Both of the following work

    @{
    /*
        This is a comment
    */}


    @//This is another comment

Update
------

With the new Beta of MVC 3 out the old methods of highlighting won&#39;t work.

    @{
        //This is a comment
    }
 
    @{/*
          This is a multi
          line comment
    */}

    @*
          This is a comment, as well
    *@

Is the updated method `@//This is a comment` and `@/* */` will no longer work.

Inside the .cshtml file, just press *cntrl+k* and *cntrl+c*, You will see the comment is automatically added by visual studio.(alternatively, *cntrl_k* and *cntrl+u* for uncommenting.)
Or else if you want to write it manually then, just gohead with 

    @* Your Code *@

If its in your view, couldn&#39;t you use the standard HTML `&lt;!-- ... //--&gt;` or the .NET style `&lt;%-- .. --%&gt;`?

I want to execute Linux shell commands with Maven. Here is what I tried:

    &lt;plugin&gt;  
      &lt;groupId&gt;org.codehaus.mojo&lt;/groupId&gt; 
      &lt;artifactId&gt;exec-maven-plugin&lt;/artifactId&gt; 
      &lt;version&gt;1.1.1&lt;/version&gt; 
      &lt;executions&gt;
        &lt;execution&gt;
          &lt;goals&gt;
            &lt;goal&gt;exec&lt;/goal&gt; 
          &lt;/goals&gt;
        &lt;/execution&gt;
      &lt;/executions&gt;
      &lt;configuration&gt;
        &lt;executable&gt;hostname&lt;/executable&gt; 
      &lt;/configuration&gt;
    &lt;/plugin&gt;


I want to execute shell commands from Maven&#39;s pom.xml

Does anyone know the safest width and height for the BODY when viewing any web page on the iPad?  I want to avoid the scrollbars as much as possible.

Thanks.

Erik

iPad browser WIDTH &amp; HEIGHT standard

What is the syntax for server side comment in razor view?

I want to comment this code:

    /*
    @helper NavItem() {
      
    }
    */


Razor comment syntax

What is the syntax for server side comment in razor view?
I want to comment this code:
<pre><code class="hljs language-php">/*
@helper NavItem() {
 
}
*/
</code></pre>

I am creating a sample ASP.NET MVC 3 site using Razor as view engine. The razor syntax starts with `@` character e.g. `@RenderBody()`. If I write @test on my cshtml page it gives me parse error

&gt; CS0103: The name &#39;test&#39; does not exist in the current context

How do I escape &#39;@&#39; character?

Escape @ character in razor view engine

I have a table with repeating customer rows, I would like to add the customer ID to the ID attribute of my table rows like this:

    &lt;tr id=&quot;row&lt;customer id&gt;&quot;&gt;&lt;/tr&gt;

I try adding this code:

    @foreach(var c in Model) {
       &lt;tr id=&quot;row@c.id&quot;&gt;&lt;/tr&gt;
    }

Which gives me the following output:

    &lt;tr id=&quot;row@c.id&quot;&gt;&lt;/tr&gt;
    &lt;tr id=&quot;row@c.id&quot;&gt;&lt;/tr&gt;

etc.

But I would like it to be:

    &lt;tr id=&quot;row1&quot;&gt;&lt;/tr&gt;
    &lt;tr id=&quot;row2&quot;&gt;&lt;/tr&gt;

etc.

I also tried to add `&lt;tr&gt;row@{c.id}&lt;/tr&gt;` but it did not work..

Razor syntax inside attributes of html elements (ASP MVC 3)

**Important Update: See update 5 at the bottom there is no performance issue in asp.net mvc 3, this is a benchmark issue**


I&#39;ve made a simple hello world project in asp.net mvc2,3 aspx and 3 razor and benchmarked them. What I see is:

    System                  Requests per second
    -------------------------------------------
    asp.net mvc 2 ASPX                     4200
    asp.net mvc 3 Beta 1 ASPX              3200
    asp.net mvc 3 Beta 1 Razor             1700

What&#39;s wrong with razor, it&#39;s so slow?

**Update:**
I&#39;ve redone the test. All 4 test virtual directories uses the same .net 4 integrated mode app pool. All projects are done with add new empty x project and adding 1 page with 1 line text and with no code. all sites are compiled in release mode. My system is windows 7, 4 gb i7 4 cores. I&#39;ve run the test 2 times to warm up iis and these are second run results. apache bench parameters : ab -n100000 -c1000 
results:

    System         Requests per second   CPU Utilization
    ----------------------------------------------------
    asp.net 4                     4780               43%
    mcv 2                         4322               58%
    mvc 3 beta 1 aspx             2324               54%
    mvc 3 beta 1 razor            1615               54%

**Update 2** Scott Guthrie answered in his blog:

&gt; *We haven&#39;t fully optimized MVC3 yet (there is usually a lot of cache tuning we do).  We expect razor to be the same performance as the .aspx view engine before it is finally released.*

    System         Requests per second   CPU Utilization
    ----------------------------------------------------
    mvc 3 rc1 razor               1960               54%
    mvc 3 rc2 razor               2187               54%
    mvc 3 rc2 aspx                4014               58%


**Update 5** all tests done in release mode but, the problem was `debug=&quot;true&quot;` in my web.config file (that also effects release builds), after change it to false, issue fixed. And it&#39;s interesting how it&#39;s effecting only razor templating at this scale. This should be in our mind on deployments.

    System         Requests per second   CPU Utilization
    ----------------------------------------------------
    mvc 3 rc2 razor               3940               58%
    mvc 3 rc2 aspx                4100               58%

Thanks to asp.net mvc team, excellent job!

ASP.NET MVC 3 Razor performance

Is there some sort of magic I need to use to get the namespaces in the `pages/namespaces` element in the webconfig?

    &lt;pages&gt;
        &lt;namespaces&gt;
            &lt;add namespace=&quot;System.Web.Mvc&quot;/&gt;
            &lt;add namespace=&quot;System.Web.Mvc.Ajax&quot;/&gt;
            &lt;add namespace=&quot;System.Web.Mvc.Html&quot;/&gt;
            &lt;add namespace=&quot;System.Web.Routing&quot;/&gt;
            &lt;add namespace=&quot;System.Web.WebPages&quot;/&gt;
            &lt;add namespace=&quot;System.Web.Helpers&quot;/&gt;
            &lt;add namespace=&quot;MyCustomHelpers&quot;/&gt;
        &lt;/namespaces&gt;
    &lt;/pages&gt;

The above just *doesn&#39;t* want to work. I know the namespace is fine because when I put the `@using MyCustomHelpers` at the top of the page it magically works.

This is so that I can get the `Html.SomeFunction()` to work without having to put `@using` at the top of all my pages

How to add extra namespaces to Razor pages instead of @using declaration?

What is the best way to retrieve the display name attribute for an item in your model? I see a lot of people using the LabelFor helper for everything, but a label isn&#39;t appropriate if I just want to list the data out. Is there an easy way just get the Name Attribute if I just want to print it out in, say a paragraph?

Get DisplayName Attribute without using LabelFor Helper in asp.net MVC

Is there any documentation on how to use the Razor view engine using ASP.NET MVC 3?

Or any other resources?

I am trying to find it in Google and MSDN with no luck so far.


ASP.NET MVC 3 Razor documentation

Anyone out there using the new CSHTML pages feature and is finding that they prefer this new view engine syntax over the existing ASP.NET MVC default view engine or over web forms, and if so, why?  What about CSHTML gives you an advantage over MVC or web forms, or vice versa?

Just curious to hear people&#39;s take on it.

Razor/CSHTML - Any Benefit over what we have?

If I look at the Razor View Engine, then I see a very nice and concise syntax that is not particularly tied to generating html.  So I wonder, how easy would it be to use the engine outside asp.net in a &quot;normal&quot; .net environment for example to generate text, code,...

Any pointer, example, comment or explanation is welcome.

Is it possible to use Razor View Engine outside asp.net

I used to receive empty string when there was no value:

    [HttpPost]
    public ActionResult Add(string text)
    {
        // text is &quot;&quot; when there&#39;s no value provided by user
    }

But now I&#39;m passing a model

    [HttpPost]
    public ActionResult Add(SomeModel Model)
    {
        // model.Text is null when there&#39;s no value provided by user
    }

So I have to use the `?? &quot;&quot;` operator.

Why is this happening?

Why do I get null instead of empty string when receiving POST request in from Razor View?

&gt; **Possible Duplicate:**  
&gt; [What are the common workarounds for multi-line comments in Perl?](https://stackoverflow.com/questions/3608957)  

&lt;!-- End of automatically inserted text --&gt;

How do I add a multi-line comment to Perl source code?


How do I enter a multi-line comment in Perl?

I found this [old thread][1] (from over a year ago), which explains how come R doesn&#39;t support a multi-line comments (like /*  comment */ of PHP, for example).

I am wondering if this has been resolved in the past year, or if there are other alternatives?  (For example, in notepad++ with npptor, you can mark a bunch of lines and press ctrl+q to mark them all as comments, are there similar solutions for other IDE&#39;s ?)


  [1]: http://r.789695.n4.nabble.com/How-to-comment-in-R-tt882882.html#none

Is it possible to have a multi-line comments in R?

In a Java `.properties` file we can do single line comments with `#`.  

Is there any way by which we can do multi-line comments?

Can we have multiline comments in a Java properties file?

What&#39;s the character for comments in postgres?

    SELECT * FROM my_table     # pound  sign produces a syntax error

Thank you cababunga, the following appears to work:

    SELECT * FROM my_table     -- this is my comment

But this does not work:

    \dt jvcurve_thin.jvcurve_results    --  my comment #2

\dt: extra argument &quot;--&quot; ignored



Comment character/characters in postgres / postgresql / psql?

How do you write a comment in Markdown, i.e. text that is not rendered in the HTML output? I found nothing on the [Markdown project][1].


  [1]: http://daringfireball.net/projects/markdown/

Content Type	Original Author	Original Content on Stackoverflow
Question	stacker	View Question on Stackoverflow
Solution 1 - asp.net Mvc-3	JarrettV	View Answer on Stackoverflow
Solution 2 - asp.net Mvc-3	Buildstarted	View Answer on Stackoverflow
Solution 3 - asp.net Mvc-3	Sanu Uthaiah Bollera	View Answer on Stackoverflow
Solution 4 - asp.net Mvc-3	Jonathan Bates	View Answer on Stackoverflow

Razor comment syntax

asp.net Mvc-3 Problem Overview

asp.net Mvc-3 Solutions

Solution 1 - asp.net Mvc-3

Solution 2 - asp.net Mvc-3

Update

Solution 3 - asp.net Mvc-3

Solution 4 - asp.net Mvc-3

iPad browser WIDTH & HEIGHT standard

I want to execute shell commands from Maven's pom.xml

Attributions