This was recently introduced in ASP.NET MVC 3 projects (after installing the [ASP.NET MVC 3 Tools Update][1]). I guess it is in preparation for handling upcoming WebPages releases (Razor) in ASP.NET MVC 4 where you will be able to choose the version of the razor view engine with your application. Currently it doesn&#39;t do much.


  [1]: http://www.microsoft.com/downloads/en/details.aspx?FamilyID=82cbd599-d29a-43e3-b78b-0f863d22811a

From the [MSDN Blog](http://blogs.msdn.com/b/webdev/archive/2013/07/10/how-does-vs-determine-which-version-of-razor-engine-to-use-when-editing-razor-webpage-files.aspx),

It determines which version of Razor engine to use when editing razor webpage files.

&gt; In VS2013 Preview, we released new Razor V3 runtime and design time Engine to support MVC5 and Razor V3 website’s runtime and design time behavior. Unlike Razor V2 runtime and design time, VS2013 did not GAC these binaries. Instead, the binaries are installed in the project bin folder when corresponding NuGet package is installed, and in “%ProgramFiles (x86)%\Microsoft Visual Studio 12.0\Common7\IDE\CommonExtensions \Microsoft\Web\Razor\v3.0” to support design time.`
&gt;
&gt; **If the key is missing from web.config file such as default Razor V2/V3 website, VS will use bin directory’s razor dll version to determine the design time razor engine dll to load.**
&gt;
&gt; **Updated 10/9/2013: In VS2013 RC and RTW, VS will open the single webpage file using the highest Razor version on the box if a single webpage file (i.e. cshtml or vbhtml files) is opened without bin directory nor web.config setting.**

It [is being used][1] to distinguish between the second and the third version of Razor engine.

[1]: http://blogs.msdn.com/b/webdev/archive/2013/07/10/how-does-vs-determine-which-version-of-razor-engine-to-use-when-editing-razor-webpage-files.aspx

Okay, so I want to display a list containing lists of lists of lists...

I have no way of knowing how many levels there are to display, so I figured this is where I break out the old recursive routine.

I&#39;m having trouble with exactly how to go about this though.

This is what I have so far (in view - simplified):

    @foreach(MyObject item in @Model.ListOfObjects){ 
        &lt;div&gt; @item.Title &lt;/div&gt;
        //Call recursive function?
    }

Now each of these objects also have a List&amp;lt;MyObject&gt;. I want to display each level below this div, with a tab indent per level for instance.

I was thinking a Razor function would be the thing to do here, but I need some help in forming it. Here&#39;s my thinking:

    @functions{
        public static void ShowSubItems(MyObject _object){
             if(_object.ListOfObjects.Count&gt;0){
                 foreach(MyObject subItem in _object.listOfObjects){

                     // Show subItem in HTML
                     ShowSubItems(subItem);
                 }
             }
         }
     }

But as you can see, I plainly need some help :)





ASP.NET MVC 3 Razor recursive function

In Linux, how can I find all `*.js` files in a directory recursively?  The output should be an absolute path (like `/pub/home/user1/folder/jses/file.js`)



**this answer worked for me:**

    find $PWD -name &#39;*.js&#39; &gt; out.txt

It finds all *.js files, output absolute path, writes the results into out.txt.

How can I find all *.js file in directory recursively in Linux?

When creating a new project using the ASP.Net MVC 3 tools it adds the following application setting to the Web.config:

    &lt;appSettings&gt;
      &lt;add key=&quot;webpages:Version&quot; value=&quot;1.0.0.0&quot;/&gt;
    &lt;/appSettings&gt;

What does it do?

What does the webpages:Version setting do?

When creating a new project using the ASP.Net MVC 3 tools it adds the following application setting to the Web.config:
<pre><code class="hljs language-php-template">&#x3C;appSettings>
 &#x3C;add key="webpages:Version" value="1.0.0.0"/>
&#x3C;/appSettings>
</code></pre>
What does it do?

I am trying to get client ip address using 

        HttpContext.Request.UserHostAddress;


but it returns `::1`.

How to solve this?

Request.UserHostAddress issue with return result &quot;::1&quot;

How can I access JavaScript value inside `@URL.Action()`?
something like: 

    &lt;script type=&quot;text/javascript&quot;&gt;
    function name(myjavascriptID)
    {
         jQuery(&quot;#list_d&quot;).jqGrid(&#39;setGridParam&#39;, { url: &#39;@URL.Action(&quot;download file&quot;, &quot;download&quot;, new { id = &lt;myjavascriptID&gt; })&#39;, page: 1 });
        
    }
    &lt;/script&gt;

How to access javascript variable within @URL.Action()

Why does `Request[&quot;parameterName&quot;]` returns null within the view? I know I can get it from the controller but I have to make a little check in the View. I am using ASP.NET MVC 3.

c# razor url parameter from view

I need to create a function that is only necessary inside one cshtml file. You can think of my situation as ASP.NET page methods, which are min web services implemented in a page, because they&#39;re scoped to one page. I know about HTML helpers (extension methods), but my function is just needed in one cshtml file. I don&#39;t know how to create a function signature inside a view.
**Note**: I&#39;m using Razor template engine.

How to create a function in a cshtml template?

I am very new to RoR and I want to select between APS.NET MVC3 and RoR. C# is sure easier for me as I have been doing it for so long but I am wondering if there is any point to consider using RoR over .MVC to develop a real world website? 

What else do I get with RoR which I can&#39;t get with ASP.NET MVC 3 that worth spending the time to master RoR? I though the available community RoR plug-in would be one reason but it does not seem that organized and seems like the learning curve to do the right things is going to be so big that it won&#39;t practically save much time for a newby! I could be wrong here and I really appreciate your real-life comment on this? Mind you that I still have to learn ASP.NET MVC but that sounds quick for a .NET Guy!

What could RoR offer to a .NET guy that **WORTH** picking RoR over ASP.NET MVC 3? and please the practical advices! :)

Ruby on Rails vs ASP.NET MVC 3 for a .NET Guy?

I have code in the `global.asax` file&#39;s `Application_Error` event which executes when an error occurs and emails details of the error to myself.

    void Application_Error(object sender, EventArgs e)
    {
        var error = Server.GetLastError();
                                
        if (error.Message != &quot;Not Found&quot;)
        {
            // Send email here...
        }
                    
    }

This works fine when I&#39;m running it in Visual Studio, however when I publish to our live server the `Application_Error` event does not fire.

After some testing I can get the `Application_Error` firing when I set `customErrors=&quot;Off&quot;`, however setting it back to `customErrors=&quot;On&quot;` stops the event from firing again.

Can anyone suggest why `Application_Error` would not be firing when `customErrors` are enabled in the `web.config`?

Application_Error not firing when customerrors = &quot;On&quot;

***Background-info:***  

I&#39;m using Microsoft Visual Web Developer 2010 Express.  
Info about my (lack of) experience: the problem occured within the first tutorial that I&#39;m trying to work through.   

Some additional-info:

 - I&#39;m comfortable with C#, Postgres, Rails (so MVC &amp; Web-apps are not new to me)
 - I have **no** experience with ASP.NET or SQL Server  


  
  
***Problem Description:***

I&#39;m trying to following exactly the steps from the [&quot;Intro to ASP.NET MVC 3&quot;][1]-tutorial and I&#39;m running into a problem at [the first step from part 5 - Adding the MoviesController: ][2]

When I&#39;m trying to add the &quot;MoviesController&quot; with the exact settings that are shown in the tutorial and click &#39;Add&#39; I get the following error:

&gt; &quot;Unable to retrieve metadata for
&gt; MvcMovie.Models.Movie. **Unable to
&gt; find the requested .Net Framework Data
&gt; Provider.** It may not be installed.&quot;

Google gave a ton of results when searching for the phrase &quot;Unable to find the requested .Net Framework Data Provider&quot;, but nothing has solved the problem so far.  
  
 

***What I&#39;ve tried:***


I think SQL-Server was not installed so I installed it from the Visual-Studio Express ISO- got an error then I&#39;ve run a repair from the ISO and it claimed that all 15 points including SQL Server Express repair &amp;.NET 4 Framework went through successfully.

I&#39;ve run the The_.NET_Framework_Setup_Verification_Tool which succeeded for everything.
http://blogs.msdn.com/b/astebner/archive/2008/10/13/8999004.aspx


After the mentioned (re-)installing &amp; repairing I recreated the Project and followed every step as described in the tutorial and got the same error. 


I found that I should look for DbProviderFactories in machine.config,

The root-Web.config of the Project has the following entries

      &lt;connectionStrings&gt;
        &lt;add name=&quot;MovieDBContext&quot;
         connectionString=&quot;Data Source=|DataDirectory|Movies.sdf&quot;
         providerName=&quot;System.Data.SqlServerCe.4.0&quot;/&gt;

My machine config-file has only one DbProviderFactories entry:

    &lt;DbProviderFactories&gt;
    &lt;add name=&quot;Microsoft SQL Server Compact Data Provider&quot; invariant=&quot;System.Data.SqlServerCe.3.5&quot; description=&quot;.NET Framework Data Provider for Microsoft SQL Server Compact&quot; type=&quot;System.Data.SqlServerCe.SqlCeProviderFactory, System.Data.SqlServerCe, Version=3.5.0.0, Culture=neutral, PublicKeyToken=89845dcd8080cc91&quot;/&gt;&lt;/DbProviderFactories&gt;


then I found the following quote

&gt; &quot;we have changed the way
&gt; DbProviderFactories.GetFactoryClasses()
&gt; determines the framework providers in
&gt; VS2010. They are no longer listed in
&gt; the machine.config file. &quot;

from http://social.msdn.microsoft.com/Forums/en-ZA/adodotnetdataproviders/thread/d79129c4-ae05-4c45-8997-bd90f5765a3a

***Question:***  

**So perhaps this is the wrong direction and since I have no clue what to try next, what steps should I take to investigate &amp; solve this problem?**  
Btw. I have postgres installed, so if using postgres instead of SQL-server would be an easy solution let me know. For my own projects I would want to use a different DB anyway (probably postgres), but for now I would just want to be able to get successfully through the first and seemingly simple tutorial I&#39;ve tried.

  [1]: http://www.asp.net/mvc/tutorials/getting-started-with-mvc3-part1-cs
  [2]: http://www.asp.net/mvc/tutorials/getting-started-with-mvc3-part5-cs

ASP.NET MVC 3 - Unable to find the requested .Net Framework Data Provider

The configuration file for logback gets found on the classpath, and is therefore Eclipse-project-specific, which is not what I want. I&#39;m using multiple Java utilities, all of them residing in a single project (this sharing the classpath), and I need to use a specific configuration for some of them.

I&#39;ve tried variable substitution and Joram configurator, but nothing worked for me. This was most probably my fault, and I&#39;m going to solve it one day, but for now I&#39;d need a simple solution.


How to use multiple configurations with logback in a single project?

I have a Symfony2 Twig template. I want to output the value of a config parameter in this twig template (a version number). Therefore I defined the config parameter like this:

    parameters:
        app.version: 0.1.0

I&#39;m able to use this config parameter in Controllers but I have no clue how to get it in my Twig template. 

How to get config parameters in Symfony2 Twig Templates

I&#39;m using `AutoMapper` in an `ASP.NET MVC` application. I was told that I should move the `AutoMapper.CreateMap` elsewhere as they have a lot of overhead. I&#39;m not too sure how to design my application to put these calls in just 1 place.

I have a web layer, service layer and a data layer. Each a project of its own. I use `Ninject` to DI everything. I&#39;ll utilize `AutoMapper` in both web and service layers. 

So what are your setup for `AutoMapper`&#39;s CreateMap? Where do you put it? How do you call it?

Where to place AutoMapper.CreateMaps?

I am configuring an MVC 3 project to work on a local install of IIS and came across the following 500 error:

&gt; Handler &quot;PageHandlerFactory-Integrated&quot; has a bad module
&gt; &quot;ManagedPipelineHandler&quot; in its module list.

It turns out that this is because ASP.Net was not completely installed with IIS even though I checked that box in the &quot;Add Feature&quot; dialog.  To fix this, I simply ran the following command at the command prompt

    %windir%\Microsoft.NET\Framework64\v4.0.30319\aspnet_regiis.exe -i

If I had been on a 32 bit system, it would have looked like the following:

    %windir%\Microsoft.NET\Framework\v4.0.21006\aspnet_regiis.exe -i

My question is, is there a way to install IIS on a windows 7 box to use .NET 4.0 (MVC 3) without taking this extra step?

How to fix: Handler &quot;PageHandlerFactory-Integrated&quot; has a bad module &quot;ManagedPipelineHandler&quot; in its module list

I am trying to create a simple configuration file that looks like this

    url = http://mysite.com
    file = main.exe
    true = 0
when the program runs, I would like it to load the configuration settings into the programs variables listed below.

    string url, file;
    bool true_false;
I have done some research and [this][1] link seemed to help (nucleon&#39;s post) but I can&#39;t seem to get it to work and it is too complicated to understand on my part. Is there a simple way of doing this? I can load the file using `ifstream` but that is as far as I can get on my own. Thanks!


  [1]: http://www.daniweb.com/software-development/cpp/threads/185995

Content Type	Original Author	Original Content on Stackoverflow
Question	Generic Error	View Question on Stackoverflow
Solution 1 - asp.net Mvc	Darin Dimitrov	View Answer on Stackoverflow
Solution 2 - asp.net Mvc	Anujith	View Answer on Stackoverflow
Solution 3 - asp.net Mvc	Lukáš Lánský	View Answer on Stackoverflow

What does the webpages:Version setting do?

asp.net Mvc Problem Overview

asp.net Mvc Solutions

Solution 1 - asp.net Mvc

Solution 2 - asp.net Mvc

Solution 3 - asp.net Mvc

How can I find all *.js file in directory recursively in Linux?

ASP.NET MVC 3 Razor recursive function

Attributions