C# - MVC ViewModel And DropDownList

Jan 30, 2010

I have 2 properties in my ViewModel

class ViewModel1
{
Dictonary<int, string> PossibleValues {get;set;}//key/value
int SelectedKey {get;set}
}

I want to edit this using a Html.DropDownListFor I want to get MVC to auto serialize the data into/from the ViewModel so I can the following

public ActionResult Edit(ViewModel1 model) ...

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Feb 16, 2010

its said that 1 ViewModel has 1 View. 1 View is for me a UserControl. What if my UserControl has different areas filled with data from different entities, do I have then several Views and need to build several ViewModels? e.g: I display in a UserControl 3 entities: customer(listbox),order(datagrid),product(datagrid). Each of those "data areas" has add+remove buttons and textboxes to enter data.

Actually each of those "data areas" are put in its own GRID having so the posibility to set a individual datacontext.

1.) Should I now create 3 ViewModels CustomerVM,OrderVM and ProductVM?
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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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Update A ViewModel In MVC2?

Mar 2, 2010

[HttpPost]
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Jun 20, 2010

I have used IDataErrorInfo Validation for my Model.

But when I use these model classes inside a view model, the validation does not happen.

sample viewmodel below

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Now, if Category or Subcategory classes are directly used as models for view, the validation works fine. But, if CategoryViewModel is used, no validation occurs.

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I'm trying to get my own viewmodel after submit my form and I got the following error:

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Jan 19, 2010

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[Code]....

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Sep 5, 2010

In my page there is a Login form. It looks like

[Code]....

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Feb 23, 2011

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Jan 27, 2011

I have a table called "question" which consists of various columns, including 3 columns of type: bit.

these columns are: yes, no, maybe.

The corresponding viewmodel has 3 properties of type boolean. The controller returns the views, which are based on the viewmodels.

By default MVC create checkboxes for boolean types, the thing is that the properties have to be related, only 1 should be checked at a time. That is why I want to change the checkboxes to radiobuttons.

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C# - ViewModel Validation For A List?

Feb 28, 2011

I have the following viewmodel definition

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MVC :: VB Syntax For Validation In ViewModel?

Jul 14, 2010

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[Code]....

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Nov 5, 2010

I have a ViewModel that contains an EntityObject and when I use a HtmlHelper like this

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Jan 7, 2011

I'm making an MVC2 app to manage billing schemes. These billing schemes can be of various types, e.g. daily, weekly, monthly, etc. and all types have their specific properties. My class structure looks like this:

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I am just getting started with MVC after many years of WebForms development.

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The ViewModel:

[Code]....

The View:

[Code]....

The Controller:

[Code]....

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but what if I wanted to bind to collection items within the ViewModel. I'm not sure if it's possible. Here's what I have:

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[code]....

I'm getting the following error: Templates can be used only with field access, property access, single-dimension array index, or single-parameter custom indexer expressions.

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May 7, 2010

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public class TheViewModel
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TheModel TheModel { get; set;}
}
[code]...

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MVC :: Is There A Way To Handle Dynamic Forms Using ViewModel

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I need to create a dynamic form using the already existing DB entries, from 3 different tables. I am trying to do this by inheriting ViewModel class, which is comprised of all the model instances (or List of instances of unknown count) within it.

When I inherit the ViewModel in the View Template, the dynamic form gets generated without any issues, and looks fine. The dynamic form is generated based on iterating over the calls for each required model instance in the ViewModel passed to the View.Each call uses a partial view of the instance to generate the form, and hence multiple iterations create multiple instances of the form.

[Code]....

However, when I try to submit the form, the postback does not include the ViewModel object, but rather only the first model instance used in the form.

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C# - Model Validation With ViewModel Don't Works?

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I use viewModels to communicate between my controller and my view. To get model validation, i use a partial class like this :

[MetadataType(typeof(EvaluationValidation))]
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[Code]....

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MVC :: ViewModel And Adding To / Accessing List

Apr 12, 2010

I am trying to create a view that would contain a set of fields that tie to an AgencyAddress object, an add button, and under those fields, a list of AgencyAddress that would show addresses that were added. My view works, and the fields are properly bound, however I can't seem to get the list to maintain previously added addresses.

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[Code]....

My Create controller action (HTTP Get) is here:

[Code]....

And finally, my HTTP Post Create action:

[Code]....

The loop in the view that should show addresses:

[Code]....

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Jul 1, 2010

I am currently designing a new .NET application and would like to keep it UI independant.

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I have the following scenario;

<%
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i am creating inintalizing a viewmodel with the following code in an create action;

[Code]....

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