You have to use @@ to escape the @ symbol.

One important thing to notice is that you DO NOT need to escape the @ symbol when it exists within an email address. Razor should be smart enough to figure that out on its own.


  

If you are adding Twitter meta tags

and your Twitter username is, say, `foobar`

it should look like this

    &lt;meta name=&quot;twitter:site&quot; content=@(&quot;@foobar&quot;)&gt;

if you need to comment @ symbols in css code and just @@ wont work, use this:

    @(&quot;@@font-face&quot;){ ... css ...}

I had yet another odd case: pass `&#39;@&#39; + @Model.SomeProperty` to a link href.

The best solution for this case was given IMO in [this answer](https://stackoverflow.com/a/14583891/4419939) to a similar question. Both `@@` and `@:` didn&#39;t work while using the html code `&amp;#64;` would complicate things.

So, my code was `&lt;a href=&quot;~/path/?query=@(&#39;@&#39;)@Model.SomePropery&quot;&gt;`

`@Html.Raw(&#39;@&#39;)@Model.SomePropery` would have worked as well. 

If you are adding Schema.org JSON-LD Tags, @Matt&#39;s answer worked for me:

      ....
      @(&quot;@context&quot;): &quot;https://schema.org&quot;,
      ....

I use **pdftk** to compress a pdf using the following command line

    pdftk file1.pdf output file2.pdf compress
It works as the weight of my file decreased. 


Are there [options] to change the compression???

Or maybe other solutions to compress my file? It is heavy because some graphics have **a lot of points**. Is there a way to convert these graphs to jpg for instance and adapt the compression?

pdftk compression option

When I run:

    git push origin master

...what is the meaning of `origin` in this context?

What&#39;s the meaning of &#39;origin&#39; in &#39;git push origin master&#39;

I&#39;m trying to output some Twitter handles in ASP.NET MVC3 in conjunction with the Twitter @Anywhere API, and I haven&#39;t been able to figure out how to actually escape the &quot;@&quot; symbol in a Razor view.

Does anyone know what the syntax is for escaping the &quot;@&quot; character in Razor? 

I&#39;ve tried using `&lt;text&gt;&lt;/text&gt;` and that results in a JIT error.

Razor ViewEngine: How do I escape the &quot;@&quot; symbol?

I'm trying to output some Twitter handles in ASP.NET MVC3 in conjunction with the Twitter @Anywhere API, and I haven't been able to figure out how to actually escape the "@" symbol in a Razor view.
Does anyone know what the syntax is for escaping the "@" character in Razor?
I've tried using <code>&#x3C;text>&#x3C;/text></code> and that results in a JIT error.

I have a div element on my page that I wish to show/hide based on a session value in my code-behind. How can I do this?

How to hide a div from code (c#)

I have a solution with some projects. There are several break-points in different projects. I want to trace the first thread hit one of these break-points and continue tracing that single thread despite of other threads entering the same code-blocks.

I know this is possible through defining a condition on the break-point, that is, thread name = ... or thread Id = ... but my case is a heavy loaded [ASP.NET][1] application and as soon as I attach to `w3wp.exe` many threads will hit the break-points. I need some thing like a `ThreadLocal&lt;break-point&gt;`.

Is it possible? If so, how?

  [1]: http://en.wikipedia.org/wiki/ASP.NET


How to debug a single thread in Visual Studio?

I am using the Facebook comments plugin on a blog I am building. It has some FBXML tags that are interpreted by the facebook javascript that is referenced on the page.

This all works fine, but I have to pass in the current, fully-qualified URL to the plugin.

    &lt;div style=&quot;width: 900px; margin: auto;&quot;&gt;
        &lt;div id=&quot;fb-root&quot;&gt;&lt;/div&gt;
        &lt;fb:comments href=&quot;URL HERE&quot; num_posts=&quot;10&quot; width=&quot;900&quot;&gt;&lt;/fb:comments&gt;
    &lt;/div&gt;

What is the best way to get the URL of the current page? The request URL.

### Solution ###

Here is the final code of my solution:

    &lt;fb:comments href=&quot;@Request.Url.AbsoluteUri&quot; num_posts=&quot;15&quot; width=&quot;900&quot;&gt;&lt;/fb:comments&gt;

How to get current page URL in MVC 3

So in my code I want to detect if my login page is being called http, and redirect it to https.

I know there are non code ways to skin this cat, but for frustrating technical reasosn I&#39;m backed into doing it in code.

                if (!Request.IsSecureConnection)
                {
                    string redirectUrl = Request.Url.ToString().Replace(&quot;http:&quot;, &quot;https:&quot;);
                    Response.Redirect(redirectUrl);
                }

So I drop this in my `Page_Load(...)`, make sure my debugger uses real IIS, not VS2008s IIS, and hit debug.

Inthe debugger, waltz along, hit 
Response.Redirect(&quot;https://localhost/StudentPortal3G/AccessControl/AdLogin.aspx&quot;), 
hit f5.

Get &quot;Internet Explorere Cannot Display the webpage, url is HTTP, not HTTPS.
Not getting an informative error... same thing happens not running in the debugger.

So what am I missing? it does not appear to be rocket science, I&#39;ve seen similar code on lots of blogs...

What am I doing wrong? I figure it has to be a totally obvious Rookie mistake, but I&#39;m not seeing it.

asp.net c# redirecting from http to https

I use this code to get the groups of the current user. But I want to manually give the user and then get his groups. How can I do this?

    using System.Security.Principal;

    public ArrayList Groups()
    {
        ArrayList groups = new ArrayList();

        foreach (IdentityReference group in System.Web.HttpContext.Current.Request.LogonUserIdentity.Groups)
        {
            groups.Add(group.Translate(typeof(NTAccount)).ToString());
        }

        return groups;
    }

How to get the groups of a user in Active Directory? (c#, asp.net)

I am learning about &lt;a href=&quot;http://en.wikipedia.org/wiki/Progressive_enhancement&quot;&gt;Progressive Enhancement&lt;/a&gt; and I have a question about AJAXifying views. In my MVC 3 project I have a layout page, a viewstart page, and two plain views.

The viewstart page is in the root of the Views folder and thus applies to all views. It specifies that all views should use `_Layout.cshtml` for their layout page. The layout page contains two navigation links, one for each view. The links use `@Html.ActionLink()` to render themselves to the page.

Now I have added jQuery and want to hijack these links and use Ajax to load their content on the page dynamically.

    &lt;script type=&quot;text/javascript&quot;&gt;
        $(function () {
            $(&#39;#theLink&#39;).click(function () {
                $.ajax({
                    url: $(this).attr(&#39;href&#39;),
                    type: &quot;GET&quot;,
                    success: function (response) {
                        $(&#39;#mainContent&#39;).html(response);
                    }
                });
                return false;
            });
        });
    &lt;/script&gt;

There are two ways I can think of to do this, but I don&#39;t particularly like either one:

1) I can take the entire View&#39;s contents and place them in a partial view, then have the main view call the partial view when it is rendered. That way, using `Request.IsAjaxRequest()` in the controller, I can return `View()` or return `PartialView()` based on whether or not the request is an Ajax request. I can&#39;t return the regular view to the Ajax request because then it would use the layout page and I&#39;d get a second copy of the layout page injected. However, I don&#39;t like this because it forces me to create empty views with just a `@{Html.RenderPartial();}` in them for the standard GET requests.

        public ActionResult Index()
        {
            if (Request.IsAjaxRequest())
                return PartialView(&quot;partialView&quot;);
            else
                return View();
        }

Then in Index.cshtml do this:

    @{Html.RenderPartial(&quot;partialView&quot;);}

2) I can remove the layout designation from _viewstart and specify it manually when the request is NOT Ajax:

        public ActionResult Index()
        {
            if (Request.IsAjaxRequest())
                return View(); // Return view with no master.
            else
                return View(&quot;Index&quot;, &quot;_Layout&quot;); // Return view with master.
        }

Does anyone have a better suggestion? Is there a way to return a view without its layout page? It would be much easier to explicitly say &quot;don&#39;t include your layout&quot; if it is an ajax request, than it would be to explicitly include the layout if it&#39;s not an ajax.

MVC 3: How to render a view without its layout page when loaded via ajax?

I couldn&#39;t find any real sources for this. I&#39;m building a site in ASP.NET MVC 3 and would like to take advantage of the Markdown editor that Stack Overflow uses. Does anybody have a good tutorial?

Where do you download the latest markdown? What language is it written in? Where would I start in integrating this into an MVC 3 project? Even after all the searching and reading I&#39;ve done I&#39;m still pretty confused.

I came across [this site](http://daringfireball.net/projects/markdown/). But this seems outlandishly old and it would seem I would have to learn a little something about CGI and Perl which I have absolutely no experience with. A JavaScript/jQuery version would be splendid.

# Update

I noticed this question is getting a fair amount of views so I decided to update it with some helpful references. I managed to get a Markdown editor working nicely on my website, and I wrote a few blogs about it.

- [MarkdownSharp and Encoded HTML](https://www.chevtek.io/mardownsharp-and-encoded-html/)
- [JQuery WMD Plugin](https://www.chevtek.io/jquery-wmd-plugin/)
- [Finding and implementing the WMD editor](https://www.chevtek.io/finding-and-implementing-the-wmd-editor/)

How to use ASP.NET MVC 3 and Stack Overflow&#39;s Markdown

My main motivation for trying to do this is to get Javascript that is only required by a partial at the bottom of the page with the rest of the Javascript and not in the middle of the page where the partial is rendered. 

Here&#39;s a simplified example of what I&#39;m trying to do:

Here is the layout with a Scripts section right before the body.

    &lt;!DOCTYPE html&gt;
    &lt;html&gt;
    &lt;head&gt;
        &lt;title&gt;@ViewBag.Title&lt;/title&gt;
        &lt;link href=&quot;@Url.Content(&quot;~/Content/Site.css&quot;)&quot; rel=&quot;stylesheet&quot; type=&quot;text/css&quot; /&gt;    
    &lt;/head&gt;
    
    &lt;body&gt;
        @RenderBody()
        &lt;script src=&quot;@Url.Content(&quot;~/Scripts/jquery-1.4.4.min.js&quot;)&quot; type=&quot;text/javascript&quot;&gt;&lt;/script&gt;
        @RenderSection(&quot;Scripts&quot;, false)
    &lt;/body&gt;
    &lt;/html&gt;

Here&#39;s an example view using this layout. 

    &lt;h2&gt;This is the view&lt;/h2&gt;
    
    @{Html.RenderPartial(&quot;_Partial&quot;);}
    
    @section Scripts {
    &lt;script type=&quot;text/javascript&quot;&gt;
            alert(&quot;I&#39;m a view.&quot;);
    &lt;/script&gt;
    }

And here&#39;s the partial being rendered from the view.

    &lt;p&gt;This is the partial.&lt;/p&gt;
    
    @* this never makes it into the rendered page *@
    @section Scripts {
    &lt;script type=&quot;text/javascript&quot;&gt;
        alert(&quot;I&#39;m a partial.&quot;); 
    &lt;/script&gt;
    }

In this example, the markup specified in the view is placed into the section, but the markup from the partial is not. Is it possible to populate a section from a partial view with Razor? If not, what are some other methods of getting Javascript that&#39;s only needed by partials at the bottom of the page without including it globally?

Populate a Razor Section From a Partial

OK, been trying things for hours and could use some help. I&#39;m trying to implement a page in MVC 3 that has &quot;back&quot; and &quot;next&quot; buttons. When the back button is clicked I want to disable client-side MVC validation from running so that my action method will run and send the user to the previous logical web page. I&#39;ve tried this:

    &lt;script type=&quot;text/javascript&quot;&gt;
      document.getElementById(&quot;backButton&quot;).disableValidation = true;
    &lt;/script&gt;

and this:

    &lt;input type=&quot;submit&quot; name=&quot;backButton&quot; value=&quot;← Back&quot; 
     title=&quot;Go back to step 1.&quot; disableValidation=&quot;true&quot; /&gt;

But no matter what, the cilent-side validation JavaScript kicks in and won&#39;t let the button do its post-back. I&#39;m thinking that `disableValidation` only works in MVC 2 perhaps, and I&#39;m supposed to be doing something else in MVC 3, but cannot seem to find any examples.

  [1]: http://instagram.com/thevinaychoudhary

Disable client-side validation in MVC 3 &quot;cancel&quot; submit button

I was wondering if it is possible to disable the Required validation attribute in certain controller actions. I am wondering this because on one of my edit forms I do not require the user to enter values for fields that they have already specified previously. However I then implement logic that when they enter a value it uses some special logic to update the model, such as hashing a value etc.

Any sugestions on how to get around this problem?

EDIT:&lt;br/&gt;
And yes client validation is a problem here to, as it will not allow them to submit the form without entering a value.

Disable Required validation attribute under certain circumstances

I am making an ASP.NET MVC application with the razor engine.&lt;br /&gt;
And I was wondering if it&#39;s possible to use [Regions][1] in a view.

something like:

    #region blabla
        &lt;p&gt;@Model.Name&lt;/p&gt;
        &lt;p&gt;...&lt;/p&gt;
    #endregion

This does not work. Is there an alternative?

  [1]: http://msdn.microsoft.com/en-us/library/9a1ybwek.aspx

Regions In ASP.NET Views?

I have added a new Area to my MVC3 project and I am trying to link from the _Layout page to the new Area. I have added an Area called &#39;Admin&#39; that has a controller &#39;Meets&#39;.

I used the visual studio designer to add the area so it has the correct area registration class etc, and the global.asax file is registering all areas.

However, when I use the following 2 action links in a page in the root, I run into a few problems:

    @Html.ActionLink(&quot;Admin&quot;, &quot;Index&quot;, &quot;Meets&quot;, new { area = &quot;Admin&quot; }, null)
    @Html.ActionLink(&quot;Admin&quot;, &quot;Index&quot;, &quot;Meets&quot;, new { area = &quot;&quot; }, null)

When clicking both links, I am taken to the Meets controller in the Admin area, where the application then proceeds to throw an error saying it cannot find the Index page (even though the Index page is present in the Views folder in the Area sub-directory.

The href for the 1st link looks like this:

`http://localhost/BCC/Meets?area=Admin`

And the href for the 2nd link looks like this:

`http://localhost/BCC/Meets`

Also if I hit the link that I expect to be created:

`http://localhost/BCC/Admin/Meets`

I just get a resource cannot be found error.  All very perplexing!  I hope someone can help...


ASP.NET MVC `Html.ActionLink` between &quot;Areas&quot;

I have declared a long string in `string.xml` of an application.

Declared like this 

    &lt;string name=&quot;terms&quot;&gt;PLEASE READ THESE TERMS OF USE CAREFULLY  BY ACCESSING THIS .................&lt;/string&gt;

But this gives the following error :

    error: Apostrophe not preceded by \ (in PLEASE READ THESE TERMS OF USE CAREFULLY

Error in strings.xml file in Android

I&#39;ve got a (generated) literal string in C++ that may contain characters that need to be escaped using the `\x` notation. For example:

    char foo[] = &quot;\xABEcho&quot;;

However, g++ (version 4.1.2 if it matters) throws an error:

    test.cpp:1: error: hex escape sequence out of range

The compiler appears to be considering the `Ec` characters as part of the preceding hex number (because they look like hex digits). Since a four digit hex number won&#39;t fit in a `char`, an error is raised. Obviously for a wide string literal `L&quot;\xABEcho&quot;` the first character would be U+ABEC, followed by `L&quot;ho&quot;`.

It seems this has changed sometime in the past couple of decades and I never noticed. I&#39;m almost certain that old C compilers would only consider *two* hex digits after `\x`, and not look any further.

I can think of one workaround for this:

    char foo[] = &quot;\xAB&quot;&quot;Echo&quot;;

but that&#39;s a bit ugly. So I have three questions:

- When did this change?

- Why doesn&#39;t the compiler only accept &gt;2-digit hex escapes for wide string literals?

- Is there a workaround that&#39;s less awkward than the above?

When did C++ compilers start considering more than two hex digits in string literal character escapes?

If I&#39;m in an RHTML view in Rails, it is easy to URL-escape something:

    &lt;a href=&quot;/redirect?href=&lt;%=u target %&gt;&quot;&gt;Foo&lt;/a&gt;

How do I do this in a string? I&#39;d like to do something like this:

    &lt;% redirect_href = &quot;/redirect?#{url_escape target}&amp;amp;foo=bar&amp;amp;baz=some_other_stuff&quot; -%&gt;
    &lt;a href=&quot;&lt;%= redirect_href =&gt;&quot;&gt;Foo&lt;/a&gt;

This must be trivial, right?

How do I URL-escape a string in Rails?

My question is a simple one, and it is about regular expression escaping. Do you have to escape a forward slash `/` in a regular expression? And how would you go about doing it?

Escaping a forward slash in a regular expression

How can I convert an international (e.g. Russian) String to `\u` numbers (unicode numbers)  
e.g. `\u041e\u041a` for `OK` ?

Content Type	Original Author	Original Content on Stackoverflow
Question	Aaronontheweb	View Question on Stackoverflow
Solution 1 - asp.net	JasCav	View Answer on Stackoverflow
Solution 2 - asp.net	Matt	View Answer on Stackoverflow
Solution 3 - asp.net	Lin-Art	View Answer on Stackoverflow
Solution 4 - asp.net	Tiberiu Craciun	View Answer on Stackoverflow
Solution 5 - asp.net	JClarkCDS	View Answer on Stackoverflow

Razor ViewEngine: How do I escape the "@" symbol?

asp.net Problem Overview

asp.net Solutions

Solution 1 - asp.net

Solution 2 - asp.net

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Solution 4 - asp.net

Solution 5 - asp.net

What's the meaning of 'origin' in 'git push origin master'

pdftk compression option

Attributions