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Showing posts from March, 2014

Clean up AppFabric Dashboard Part 2: Duplicate collection entry in Web.config

In Part one I have already described how to remove phantom apps here on more supplement. These phantom apps could also remain in the AppFabric Monitoring db:


Just delete no longer needed entries in this table.
Duplicate collection entry When you receive this kind of issue, like "[...] Cannot add duplicate collection entry [...]" you have defined the a configuration section twice in two different Web.config files in different places in your file system.

Clear One easy solution is to use a clear statement. Searching for the inherited element There is a post in Microsoft's documentation which is explaining how to do it. Visual Studio in debug mode When you are working with Visual Studio in debug mode, which means you are just pressing F5 to run it on your local IIS instead of publishing it to a web server, you should keep in mind that e.g. your obj folder might contain more copies of your Web.config file. This could lead into this duplicate collection issue as well.

Cleanup AppFabric Dashboard Part 1: Old virtual paths and phantom applications on IIS

While you are working with IIS installing and uninstalling web applications you might run into this issue on AppFabric Dashboard:


Another example is this error message:


There are two steps necessary to get a cleaned AppFabric Dashboard.
Delete old virtual paths Old virtual paths might remain in %windir%\system32\inetsrv\config\ApplicationHost.config. To get rid of these crappy virtual paths switch to command line tool and use the following script:

C:\Windows\System32\inetsrv>appcmd.exe list vdir

VDIR "Default Web Site/" (physicalPath:%SystemDrive%\inetpub\wwwroot)
VDIR "Default Web Site/Service/App1/" (physicalPath:C:\Service\App1)
VDIR "Default Web Site/Service/App2" (physicalPath:C:\Service\App2)
VDIR "Team Foundation Server/" (physicalPath:C:\Program Files\Microsoft Team Foundation Server 12.0\Tools\Templates)
VDIR "Team Foundation Server/tfs/" (physicalPath:C:\Program Files\Microsoft Team Foundation Server 12.0\Application T…

Two annoying issues in Visual Studio regarding XSDs and WCF should be fixed immediately

In my daily work I am always stumbling on two annoying features in Visual Studio, and I think it could be improved easily. Here is what I am complaining about.
WCF Test Client WCF Test Client might be a nice tiny tool for small WCF tests, especially when you are testing smaller scenarios or when you are starting to learn how to implement web services with .NET. But it can be very annoying when you are working on more advanced stuff and your are testing with your local IIS. WCF Test Client always(!) starts automatically when you press F5 for debugging and your opened .svc.cs file has the focus:

When I have configured local IIS is the target for debugging, then I expect my application will start with local IIS and not with WCF Test Client. Always.
Here is my first urgent request: Please give me an option to disable WCF Test Client completely! Update 03.03.2014: Workaround for WCF Test Client Issue Select project file -> Right click -> Properties -> Web -> Select Don’t open a…

.NET Programming: Jumpstart ETW (Event Tracking for Windows)

To get started with ETW I highly recommend this pluralsight course by Kathleen Dollard. It gives you a really good introduction, including background and some examples. It will be much harder to succeed just by googling or reading books.

I will not spoil anything from this course. Here I will just give a few more hints and annotations to show where I struggled with ETW, to help you not doing the same mistakes. After finishing the pluralsight course I was really eager to get going with my own implementation but I ran into some annoying trapped doors.
Nuget package for EventSourceThe current nuget package for EventSource (Vers. 1.0.16) will create the manifest file automatically (it validates your implementation upfront, only when validation succeeds manifest file will be created. Otherwise there will be no updated or no new manifest file in your bin folder!). Therefore there is no need to create it by hand.
wevtutil.exe Running wevtutil.exe without parameters to see its help, produces …