There is no 4.5 application pool. You can use any 4.5 application in 4.0 app pool. The .NET 4.5 is &quot;just&quot; an in-place-update not a major new version.

Go to &quot;Run&quot; and execute this:

    %windir%\Microsoft.NET\Framework\v4.0.30319\aspnet_regiis.exe -ir

NOTE: run as administrator.

There is no v4.5 shown in the gui, and typically you don&#39;t need to manually specify v4.5 since it&#39;s an in-place update. However, you can set it explicitly with appcmd like this: 

    appcmd set apppool /apppool.name: [App Pool Name] /managedRuntimeVersion:v4.5

Appcmd is located in `%windir%\System32\inetsrv`. This helped me to fix an issue with Web Deploy, where it was throwing an ERROR_APPPOOL_VERSION_MISMATCH error after upgrading from v4.0 to v4.5.

[MS article on setting .Net version for App Pool][1]


  [1]: http://technet.microsoft.com/en-us/library/cc754523%28v=ws.10%29.aspx

I&#39;m new to Ruby and don&#39;t know how to add new item to already existing hash. For example, first I construct hash:

    hash = {item1: 1}

after that a want to add item2 so after this I have hash like this:

    {item1: 1, item2: 2}

I don&#39;t know what method to do on hash, could someone help me?

How to add new item to hash

Is there a way to check if a table exists *without* selecting and checking values from it?

That is, I know I can go `SELECT testcol FROM testtable` and check the count of fields returned, but it seems there must be a more direct / elegant way to do it.

Check if MySQL table exists without using &quot;select from&quot; syntax?

I installed the Visual Studio 11 Beta and suddenly all the async action methods I had created under the VS 11 Developer preview started hanging (apparently this issue: http://blogs.msdn.com/b/pfxteam/archive/2012/03/03/10277166.aspx).

My app is using v4.0.30319 as the Framework Version, but there is no option to use 4.5. I repaired my .net 4.5 install to be sure, but nothing. Is there a way to configure this in IIS? Do I need to bin deploy the files (and if so which)? 

How to set .net Framework 4.5 version in IIS 7 application pool

<p>I installed the Visual Studio 11 Beta and suddenly all the async action methods I had created under the VS 11 Developer preview started hanging (apparently this issue: <a href="http://blogs.msdn.com/b/pfxteam/archive/2012/03/03/10277166.aspx" target="_blank" rel="noopener noreferrer">http://blogs.msdn.com/b/pfxteam/archive/2012/03/03/10277166.aspx</a>).</p>
<p>My app is using v4.0.30319 as the Framework Version, but there is no option to use 4.5. I repaired my .net 4.5 install to be sure, but nothing. Is there a way to configure this in IIS? Do I need to bin deploy the files (and if so which)?</p>


I am getting the following exception. I have given full control to Asp.net account on Eventlogs in Registry edit.

&gt; [SecurityException: The source was not found, but some or all event
&gt; logs could not be searched.  Inaccessible logs: Security.]
&gt;
&gt;     System.Diagnostics.EventLog.FindSourceRegistration(String source,  String machineName, Boolean readOnly, Boolean wantToCreate) +664
&gt;     System.Diagnostics.EventLog.SourceExists(String source, String machineName, Boolean wantToCreate) +109
&gt;     System.Diagnostics.EventLog.SourceExists(String source) +14 Microsoft.ApplicationBlocks.ExceptionManagement.DefaultPublisher.VerifyValidSource() +41

I guess this is due to some configuration issue on server?

The source was not found, but some or all event logs could not be searched

Is it possible to show row number in the row header of a `DataGridView`?        

I&#39;m trying with this code, but it doesn&#39;t work:

        
        private void setRowNumber(DataGridView dgv)
        {
            foreach (DataGridViewRow row in dgv.Rows)
            {
                row.HeaderCell.Value = row.Index + 1;
            }
        }
Do I have to set some `DataGridView` property?

Show row number in row header of a DataGridView

I have been working in a .NET Framework 4 project using server tags like &lt;%=whatever %&gt; to set the visibility of runat=&quot;server&quot; controls, like the following:

      &lt;div id=&quot;MyId&quot; runat=&quot;server&quot; visible=&quot;&lt;%=MyVisiblePropertyOnCodeBehind %&gt;&quot; &gt;
        Content
      &lt;/div&gt;

This works on framework 4, but now trying to use this on a Framework 3.5 project it doesn&#39;t seems to work. Is this a Framework 4 only feature? Is there a coolest (and .aspx side) alternative to setting the visibility from codebehind? I&#39;m using the ugly:

        MiId.Visible = MyVisiblePropertyOnCodeBehind

Thanks in advance,

Tom


**[EDITED] SOLUTION:**

Thanks for your comments that makes me understand my problem and the solution!

It was my fault in more than one thing. 

In the VS2010 project we were using &lt;%# instead of &lt;%=  

Also, I didn’t notice that in the VS2010 project we were using pages inherited not from “Page”, but from a CustomPage class, that was making the binding automatically, without me noticing it, and that makes me think that was a Framework 4.0 only feature.

As you told here, if you have the following markup:

      &lt;div id=&quot;MyId&quot; runat=&quot;server&quot; visible=&quot;&lt;%# MyVisiblePropertyOnCodeBehind %&gt;&quot; &gt;
        Content
      &lt;/div&gt;

you can make it work, adding the following to the codebehind:

        public bool  MyVisiblePropertyOnCodeBehind = true;
        protected void Page_Load(object sender, EventArgs e) {
            DataBind();
            // Or if you want only for one control, MyId.DataBind();             
        }


As I read, this DataBind() can reduce performance of the application. Do you have idea of how much? Could this be understood as a “professional” technique to be used on big projects, or do you think it should be avoided?

I love the way it makes markup  readable and  easy to understand in a single view, but I wouldn’t like to be guilty of slow code because that.

Set Visible property with server tag &lt;%= %&gt; in Framework 3.5

Let&#39;s say there are 

    List&lt;string&gt; a1 = new List&lt;string&gt;();
    
    List&lt;string&gt; a2 = new List&lt;string&gt;();

 
Is there way to do like this?

    if (a1 == a2) 
    {
    
    }

How to compare two List&lt;String&gt; to each other?

This is the code I have so far:

        public class Class1
        {
            private const string URL = &quot;https://sub.domain.com/objects.json?api_key=123&quot;;
            private const string DATA = @&quot;{&quot;&quot;object&quot;&quot;:{&quot;&quot;name&quot;&quot;:&quot;&quot;Name&quot;&quot;}}&quot;;

            static void Main(string[] args)
            {
                Class1.CreateObject();
            }

            private static void CreateObject()
            {
                HttpWebRequest request = (HttpWebRequest)WebRequest.Create(URL);
                request.Method = &quot;POST&quot;;
                request.ContentType = &quot;application/json&quot;;
                request.ContentLength = DATA.Length;
                StreamWriter requestWriter = new StreamWriter(request.GetRequestStream(), System.Text.Encoding.ASCII);
                requestWriter.Write(DATA);
                requestWriter.Close();

                 try {
                    WebResponse webResponse = request.GetResponse();
                    Stream webStream = webResponse.GetResponseStream();
                    StreamReader responseReader = new StreamReader(webStream);
                    string response = responseReader.ReadToEnd();
                    Console.Out.WriteLine(response);
                    responseReader.Close();
                } catch (Exception e) {
                    Console.Out.WriteLine(&quot;-----------------&quot;);
                    Console.Out.WriteLine(e.Message);
                }

            }
        }
    

The problem is that I think the exception block is being triggered (because when I remove the try-catch, I get a server error (500) message.  But I don&#39;t see the Console.Out lines I put in the catch block.

My Console:

```none
The thread &#39;vshost.NotifyLoad&#39; (0x1a20) has exited with code 0 (0x0).
The thread &#39;&lt;No Name&gt;&#39; (0x1988) has exited with code 0 (0x0).
The thread &#39;vshost.LoadReference&#39; (0x1710) has exited with code 0 (0x0).
&#39;ConsoleApplication1.vshost.exe&#39; (Managed (v4.0.30319)): Loaded &#39;c:\users\l. preston sego iii\documents\visual studio 11\Projects\ConsoleApplication1\ConsoleApplication1\bin\Debug\ConsoleApplication1.exe&#39;, Symbols loaded.
&#39;ConsoleApplication1.vshost.exe&#39; (Managed (v4.0.30319)): Loaded &#39;C:\Windows\Microsoft.Net\assembly\GAC_MSIL\System.Configuration\v4.0_4.0.0.0__b03f5f7f11d50a3a\System.Configuration.dll&#39;, Skipped loading symbols. Module is optimized and the debugger option &#39;Just My Code&#39; is enabled.
A first chance exception of type &#39;System.Net.WebException&#39; occurred in System.dll
The thread &#39;vshost.RunParkingWindow&#39; (0x184c) has exited with code 0 (0x0).
The thread &#39;&lt;No Name&gt;&#39; (0x1810) has exited with code 0 (0x0).
The program &#39;[2780] ConsoleApplication1.vshost.exe: Program Trace&#39; has exited with code 0 (0x0).
The program &#39;[2780] ConsoleApplication1.vshost.exe: Managed (v4.0.30319)&#39; has exited with code 0 (0x0).
```






How do I make calls to a REST API using C#?

I have tried making (my first) a C# program:

    using System;
    using System.Collections.Generic;
    using System.Linq;
    using System.Text;

    namespace ConsoleApplication1
    {
        class Program
        {
            static void Main(string[] args)
            {
                Console.WriteLine(&quot;hello&quot;);
                Console.ReadLine();
            }
        }
    }

This goes well, but if I try using System.Windows.Forms:

    using System;
    using System.Collections.Generic;
    using System.Linq;
    using System.Text;
    using System.Windows.Forms;

    namespace ConsoleApplication1
    {
        class Program
        {
            static void Main(string[] args)
            {
                Console.WriteLine(&quot;hello&quot;);
                System.MessageBox(&quot;hello&quot;);
                Console.ReadLine();
            }
        }
    }

This is the error I get:

    Error	1	The type or namespace name &#39;Windows&#39; does not exist in the namespace     &#39;System&#39; (are you missing an assembly reference?)	C:\Users\Ramy\Documents\Visual Studio 2010\Projects\ConsoleApplication1\ConsoleApplication1\Program.cs	5	14	ConsoleApplication1

Some details:
- I am using Visual Studio 2012;
- I have installed the .NET Development Kit;
- It is a Console Application.

Maybe it&#39;s because on a Console Application can&#39;t use System.Windows.Forms?
If so, what program should be? I also have tried with a form, but I was only displaying a window and no code.

Can&#39;t use System.Windows.Forms

I recently discovered that even while logged into my personal laptop as an administrator, Visual Studio does not run in administrator mode and you need to explicitly use *Run As Administrator*.

Is there a way to make it run as an administrator by default, other than creating a shortcut, etc.?


How do I run Visual Studio as an administrator by default?

I know that [I can set up Visual Studio to debug through the .NET framework source code][1].

But is there a way that I can browse the code while NOT debugging - i.e., being able to press F12 or &quot;Go to definition&quot;?

I thought that if that feature isn&#39;t built into Visual Studio then there may be a plug-in that might add it?

  [1]: https://web.archive.org/web/20150822081658/http://blogs.msdn.com:80/b/sburke/archive/2008/01/16/configuring-visual-studio-to-debug-net-framework-source-code.aspx

Browsing the .NET Framework source code from Visual Studio

I know one should not use global variables but I have a need for them. I have read that any variable declared outside a function is a global variable. I have done so, but in another `*.cpp` file, that variable could not be found. So it was not really global. Isn&#39;t it so that one has to create a header file `GlobalVariabels.h` and include that file to any other `*cpp` file that uses it?


How to declare a global variable in C++

I am running visual studio C++  and I have a header file &quot;GameEngine.h&quot; that I am trying to have another file see.  

When I #include &quot;GameEngine.h&quot;  it gives me the error that it cannot open the source file.  I have no idea what to do.  I have done this literally a thousand times but for some reason this is now not working.  

ERROR: Cannot open source file &quot; &quot;

I am trying to use WAMP on Windows 7, my WAMP is online, but when I open localhost I get the welcome page of IIS 7.5, although I have uninstalled IIS 7.5 from my PC!

Apache server test says that port 80 is used my Microsoft-HTTPAPI/2.0

MS Visual Studio 2010 was uninstalled a short while ago as well.

Can&#39;t use WAMP , port 80 is used by IIS 7.5

There are multiple web sites and multiple folders under inetpub\logs\LogFiles (W3SVC1, W3SVC2, etc). How can I find what folder is used by a given web site?

How to find corresponding log files folder for a web site?

I&#39;ve encountered an error deploying a site to a server.  When trying to load the home page, or access authentication on the new site in IIS, I get the error:

&gt; Config Error: This configuration section cannot be used at this path.
&gt; This happens when the section is locked at a parent level. Locking is
&gt; either by default (overrideModeDefault=&quot;Deny&quot;), or set explicitly by a
&gt; location tag with overrideMode=&quot;Deny&quot; or the legacy
&gt; allowOverride=&quot;false&quot;.

More detail can be found here, in [Scenario 7](https://docs.microsoft.com/en-gb/archive/blogs/webtopics/troubleshooting-http-500-19-errors-in-iis-7) matches my hex error code.

The solution given on the linked site above is to set **Allow** for overrideModeDefault in the section mentioned in my error, in the _applicationHost.config_ file.  In my case, &lt;section name=&quot;anonymousAuthentication&quot;&gt; under **Security** in _system.webServer_.  But if I look at the _applicationHost.config_ on my local computer, where the site is properly deployed already, that section is set to **Deny**.

If this solution is correct, how is my local instance running just fine with the same *web.config*?  According to my *applicationHost.config*, that section should be locked, but it&#39;s not.  I&#39;d prefer to not change the *applicationHost.config* file, because there are many other sites running on that server.  Is there another solution?

Config Error: This configuration section cannot be used at this path

I have searched around Google and StackOverflow trying to find a solution to this, but they all seem to relate to ASP.NET etc.

I usually run Linux on my servers but for this one client I am using Windows with IIS 7.5 (and Plesk 10). This being the reason why I am **slightly unfamiliar with IIS and web.config** files. In an `.htaccess` file you can use rewrite conditions to detect whether the protocol is HTTPS and redirect accordingly. Is there a **simple way** to achieve this using a web.config file, or even using the &#39;**URL Rewrite**&#39; module that I have installed?

I have **no experience with ASP.NET** so if this is involved in the solution then please include clear steps of how to implement.

The reason for me doing this with the web.config and **not** PHP is that I would like to force HTTPS on all assets within the site.


How to force HTTPS using a web.config file

I wrote REST service using ASP.NET Web API.
I&#39;m trying to send HttpDelete request, however I get the following error:

&gt; 405 - HTTP verb used to access this page is not allowed

I think I&#39;m close to the solution, I found out that I should enable IIS remote management , go to Handler Mappings section and add DELETE verb to the appropriate position...
but the problem is that there is a lots of different positions on the list...
(sth like here: http://www.somacon.com/p126.php).

Which one should I edit? 
Few of them don&#39;t have extension, e.g. &quot;ExtensionUrlHandler-Integrated-4.0&quot; and I added DELETE verb to it, but it still doesn&#39;t work...

It was just a shot in the dark to modify that one, so should I modify different position? If so, which one? Or maybe is there anything more what I should do?

The same web service work perfectly fine on my local service, so I guess the problem is with the remote IIS...

Greetings

Content Type	Original Author	Original Content on Stackoverflow
Question	Gene Reddick	View Question on Stackoverflow
Solution 1 - .Net	Peter Kiss	View Answer on Stackoverflow
Solution 2 - .Net	Vitor Sousa	View Answer on Stackoverflow
Solution 3 - .Net	Walter	View Answer on Stackoverflow

How to set .net Framework 4.5 version in IIS 7 application pool

.Net Problem Overview

.Net Solutions

Solution 1 - .Net

Solution 2 - .Net

Solution 3 - .Net

Check if MySQL table exists without using "select from" syntax?

How to add new item to hash

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