This is called the Preview Tab feature. To change that behavior, go to:

Tools -&gt; Options -&gt; Environment -&gt; Tabs and Windows

Then look for the &quot;Preview Tab&quot; section, and uncheck the options therein:

![Options Window &gt; Environment option &gt; Tabs and Windows sub-option &gt; Preview Tab section][1]


  [1]: http://i.stack.imgur.com/iboRQ.jpg

# Option 1: Using icon in Solution Explorer

You can enable or disable the feature in Solution Explorer using the &quot;Preview Selected Items&quot; button.

![Enter image description here][1]

The icon is a `Tab` aligned to the right.

# Option 2: Using the Options window

You can enable or disable the feature by going into `Tools &gt; Options` and then `Environment &gt; Tabs and Windows`.

[![enter image description here][2]][2]


  [1]: http://i.stack.imgur.com/9jISz.png
  [2]: https://i.stack.imgur.com/V3Y3v.png

The **Single-click opens files in the preview tab** text mentioned in rubber boots&#39; answer is missing in VS 2015. Mysteriously, a search for &quot;single click&quot; still brings up the **Environment &gt; Tabs and Windows** option.

So for VS2015 and VS2017, either click the button in Vinicius&#39;s answer, or uncheck the **Preview selected files in Solution Explorer** box shown in the screenshot below.

[![enter image description here][1]][1]


  [1]: http://i.stack.imgur.com/5vh8L.png

In Visual studio 12/13, easiest way is to type &quot;single click&quot; in quick search  and than select Tabs and Windows.

And in Tabs and Windows dialogue ,uncheck &quot;Preview selected files in solutions explorer&quot;

[![enter image description here][1]][1]

[![&quot;][2]][2]


  [1]: http://i.stack.imgur.com/OPIfh.png
  [2]: http://i.stack.imgur.com/wTa6g.png

Shortcut `Ctrl+Alt+Home`.

If you press that in a document that was just opened, it will be opened permanently.

Item -&gt; right click -&gt; Open With -&gt; Source Code (Text) Editor -&gt; press Set as Default button

It&#39;s no longer there in **VS2019**. You enable/disable it through &quot;preview selected Items&quot; in Solution Explorer.

[![single click to preview source][1]][1]
[![Visual Studio 2019 editor settings][2]][2]


  [1]: https://i.stack.imgur.com/ZUZKC.png
  [2]: https://i.stack.imgur.com/AUCOU.png

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I want to add a newline in a textarea. I tried with `\n` and `&lt;br/&gt;` tag but are not working. You can see above the HTML code. Can you help me to insert a newline in a textarea? 

    &lt;textarea cols=&#39;60&#39; rows=&#39;8&#39;&gt;This is my statement one.\n This is my statement2&lt;/textarea&gt;
    
    &lt;textarea cols=&#39;60&#39; rows=&#39;8&#39;&gt;This is my statement one.&lt;br/&gt; This is my statement2&lt;/textarea&gt;



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In my Visual Studio 2012 Solution Explorer, when I single click a filename it opens it. This was different from Visual Studio 2010 (required a double click). Is there a way to make double-click the &#39;view file&#39; command?

How to stop Visual Studio from opening a file on single click?

<p>In my Visual Studio 2012 Solution Explorer, when I single click a filename it opens it. This was different from Visual Studio 2010 (required a double click). Is there a way to make double-click the 'view file' command?</p>


I&#39;m at wit&#39;s end. Visual Studio is *typically* painfully slow to debug or just plain load (&quot;start without debugging&quot;) my ASP.NET MVC sites. Not always: at first, the projects will load nice and fast, but once they load slow, they&#39;ll always load slowly after that. I could be waiting 1-2 minutes or more.

**My setup:**

I&#39;m using [Visual Studio 2012 Express][1], currently, but I&#39;ve had the same problem in Visual Studio 2010 Express as well. My solution is stored on a network drive; specifically, it&#39;s My Documents redirected to a network drive, if it matters. (It shouldn&#39;t. There are times where my site loads very fast under this setup.)

I load in Internet&amp;nbsp; Explorer 9 usually, but the same problem happens in Firefox.

This can happen in any ASP.NET MVC project I work on, and it seems to revolve around having DisplayTemplates, which all my ASP.NET MVC projects do. And it&#39;s all C# and Razor if that mattered.

### Symptoms:

The system will load my symbols *hundreds* of times. Basically, the following, but there are at least 300 such rows, each with ever-so-slightly different DLL files for the same CSHTMLs:

    &#39;iisexpress.exe&#39; (Managed (v4.0.30319)): Loaded &#39;C:\Windows\Microsoft.NET\Framework\v4.0.30319\Temporary ASP.NET Files\root\b63f8236\6775085d\App_Web_contact.cshtml.22013bb9.xighmhow.dll&#39;, Symbols loaded.
    &#39;iisexpress.exe&#39; (Managed (v4.0.30319)): Loaded &#39;C:\Windows\Microsoft.NET\Framework\v4.0.30319\Temporary ASP.NET Files\root\b63f8236\6775085d\App_Web_contact.cshtml.22013bb9.cv5hktkf.dll&#39;, Symbols loaded.
    &#39;iisexpress.exe&#39; (Managed (v4.0.30319)): Loaded &#39;C:\Windows\Microsoft.NET\Framework\v4.0.30319\Temporary ASP.NET Files\root\b63f8236\6775085d\App_Web_statuscode.cshtml.22013bb9.1o77hs8i.dll&#39;, Symbols loaded.
    &#39;iisexpress.exe&#39; (Managed (v4.0.30319)): Loaded &#39;C:\Windows\Microsoft.NET\Framework\v4.0.30319\Temporary ASP.NET Files\root\b63f8236\6775085d\App_Web_statuscode.cshtml.22013bb9.jja-77mw.dll&#39;, Symbols loaded.
    &#39;iisexpress.exe&#39; (Managed (v4.0.30319)): Loaded &#39;C:\Windows\Microsoft.NET\Framework\v4.0.30319\Temporary ASP.NET Files\root\b63f8236\6775085d\App_Web_location.cshtml.22013bb9.l_e9ev_s.dll&#39;, Symbols loaded.
    &#39;iisexpress.exe&#39; (Managed (v4.0.30319)): Loaded &#39;C:\Windows\Microsoft.NET\Framework\v4.0.30319\Temporary ASP.NET Files\root\b63f8236\6775085d\App_Web_location.cshtml.22013bb9.b4n59gom.dll&#39;, Symbols loaded.

In the above, I&#39;ve got three DisplayTemplates: &quot;Contact&quot;, &quot;Location&quot;, and &quot;StatusCode&quot;. It appears that IIS is loading symbols twice for each time the display template gets called. Thus, if I&#39;m displaying a table of 100 entries that call all three of these display templates, it&#39;s 600 separate symbols loaded.

This isn&#39;t a fast operation either. The log files that IIS generates take about 200&amp;nbsp; ms for each symbol to load. Thus, super-long delays.

**What I&#39;ve Tried:**

 - Debug or Release version, it doesn&#39;t matter.
 - Putting my project on a full IIS implementation on a web server runs it super fast with no problems.
 - Cassini, IIS&amp;nbsp; Express 7.5, and IIS&amp;nbsp; Express 8.0 all have the problem.
 - **Delete All Breakpoints does nothing.**
 - *Clean Solution*, or deleting the .suo also do nothing.
 - If I repair IIS&amp;nbsp; Express/ delete the `My Docs\IISExpress` folder, or repair/reinstall Visual Studio → the issue MAY go away, but only for a while before it comes right back.

Any advice at all is appreciated.

To answer more questions, yes my machine definitely has horsepower. The infuriating thing is that the same project, with NOTHING altered, can sometimes load very quickly, typically after I repair IIS&amp;nbsp; Express and delete the `My Docs\IISExpress` folder. Eventually, &quot;something&quot; happens and it&#39;s down to 2 minutes to load again. What I&#39;m working on is not a complicated project. No external libraries or dependencies and my VS.NET has no add-ons whatsoever.

Of note, this machine has Symantec Endpoint Protection, which has a history of causing havoc. But disabling it outright (it&#39;s good to be an administrator) did not fix the problem.

I have a theory at this point. I&#39;m thinking this is all because I&#39;m working off a redirected folder off a network share. While the debugger was going through its hundreds of &quot;loaded symbols&quot; lines, I paused to see what it was doing. It was in my code, loading the DisplayTemplate I had. Stepping into the template output this:

    Step into: Stepping over non-user code &#39;System.Threading.WaitHandle.InternalWaitOne&#39;
    Step into: Stepping over non-user code &#39;System.Threading.WaitHandle.WaitOne&#39;
    Step into: Stepping over non-user code &#39;System.CodeDom.Compiler.Executor.ExecWaitWithCaptureUnimpersonated&#39;
    Step into: Stepping over non-user code &#39;System.CodeDom.Compiler.Executor.ExecWaitWithCapture&#39;
    Step into: Stepping over non-user code &#39;Microsoft.CSharp.CSharpCodeGenerator.FromFileBatch&#39;
    Step into: Stepping over non-user code &#39;Microsoft.CSharp.CSharpCodeGenerator.System.CodeDom.Compiler.ICodeCompiler.CompileAssemblyFromFileBatch&#39;
    Step into: Stepping over non-user code &#39;System.Web.Compilation.AssemblyBuilder.Compile&#39;
    &#39;iisexpress.exe&#39; (Managed (v4.0.30319)): Loaded &#39;C:\Windows\Microsoft.NET\Framework\v4.0.30319\Temporary ASP.NET Files\root\b63f8236\6775085d\App_Web_statuscode.cshtml.22013bb9.bciuyg14.dll&#39;, Symbols loaded.
    Step into: Stepping over non-user code &#39;System.Web.Compilation.BuildManager.CompileWebFile&#39;
    Step into: Stepping over non-user code &#39;System.Web.Compilation.BuildManager.GetVPathBuildResultInternal&#39;
    Step into: Stepping over non-user code &#39;System.Web.Compilation.BuildManager.GetVPathBuildResultWithNoAssert&#39;
    Step into: Stepping over non-user code &#39;System.Web.Compilation.BuildManager.GetVirtualPathObjectFactory&#39;
    Step into: Stepping over non-user code &#39;System.Web.Mvc.BuildManagerWrapper.System.Web.Mvc.IBuildManager.FileExists&#39;
    Step into: Stepping over non-user code &#39;System.Web.Mvc.VirtualPathProviderViewEngine.GetPathFromGeneralName&#39;
    Step into: Stepping over non-user code &#39;System.Web.Mvc.VirtualPathProviderViewEngine.FindPartialView&#39;
    Step into: Stepping over non-user code &#39;System.Web.Mvc.ViewEngineCollection.Find&#39;
    Step into: Stepping over non-user code &#39;System.Web.Mvc.ViewEngineCollection.FindPartialView&#39;
    Step into: Stepping over non-user code &#39;System.Web.Mvc.Html.TemplateHelpers.ActionCacheViewItem.Execute&#39;
    &#39;iisexpress.exe&#39; (Managed (v4.0.30319)): Loaded &#39;C:\Windows\Microsoft.NET\Framework\v4.0.30319\Temporary ASP.NET Files\root\b63f8236\6775085d\App_Web_statuscode.cshtml.22013bb9.kwj3uqan.dll&#39;, Symbols loaded.
    Step into: Stepping over non-user code &#39;System.RuntimeType.CreateInstanceSlow&#39;
    Step into: Stepping over non-user code &#39;System.Web.Mvc.DependencyResolver.DefaultDependencyResolver.GetService&#39;
    Step into: Stepping over non-user code &#39;System.Web.Mvc.BuildManagerViewEngine.DefaultViewPageActivator.Create&#39;
    Step into: Stepping over non-user code &#39;System.Web.Mvc.BuildManagerCompiledView.Render&#39;

It looks like Visual Studio is recompiling my display template **every time** it&#39;s called, which is again, hundreds of times. My theory is that Visual Studio compiles the file, saves it to the network share, then somehow stamps a new time on it, and Visual Studio then thinks the file has changed. Thus, Visual Studio recompiles it yet again. Only a theory though; I really have no clue.

For one, apparently, I have offline files (this is a desktop computer in an office; I couldn&#39;t care less). I&#39;m going to disable, reboot, and retry tomorrow.

Plus, moving my project, as is, to the local C: fixes it. It loads very quickly. But this is not ideal in a work environment. I lose Previous Versions, my code isn&#39;t backed up at all unless I manually copy it, and it&#39;s no longer shared with anyone.

I can make do with copying it back and forth from C to the network share if it comes to it. It&#39;s much more annoying to wait two minutes for every page to load.

  [1]: http://en.wikipedia.org/wiki/Microsoft_Visual_Studio_Express


Visual Studio debugging/loading very slow

I&#39;ve been looking to find a CLEAN solution to completely and ultimately remove Visual Studio 2010 from my computer. When you install Visual Studio, it also installs a bunch of programs (about 55) in the add/remove programs panel (`appwiz.cpl`). 

I&#39;ve already tried a small utility made by Microsoft but it does almost nothing. 

I&#39;m really looking now for a better way to uninstall any version of Microsoft Visual Studio. 
Because I have a lot of computers, I&#39;m often switching to a version or another or I just decide that I don&#39;t need it anymore on one computer to get back some space.

Really, what&#39;s the best solution? If there isn&#39;t one, why haven&#39;t Microsoft developed one that is actually working well?

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I have installed VS2012 Ultimate on a fresh PC. I tried adding the Crystal Reports file in my project but there is no crystal report .crt Item avaliable into Add New Item menu of the VS2012

Is there a version for VS2012? or do I have to install an extra setup file for crystal reports which is redundant since I already have VS2012 installed.

Crystal Reports for VS2012 - VS2013 - VS2015 - VS2017 - VS2019

Just tried to run an application via the following:

![enter image description here][1]

I have browsed to the directory with an app `WindowsService1.exe` in it, then tried the command `Installutil WindowsService1.exe` but got the following error...

![enter image description here][2]

As VS has only been installed for a day or two I&#39;m worried that something may be wrong with that install as it should recognise installutil.

Are there some basic diagnostics I can perform to ensure that VS Command Prompt is finding all the programs that it should ?

**EDIT**

If i run `PATH` in the command prompt I see the following:

![enter image description here][3]


  [1]: http://i.stack.imgur.com/4jOEK.png
  [2]: http://i.stack.imgur.com/rcR8G.png
  [3]: http://i.stack.imgur.com/4oCa8.png

Content Type	Original Author	Original Content on Stackoverflow
Question	John Livermore	View Question on Stackoverflow
Solution 1 - Visual Studio	rubber boots	View Answer on Stackoverflow
Solution 2 - Visual Studio	Vinicius Rocha	View Answer on Stackoverflow
Solution 3 - Visual Studio	Christopher Schneider	View Answer on Stackoverflow
Solution 4 - Visual Studio	Anwar Ul-Haq	View Answer on Stackoverflow
Solution 5 - Visual Studio	Josip Ivic	View Answer on Stackoverflow
Solution 6 - Visual Studio	userom	View Answer on Stackoverflow

How to stop Visual Studio from opening a file on single click?

Visual Studio Problem Overview

Visual Studio Solutions

Solution 1 - Visual Studio

Solution 2 - Visual Studio

Option 1: Using icon in Solution Explorer

Option 2: Using the Options window

Solution 3 - Visual Studio

Solution 4 - Visual Studio

Solution 5 - Visual Studio

Solution 6 - Visual Studio

How to add a new line in textarea element?

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Attributions