This property:

    [System.Web.Mvc.HiddenInput(DisplayValue = false)]
    public int Id { get; set; }

will be rendered as i.e.

    &lt;input id=&quot;Id&quot; name=&quot;Id&quot; type=&quot;hidden&quot; value=&quot;21&quot; /&gt;

when using `Html.EditorForModel()` or  `Html.EditorFor(m =&gt; m.Id)`

Can I do something like the following?

    .class1{some stuff}
    
    .class2{class1;some more stuff}


Nesting CSS classes

I added a new column to my table but I forgot to add the `:default` option. Now I want to populate that column on every single row.

Is there a way to do with using the console? I&#39;ve been searching google for the past hour but I can&#39;t find anything.

I know how to do it for a single object, but not for all rows of a model.

    Foo.find(1).update_attribute(:myattribute, &#39;value&#39;)

Update a column, all rows

I thought this would be a quick search on google but maybe I&#39;m missing something. Is there a way, using Data Annotations, to set a ViewModel property to create a HiddenInput when the markup get rendered?

The only annotations I&#39;ve found were to hide the property from the view entirely, I still want the property rendered but as a hidden input.

Asp.Net Mvc Hidden Field from Data Annotations

<p>I thought this would be a quick search on google but maybe I'm missing something. Is there a way, using Data Annotations, to set a ViewModel property to create a HiddenInput when the markup get rendered?</p>
<p>The only annotations I've found were to hide the property from the view entirely, I still want the property rendered but as a hidden input.</p>


I am working in progress bar concept in ASP.NET MVC 2. Here i have a DropDownList which has 10 values. i want to calculate the percentage for progress bar, e.g. 10 values from DropDownList and i am having a query which returns the value 2. so, out of 10 values i am getting 2. &quot;20 % completed&quot; should be displayed.. How to do this calculation

Percentage calculation

In the default ASP.NET MVC 3 project, layout &amp; partial cshtml files start with an underscore 

* `_viewstart`
* `_Layout`
* `_LogOnPartial`

Why this convention, and what is this used for? Do I need to follow this convention?

Does the framework give some special meaning to a `.cshtml` file that begins with an underscore?

Why does Razor _layout.cshtml have a leading underscore in file name?

How do I implement reCaptcha in ASP.NET MVC and C#?

How to implement reCaptcha for ASP.NET MVC?

I get an error:

&gt;&quot;The controller for path &#39;/favicon.ico&#39; was not found or does not implement IController&quot;

Then I thought: how does the framework know for which files it has to instantiate a controller, because the same thing is true for script, css and other files?

(never thought of that, but now the favicon is complaining, I was wondering....)

But back to the error, why does that occur?

mvc: does the favicon.ico also look for a controller?

I have a URL like this:

`http://www.example.com/mypage.aspx?myvalue1=hello&amp;myvalue2=goodbye`

I want to get `http://www.example.com/mypage.aspx` from it. 

Can you tell me how can I get it?


Get url without querystring

I am introducing ASP.NET MVC to a new team and one of the questions that comes up often is &quot;Is there a designer view&quot;

Even if it&#39;s not for layout is there an IN visual studio design view for ASP.NET MVC3 using the razor view engine.

ASP.NET MVC Razor designer

First, before anyone screams dupe, I had a hard time summarizing it in a simple title.  Another title might have been &quot;What is the difference between a domain model and MVC model?&quot; or &quot;What is a model?&quot;

Conceptually, I understand a Model to be the data used by the views and controller.  Beyond that, there seems to be a great deal of differing opinions on what makes up the model.  What&#39;s a domain model, versus an app model, vs a view model, vs a service model, etc..

For example, in a recent question I asked about the repository pattern, I was told point blank that the repository is part of the model.  However, I have read other opinions that the model should be seperated from the persistence model and the business logic layer.  After all, isn&#39;t the Repository pattern supposed to decouple the concrete persistence method from the model?  Other people say there is a difference between the Domain model and the MVC model. 

Let&#39;s take a simple example.  The AccountController that is included with the MVC default project.  I&#39;ve read several opinions that the Account code included is of poor design, violates SRP, etc.. etc..  If one were to design a &quot;proper&quot; Membership model for an MVC application, what would that be?

How would you seperate the ASP.NET services (Membership provider, role provider, etc..) from the model?  Or would you at all?  

The way I see it, the model should be &quot;pure&quot;, perhaps with validation logic.. but should be seperate from business rules (other than validation).  For example, let&#39;s say you have a business rule that says someone must be emailed when a new account is created.  That doesn&#39;t really belong in the model in my view.  So where does it belong?

Anyone care to shed any light on this issue?

Where does the &quot;business logic layer&quot; fit in to an MVC application?

I&#39;m trying to add a class to an input.

This is not working:

    @Html.EditorFor(x =&gt; x.Created, new { @class = &quot;date&quot; })


ASP.NET MVC 3 Razor - Adding class to EditorFor

Im using this in my view and want it to display only &quot;Yes&quot; or &quot;No&quot;
but its displaying `False?&quot;yes&quot;:&quot;No&quot;`

    @myPosts.Contains(item.ID)?&quot;Yes&quot;:&quot;No&quot;

Whats wrong here?



Shorthand if else with razor

I am trying to read the keys from the `Web.config` file in a different layer than the web layer (Same solution)

Here is what I am trying:

    string userName = System.Configuration.ConfigurationManager.AppSettings[&quot;PFUserName&quot;];
    string password = System.Configuration.ConfigurationManager.AppSettings[&quot;PFPassWord&quot;];


And here is my `appSettings` in the `Web.config` file:
         
    &lt;configuration&gt;
       ....
       &lt;appSettings&gt;
          &lt;add key=&quot;PFUserName&quot; value=&quot;myusername&quot;/&gt;
          &lt;add key=&quot;PFPassWord&quot; value=&quot;mypassword&quot;/&gt;
       &lt;/appSettings&gt;
       ....
    &lt;/configuration&gt;

When I debug the code `username` and `password` are just `null`, so it is not getting the value of the keys.

What am I doing wrong to read these values?

Reading a key from the Web.Config using ConfigurationManager

Is there a way through data annotations to require that a boolean property be set to true?

    public class MyAwesomeObj{
        public bool ThisMustBeTrue{get;set;}
    }

MVC Model require true

On my MVC3 project, I store score prediction for football/soccer/hockey/... sport game. So one of properties of my prediction class looks like this:

    [Range(0, 15, ErrorMessage = &quot;Can only be between 0 .. 15&quot;)]
    [StringLength(2, ErrorMessage = &quot;Max 2 digits&quot;)]
    [Remote(&quot;PredictionOK&quot;, &quot;Predict&quot;, ErrorMessage = &quot;Prediction can only be a number in range 0 .. 15&quot;)]
    public int? HomeTeamPrediction { get; set; }


Now, I need also change error message for a data type, `int` in my case. There is some default one used - &quot;The field HomeTeamPrediction must be a number.&quot;. Need to find a way how to change this error message. This validation message also seem to take prediction for Remote validation one.

I&#39;ve tried `[DataType]` attribute but this does not seem to be plain number in `system.componentmodel.dataannotations.datatype` enumeration.



Int or Number DataType for DataAnnotation validation attribute

I&#39;m working with the Code First feature of Entity Framework and I&#39;m trying to figure out how I can specify the column data types that should be created when the database is auto-generated.

I have a simple model:

    public class Article
    {
        public int ArticleID { get; set; }

        public string Title { get; set; }
        public string Author { get; set; }
        public string Summary { get; set; }
        public string SummaryHtml { get; set; }
        public string Body { get; set; }
        public string BodyHtml { get; set; }
        public string Slug { get; set; }

        public DateTime Published { get; set; }
        public DateTime Updated { get; set; }

        public virtual ICollection&lt;Comment&gt; Comments { get; set; }
    }

When I run my application, a SQL CE 4.0 database is automatically created with the following schema:

![DB Schema][1]

So far, so good! However, the data I will be inserting into the `Body` and `BodyHtml` properties is routinely larger than the maximum allowed length for the `NVarChar` column type, so I want EF to generate `Text` columns for these properties.

However, I cannot seem to find a way to do this! After quite a bit of Googling and reading, I tried to specify the column type using `DataAnnotations`, from information found in [this answer][2]:

    using System.ComponentModel.DataAnnotations;

    ...

    [Column(TypeName = &quot;Text&quot;)]
    public string Body { get; set; }

This throws the following exception (when the database is deleted and the app is re-run):

    Schema specified is not valid. Errors: (12,6) : error 0040: The Type text is not qualified with a namespace or alias. Only PrimitiveTypes can be used without qualification.

But I have no idea what namespace or alias I should be specifying, and I couldn&#39;t find anything that would tell me.

I also tried changing the annotation as per [this reference][3]:

    using System.Data.Linq.Mapping;

    ...

    [Column(DbType = &quot;Text&quot;)]
    public string Body { get; set; }

In this case a database _is_ created, but the `Body` column is still an `NVarChar(4000)`, so it seems that annotation is ignored.

Can anyone help? This seems like it should be a fairly common requirement, yet my searching has been fruitless!


  [1]: http://i.stack.imgur.com/A4OI9.gif
  [2]: https://stackoverflow.com/questions/4829776/generate-money-type-fields-using-code-first-ef-ctp5/4833477#4833477
  [3]: http://msdn.microsoft.com/en-us/library/system.data.linq.mapping.columnattribute.dbtype.aspx

How do I specify that a property should generate a TEXT column rather than an nvarchar(4000)

What is difference between `DisplayName` attribute and `Display` attribute in ASP.NET MVC?

displayname attribute vs display attribute

I have this attribute in my view model:

    [DataType(DataType.DateTime)]
    public DateTime? StartDate { get; set; }

If I want to display the date, or populate a textbox with the date, I have these:

    &lt;%: Model.StartDate %&gt;

    &lt;%: Html.TextBoxFor(m =&gt; m.StartDate) %&gt;

Whenever the date is displayed, it&#39;s displayed like: **01/01/2011 12:00:00 AM**

But I&#39;d like to only display **01/01/2011**

Is there a way to apply a display format with data annotations? I don&#39;t want to have to go to every instance where I display a date, and add some code to format it.

Content Type	Original Author	Original Content on Stackoverflow
Question	Justin Soliz	View Question on Stackoverflow
Solution 1 - asp.net	miensol	View Answer on Stackoverflow

Asp.Net Mvc Hidden Field from Data Annotations

asp.net Problem Overview

asp.net Solutions

Solution 1 - asp.net

Update a column, all rows

Nesting CSS classes

Attributions