Not many people seem to know this, but this is perfectly possible, though I admit it&#39;s not very obvious.
Here&#39;s what you do:

- suppose your current project is A, and it&#39;s output is c:\bin\my.exe
- add an empty project to the solution for A, call it &#39;Dummy&#39;
- under Dummy&#39;s Project *Properties-&gt;Debugging* set the *Command* to point c:\bin\my.exe
- under *Solution Properties-&gt;Configuration Manager*, uncheck all builds of the Dummy project so VS won&#39;t try to build it (building an empty project fails)
- under *Solution Properties-&gt;Startup Project*, select **Multiple Startup Projects** and set the **Action** for both A and Dummy to *Start*
- now hit F5 and your exe will be launched twice, each under a seperate debugging instance. (as you will be able to see in the *Debug-&gt;View-&gt;Processes* window)


You can use &quot;Multiple Startup Projects&quot; feature, but avoid creating dummy projects by hand: just add your debuggee executable into the solution directly:

* Solution &gt; Add existing project &gt; Path to .exe

If you neeed several instances, Visual Studio won&#39;t allow you to add the same executable twice, but adding a symlink to it with another name works as expected.

[MSDN: How to: Debug an Executable Not Part of a Visual Studio Solution][1]



  [1]: https://msdn.microsoft.com/en-us/library/0bxe8ytt.aspx

Is Visual Studio 2013 this is even easier!

Project-&gt; Properties -&gt; Debug -&gt; check &quot;Start external program&quot; and click the ... button, navigate to your .exe of the other program. 

Then Make sure in your Solution -&gt; Properties -&gt; MultipleStartup Projects that it&#39;s checked.



You can run two instances of your application from where it is built; example: d:\test\bin\debug\app.exe and attach both instances to the Visual&amp;nbsp;Studio&amp;nbsp;2010 debugger.


As I deploy my web site, I found that I could convert a folder into a virtual folder or web application, I am totally confused about these 2 concepts. 

- Why there are two different types?

- What&#39;s the purpose of each?



What&#39;s the difference between Web App and Virtual Folder in the context of IIS 7.x?

I have `buf=&quot;\x00\xFF\xFF\xFF\xFF\x00&quot;`

how can i get the `&quot;\xFF\xFF\xFF\xFF&quot;` randomized?


random byte string in python

I wonder if I can run multiple instances (right now two instances) of my application in debug mode by doing a simple click or set a key for that...


Run multiple instances with one click in Visual Studio

<p>I wonder if I can run multiple instances (right now two instances) of my application in debug mode by doing a simple click or set a key for that...</p>


I am unable to get IIS Express to accept secure connections for a VS2010 MVC3 project that I&#39;m developing. I can get it to accept unsecure connections on port 80, but not secure on port 443.

I&#39;ve taken the following steps, based on googling:

1) Located the SHA1 thumbprint for my IIS Express Server self-signed certificate via executing the following on a VS2010 commandline:

    certmgr.exe /c /s /r localMachine MY

The result was 9B088F80 A4FC3141 28F62890 70BA1FC4 49FDD009. I learned later that I need to delete the spaces when using the thumbprint.

2) Deleted whatever certificate was linked to port 443 by executing the following on an elevated commandline prompt:

    netsh http delete sslcert ipport=0.0.0.0:443

3) Generated a new GUID by running Create GUID off the VS2010 Tools menu. In my case I got
B0421A5B-FF61-47CE-892D-11AA3A9C7D2A.

4) Installed the self-signed certificate to port 443 by executing the following on an elevated commandline prompt:

    netsh http add sslcert ipport=0.0.0.0:443 certhash=9B088F80A4FC314128F6289070BA1FC449FDD009 appid={B0421A5B-FF61-47CE-892D-11AA3A9C7D2A}

5) Modified the ACL by running the following from an elevated commandline prompt:

    netsh http add urlacl url=https://localhost:443/ user=everyone

6) Modified the application.config file for IIS Express by adding a binding for port 443 and the https protocol. The sites section for the file ended up looking like this:

            &lt;sites&gt;
            &lt;site name=&quot;Development Web Site&quot; id=&quot;1&quot; serverAutoStart=&quot;true&quot;&gt;
                &lt;application path=&quot;/&quot;&gt;
                    &lt;virtualDirectory path=&quot;/&quot; physicalPath=&quot;%IIS_BIN%\AppServer\empty_wwwroot&quot; /&gt;
                &lt;/application&gt;
                &lt;bindings&gt;
                    &lt;binding protocol=&quot;https&quot; bindingInformation=&quot;*:443:localhost&quot; /&gt;
                    &lt;binding protocol=&quot;http&quot; bindingInformation=&quot;*:80:localhost&quot; /&gt;
                &lt;/bindings&gt;
            &lt;/site&gt;
            &lt;siteDefaults&gt;
                &lt;logFile logFormat=&quot;W3C&quot; directory=&quot;%IIS_USER_HOME%\Logs&quot; /&gt;
                &lt;traceFailedRequestsLogging directory=&quot;%IIS_USER_HOME%\TraceLogFiles&quot; enabled=&quot;true&quot; maxLogFileSizeKB=&quot;1024&quot; /&gt;
            &lt;/siteDefaults&gt;
            &lt;applicationDefaults applicationPool=&quot;IISExpressAppPool&quot; /&gt;
            &lt;virtualDirectoryDefaults allowSubDirConfig=&quot;true&quot; /&gt;
        &lt;/sites&gt;

7) Restarted the http service by executing the following at an elevated commandline prompt:

    net stop http
    net start http

8) Changed the Project URL on the Web tab of my MVC project&#39;s Property page to the following:

    http://localhost/

Saving the project property page triggered a reconfiguration of the server after I made this change.

When I launch the MVC app from within VS2010 it correctly ties back to http://localhost (on port 80, the default; I haven&#39;t included all the steps for getting IIS Express to work with unsecure/normal connections on port 80, but they&#39;re essentially steps 5 thru 7, but focusing on http and port 80, not https and port 443). 

However, trying to transition to any action that requires https gets me a &quot;server refused connection&quot; error.

What am I doing wrong?

IIS Express -- Getting SSL to Work

Does anyone else have this problem?

The full message in the status bar says, 
&gt;Loading toolbox content from package &#39;Microsoft.VisualStudio.IDE.ToolboxControlsInstaller.ToolboxInstallerPackage&#39; {D766DAA8-F81E-4621-9184-F21C7F389796}

This usually happens whenever I open a xaml file and VS sits there, unresponsive, for about 2 minutes.

Constantly getting &quot;Loading toolbox content from package&quot; in Visual Studio AND IT TAKES FOREVER!

I have a solution with lots of solution folders with lots of c# projects inside them.

**How do I build/rebuild only one of those projects from command line?**

I guess there&#39;s some way to do it using `msbuild` but I don&#39;t know anything about msbuild.

Thanks!


Build only one project in a solution from command line

I have a WCF Data Service project built with Visual Studio 2010, which was working fine. All of a sudden, it didn&#39;t compile anymore. It was giving me messages like:

&gt; Error 7   The type or namespace name &#39;Services&#39; does not exist in the namespace &#39;System.Data&#39; (are you missing an assembly reference?)    C:\U...s\Visual Studio 2010\Projects\...\DataService.cs ...
&gt;
&gt;Error  8   The type or namespace name &#39;Linq&#39; does not exist in the namespace &#39;System&#39; (are you missing an assembly reference?) DependencyResolver.cs   3   14
&gt;
&gt;Error  10  The type or namespace name &#39;Web&#39; does not exist in the namespace &#39;System.ServiceModel&#39; (are you missing an assembly reference?) 
&gt;
&gt;Error  12  The type or namespace name &#39;DataService&#39; could not be found (are you missing a using directive or an assembly reference?)

How can I fix it?


Type or namespace name does not exist

I have a C# application that must run in x64 mode.  The problem is I try to create unit tests that run methods in the x64 application and the unit test project won&#39;t even build.  I get the following error when it tries to build.

&gt; Error loading C:\.....\bin\x64\Debug\....UnitTests.dll: Unable to load
&gt; the test container &#39;C:\.....\bin\x64\Debug\....UnitTests.dll&#39; or one
&gt; of its dependencies. If you build your test project assembly as a 64
&gt; bit assembly, it cannot be loaded. When you build your test project
&gt; assembly, select &quot;Any CPU&quot; for the platform. To run your tests in 64
&gt; bit mode on a 64 bit processor, you must change your test settings in
&gt; the Hosts tab to run your tests in a 32 bit process. Error details:
&gt; Could not load file or assembly
&gt; &#39;file:///C:\.....UnitTests\bin\x64\Debug\....UnitTests.dll&#39; or one of
&gt; its dependencies. An attempt was made to load a program with an
&gt; incorrect format.

I have tried to change the unit test to x64 and also Any CPU and still cannot get it to run.  Is there any fix for this?

How do I get unit tests to run on a x64 platform

I struggled finding a how-to which provides a stable solution for using Qt with Visual Studio 2010, so after collecting all the bits of information and some trial and error, I would like to write my solution into a guide.

The problem, or why is it not possible to use prebuilt binaries?
-------------------------------

It seems that using binaries built for Visual Studio 2008 might work in some special cases, but I found them not to work. In my case they compiled OK, but they produce runtime errors, like this:

![problem2][9]

or when started from Visual Studio 2010:

![problem][10]

**Update**: I found a blog post analysing why does it work for some people, while it does not for others. In one word, it depends on whether you have Visual Studio 2008 installed on the same machine, or not.
http://blog.paulnettleship.com/2010/11/11/troubleshooting-visual-studio-2010-and-qt-4-7-integration/

&gt;  The most important thing (that I stupidly didn’t realize) was the fact that you CANNOT use the Visual Studio 2008 compiled libraries and dll’s (available on the Qt webpage) if you don’t have Visual Studio 2008 installed. The reason is because the Qt SDK you download is a debug build which is dependant on the VC9.0 DebugCRT, meaning it needs the Visual C++ 2008 Debug Runtime installed, which is NOT available as a redistributable installer. The only way to install the DebugCRT is to install the entirety of Visual Studio 2008.

  [9]: http://i.stack.imgur.com/LvWOd.png
  [10]: http://i.stack.imgur.com/cXTle.png


How to build Qt for Visual Studio 2010

I&#39;ve got an asp.net mvc deployment package that I&#39;m trying to build with team city. The package builds without any problems, but the bin folder contains file that are not needed (and cause the site to fail when present). 

If I build the same package from visual studio the additional files are not present.

The additional files are:

    Microsoft.VisualBasic.Activities.Compiler.dll
    mscorlib.dll
    normidna.nlp
    normnfc.nlp
    normnfd.nlp
    normnfkc.nlp
    normnfkd.nlp
    System.Data.dll
    System.Data.OracleClient.dll
    System.EnterpriseServices.dll
    System.EnterpriseServices.Wrapper.dll
    System.Transactions.dll
     
What can I do to prevent these additional assemblies and .nlp files from being included in the package?

**UPDATE**

After a bit more digging through log files I&#39;ve found that the `_CopyFilesMarkedCopyLocal` build task is copying the files into the bin directory. The odd thing is that the assemblies are not marked as copy local.

Why does the deployment package from my buildserver have additional assemblies?

What I want to do is very simple, yet can&#39;t find the way to do it.  
In my projects I have several .bat files (I know, I&#39;m old) the perform some tasks like running SqlMetal, etc. 

I just want to right-click the file and select &quot;run&quot; or something so the bat is executed. **How do I do it?**

_Note: I know I can use Tools -&gt; External Tools, but it&#39;s not what I&#39;m looking for_


How to run a .bat from inside the IDE

What&#39;s the proper way to put comments into the pre/post build event command line?

Proper way to put comments in build events command line?

My error.log contains:

&gt;Request exceeded the limit of 10 internal redirects due to probable configuration error. Use &#39;LimitInternalRecursion&#39; to increase the limit if necessary. Use &#39;LogLevel debug&#39; to get a backtrace.

I replaced loglevel on apache config file:

`LogLevel debug`

After restarting, I&#39;m getting the same error message without what could be called &quot;a backtrace&quot;. As I understand there should be those 10 lines of redirects generated by mod_rewrite regex.

After searching all over the internet I&#39;ve found plenty of explanations of loglevel and mod_rewrite, but not a word of how to make loglevel debug work.

Any ideas?

How to enable loglevel debug on Apache2 server

I am going to start building project in node.js (was working in PHP before), What is the IDE, Debugger and Helping Tools for node.js, to help improvement while coding ?

IDE and Debugger for node.js

How can I watch the contents of several variables (for example, TreeSet&#39;s) simultaneously? I can watch contents of one TreeSet, clicking on it in &quot;Variables&quot; window, but I have no idea how to do that for several variables.

Watching variables contents in Eclipse IDE

Up until now, I just put a try/catch block around the `Application.Run` in the `Program.cs` entry point to the program. This catches all exceptions well enough in Debug mode, but when I run the program without the debug mode, exceptions don&#39;t get handled anymore. I get the unhandled exception box.

I don&#39;t want this to happen. I want all exceptions to be caught when running in non-debug mode. The program has multiple threads and preferably all exceptions from them get caught by the same handler; I want to log exceptions in the DB. Does anyone have any advice in how to do this?


How can I make something that catches all &#39;unhandled&#39; exceptions in a WinForms application?

How do people debug websites on mobile devices?

I&#39;d like to be able to manipulate the HTML and CSS similar to using the Inspector in a desktop browser, and debug JavaScript.

Content Type	Original Author	Original Content on Stackoverflow
Question	MCA	View Question on Stackoverflow
Solution 1 - Visual Studio	stijn	View Answer on Stackoverflow
Solution 2 - Visual Studio	Vladimir Sinenko	View Answer on Stackoverflow
Solution 3 - Visual Studio	Fred Johnson	View Answer on Stackoverflow
Solution 4 - Visual Studio	ViV	View Answer on Stackoverflow

Run multiple instances with one click in Visual Studio

Visual Studio Problem Overview

Visual Studio Solutions

Solution 1 - Visual Studio

Solution 2 - Visual Studio

Solution 3 - Visual Studio

Solution 4 - Visual Studio

random byte string in python

What's the difference between Web App and Virtual Folder in the context of IIS 7.x?

Attributions