Monthly Archives: January 2010

Error TF30224 – The First Project on TFS 2010 is the hardest

While setting up Microsoft Team Foundation Server 2010 Beta 2 one might into an non obvious issue with user rights. The error observed would look the following:

New Project TFS Error TF30224

The TFS installation considered is a single machine installation with SQL Server Reporting and Analysis services and SharePoint Services installed during the TFS installation.

The full descriptions of the error is:

Error
TF30224: Failed to retrieve projects from the report server. Please check that the SQL Server Reporting Services Web and Windows services are running and you have sufficient privileges for creating a project.

Explanation
The Project Creation Wizard encountered a problem while creating reports on the SQL Server Reporting Services on http://coruscant/ReportServer/ReportService2005.asmx. The reason for the failure cannot be determined at this time. Because the operation failed, the wizard was not able to finish creating the SQL Server Reporting Services site.

User Action
Contact the administrator for the SQL Server Reporting Services on http://coruscant/ReportServer/ReportService2005.asmx to confirm that the SQL Server Reporting Services server is running and you have sufficient privileges to create a project . Your user account on SQL Server Reporting Services must have Content Manager permission to create a new project. Also, you might find additional helpful information in the project creation log. The log shows each action taken by the wizard at the time of the failure and may include additional details about the error.

A wild guess might be checking all rights for SQL Server, SharePoint sites, SQL Server Reporting Services etc. Pat Ramadass comes up with the right hint that origins from the previous TFS version.

First of all do not look for the Reporting Service Configuration Manager. Go straight to http://localhost/Reports/ (logged in on your TFS server machine with administrator rights). You will get the SQL Server Reporting Services site. Select the Properties page and click on New Role Assignment.

SQL Server Repoting Services - Home

Now add exactly the user (or group) you tried creating the TFS Team Project with. Select at least Content Manager and confirm by pressing OK.

SQL Server Reporting Services - New Role Assignment

Go back to you local machine and try to create the TFS Team Project again. The users should now have sufficient rights to create the project.

How to use Google Calendar Sync with Microsoft Outlook on Windows 7

There is an urban legend that Google Calendar Sync would not run on Windows 7. Indeed, if you follow the installation instructions Google Calendar Sync will first ask you for your credentials and consequently fail to connect to Google Calendar. In the following you’ll find an solution how to use Google Calendar Sync with Microsoft Outlook 2007 on a Windows 7 system that that is provided under a works on my machine premise.

Google Calendar Sync 0.9.3.5

Once saved, Google Calendar Sync will try to connect but fail with error 2006. There is not many information about this error beside various frustrated users ranting about this and some statements that the current version of Google Calendar Sync (0.9.3.5) is not supported under Windows 7 yet.

Google Calendar Sync Error 2006

In the current case we will even run Google Calendar Sync on a Windows 7 64-bit system. Before you continue, make sure you exit Google Calendar Sync. First of all open a Explorer window and navigate to C:Program Files (x86)GoogleGoogle Calendar Sync or C:Program FilesGoogleGoogle Calendar Sync on a 32-bit Windows 7 system.

GoogleCalendarSync.exe

Right click on GoogleCalendarSync.exe and select Properties. Now select the Compatibility tab, check the Run this program in compatibility mode for and choose Windows Vista (Service Pack 2) from the drop down list. Click on OK and restart Google Calendar Sync either from your desktop icon or from the start menu entry.

GoogleCalndarSync.exe Properties - Compatibility Tab

Once restarted you can happily sync Google Calendar with Microsoft Outlook 2007 on (even a 64-bit) Windows 7 system.

Google Calendar Sync running on Windows 7

The Compatibility mode of Windows is a great feature to make usage of legacy programs that have not been or will never bee updated to the latest Windows version. Since Windows 7 even mode modes (including Windows Server) back to Windows 95 are supported. The number of supported versions might vary depending on the Windows 7 version you use, however, the Vista and XP mode should always be available.

Extension Method Naming Conventions Best Practices

With .NET Framework 3.5 Extension Methods were introduced to .NET developers. The concept of extension methods allows you to

“[… ] ‘add’ methods to existing types without creating a new derived type, recompiling, or otherwise modifying the original type.”

While the most common use for extension methods are LINQ standard query operators, extension methods provide aplenty of new possibilities. One issue one comes along is the correct naming if extension methods and their corresponding classes.

The signature of a extension method differs slightly from a common signature as the first parameter is preceded by the this modifier:

public static int WordCount(this string that)

I haven’t found much about naming conventions, most about naming the methods itself, how to organize them or what you should not do with them. If you have read through Robert C. Martin’s Clean Code you might know that naming is an essential foundation of clean code. I’ve read through a lot of code outside and inside of Microsoft, however, I haven’t seen anybody following global guidelines. There might be group specific conventions but nothing that seems to be applied by the majority of developers.

1. Name the type parameter that

This seems to be very odd, but naming the type parameter that has quite some charm. When reading the signature you immediately see the type parameter, when reading through the method body you always know that that is the type parameter the extension is written for. When reading through many extension methods I found it very pleasant to read those methods following this convention.

public static int WordCount(this string that)

2. Create dedicated static classes for each type

No matter whether you put the extension methods in a separate library, in a specific sub-folder within your project or somewhere random

a) Do create separate files for each class containing extension methods.
b) Do create separate classes for each set of extension methods for a certain type.

Once you follow these simple rules you can think straight forward about naming of classes containing extension methods. If you collect all extension methods within a single class (or file) you might end ob with a lot of obsolete code while your application evolves. Due to rewriting your code and refactoring your application same extensions might become obsolete or some classes you extend do not exists anymore in your project. Using dedicated files make maintaining your code base much more easy.

Classes for Extension Methods

3. Use the Extension suffix

During our day job we realized that naming the class with the suffix Extension provide good semantics of the class. This indicates clearly that you are dealing with a collection of extensions. For example, while using the using the Visual Studio Object Browser you can easily identify those classes providing extension methods.

public static class StringExtension
{
    public static int CountWords(this string that)
    {
        ...
    }
}

4. Name what is being extended

It seems to be a good practice to name classes after what they extend. If you follow the previous two guidelines this should be a straight forward job. In addition your code is good to read and easy to understand. In practice we came along various conflicts with already existing naming guidelines. Anyway extensions are a relatively new concepts and one would expect that there might be conflicts with already existing naming conventions. The following will illustrate one of those conflicts:

Naming conventions for Extension Methods

By convention interface names should start with a capitalized ‘I’. So odes ICalculator. Following the above guidelines you might consider naming the corresponding class providing extension methods for the interface ICalculator type CalculatorExtension. In this case it seems reasonable to neglect the convention for interfaces:

Consequently, ICalculatorExtension provides extension methods for the ICalculator type, CalculatorExtension provides extension methods for the type Calculator. This approach will not only increase the maintainability of your codebase, I will also allow new team members to orientate quickly in your codebase.

There are various reasons for and against naming conventions for extension methods. Once writing Reactive Extensions for .NET this might get even more complicated as you will write a lot of extension methods for dedicated purposes. However, for common codebases the provided guidelines might help to develop easy to read and maintain, clean code.

Adobe PDF Preview for Windows 64-bit

Microsoft’s Windows 7, Outlook 2007 and Adobe’s Acrobat just do not play well together on 64-bit systems. After receiving a PDF document via email, Outlook usually cannot display the PDF.

Outlook PDF Preview

When selection Preview File, you will simply get the message PDF Preview Handler for Vista (Vista!?) caused an error.

Outlook PDF Preview Handler for Vista

 

For now, the only way to view the PDF file is to open it in an external PDF reader. Leo Davidson provides a fix that finally solves this issue. Just get the fix, and run the Adobe Reader preview handler x64 fixer.exe which is included in the file.

Leo Davidson's Preview Handler Fix

After applying the fix, both, the 32-bit AppID as well as the 64-bit AppID will show the value as correct.

Leo Davidson's Preview Handler Fix

No reboot required, just go back to Outlook (worked even without restarting the application) and et voilà.

Fixed Outlook PDF Preview

Thanks to Leo Davidson, who provides this outstanding fix. Well played.