my solution to is when i have an object that has a association with my Article object, like ArticleCategory. The ArticleCategoryId of my Article is, lets say 31, which is corresponds to the category "Movies". I dont want to display the category id but rather the name of the category itself (Movies).

So this is what i do:
<%#GetCategoryNameFromId(DataBinder.Eval(Container.DataItem, "Article_Id"))%>

I call a method that recreates the artice object and from there creates the ArticleCategory and gets the name from it. Its a horrible solution cause it involves lots of trips to the Database. Especially since i do similar things with other properties.

Just wanted to hear what is a proper and good way to deal with these common but for me new tasks.

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MVC :: View And Partial View Sharing The Same ViewData.Model?

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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MVC :: How To Pass A Partial View From A Different Model To A View Page

Nov 22, 2010

I would like to add a partial view to my view page

The view page contain a mode name "<IEnumerable<JvTake1.Models.VortN>>

And the partial view contain a model name "<IEnumerable<JvTake1.Models.VideoL>>"
So, theoretically I think they were suppose to work together but no Can any one guide me how to make it happen?

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MVC :: Passing Model Object To View And From View To Controller?

Aug 6, 2010

I've got problem with my app .

I've got such classes (this is some kind of tree structure):

[Code]....

[Code]....

in Index() action i've got this piece of code

[Code]....

[Code]....

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MVC :: Render Partial View Itself In View Model Document?

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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