Simple C# Even or Odd Function for SQLCLR

One day, I mentioned about writing C# program and run it in SQL Server 2008. My colleagues reaction was like “HOW?!!”

Let me demo a simple SQLCLR Function to determine the number pass in is even or odd.

1.       Start Visual Studio 2010.

2.       Select File -> New -> Project…

3.       Expand the Database Projects by clicking on the triangle.




4.       Choose C# SQL Server Project, type the project name as SQLServerOMS. You can always type in another name.

5.       Choose my existing chanmm-pcw7sqlexpress.OMS.dbo as reference and click ok. If you do not have an existing connection then click Add New Reference… button to add one.


6.       Right click the project in Solution Explorer choose Add -> User-Defined Function




7.       Leave the name as default Function1.cs then click Add.




8.       Add the below code to Fucntion1.cs.


  public static SqlInt16 FuncOddEven(SqlInt16 intVal)


    return (intVal % 2);



9.       Choose Build -> Deploy Solution

10.   Start SQL Server Management Studio you can now see the functions.

11.   Type SELECT dbo.FuncOddEven(3);

You might get the error message as below:

Msg 6263, Level 16, State 1, Line 1

Execution of user code in the .NET Framework is disabled. Enable "clr enabled" configuration option.

12.   To fix this type the following then repeat step 11.

sp_configure ‘show advanced options’, 1



sp_configure ‘clr enabled’, 1





Download the complete code from The sample file name is “SqlServerOMS.rar”. My MSN ID is

About chanmingman

Since March 2011 Microsoft Live Spaces migrated to Wordpress ( till now, I have is over 1 million viewers. This blog is about more than 50% telling you how to resolve error messages, especial for Microsoft products. The blog also has a lot of guidance teaching you how to get stated certain Microsoft technologies. The blog also uses as a help to keep my memory. The blog is never meant to give people consulting services or silver bullet solutions. It is a contribution to the community. Thanks for your support over the years. Ming Man is Microsoft MVP since year 2006. He is a software development manager for a multinational company. With 25 years of experience in the IT field, he has developed system using Clipper, COBOL, VB5, VB6, VB.NET, Java and C #. He has been using Visual Studio (.NET) since the Beta back in year 2000. He and the team have developed many projects using .NET platform such as SCM, and HR based applications. He is familiar with the N-Tier design of business application and is also an expert with database experience in MS SQL, Oracle and AS 400.
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