Creating a Metaverse Rules Extension in Visual Basic .NET

You can use the Visual Basic .NET programming language to create a metaverse rules extension. There are two ways to create the project files for rules extensions:

• Use Identity Manager to create a Visual Studio .NET 2003 project.
• Use Visual Studio .NET 2003 to create the project

If you want to create your rules extension on a different system, you can use Visual Studio .NET 2003 to create the project files. You will need to copy the Microsoft.MetadirectoryServices assembly to your development system and manually create a reference to the assembly. You can find the assembly in the bin\assemblies folder of the Microsoft Identity Integration Server program folder. The default folder for Microsoft Identity Integration Server is C:\Program Files\Microsoft Identity Integration Server\bin\assemblies\.

To create the rules extension using Visual Studio .NET 2003, you must complete the following steps in the order in which they appear. An overview of the procedure is presented first, followed by a detailed explanation of each step.

1. Create a new Visual Basic class library project
2. Add a reference to the Microsoft.MetadirectoryServices assembly
3. Copy the code to the code pane and make changes to the code
4. Build the class library
5. Install the rules extension in the rules extensions folder (Optional)

To create a new Visual Basic .NET class library project

1. Click Start, point to All Programs, and then click Visual Studio .NET 2003.

   The Microsoft Visual Studio .NET 2003 development environment appears.

2. On the File menu, point to New, and then click Project.
3. In the New Project dialog box, in Project Types, click Visual Basic Projects.
4. On the Template menu, click Class Library.
5. In the Name box, type the name of your rules extension, and then click Browse.
6. Browse to the location where you want to store the project files, click Open, and then click OK.

   Your project name now appears in Solution Explorer.

Note  We recommend that you store the project on your local computer rather than on a network location.

To add a reference to the Microsoft.MetadirectoryServices assembly

1. On the Project menu in Visual Studio .NET, click Add Reference.
2. In the .NET tab of the Add Reference dialog box, click Microsoft.MetadirectoryServices, and then click Select. If the file does not appear in the Selected Components list, click Browse. In the Selected Components dialog box, go to the folder with the assembly file, click Microsoft.MetadirectoryServices.dll, and then click Open.
3. Click OK to close the Add Reference dialog box.

   In Solution Explorer, Microsoft.MetadirectoryServices now appears as one of the references.

To copy the code to the code pane and make changes to the code

1. Delete the existing code in the code pane, and then copy the following code example to the code pane.

   Imports Microsoft.MetadirectoryServices
   
   ' Replace <sample extension object name> with the name of your rules extension
   ' class. If you do not replace <sample extension object name> with the name of 
   ' your rules extension class, you will not be able to compile this file.
   
   Public Class <sample extension object name>
   	Implements IMVSynchronization
   
   	Public Sub Initialize() Implements IMvSynchronization.Initialize
   		' TODO: Add initialization code here
   	End Sub
   
   	Public Sub Terminate() Implements IMvSynchronization.Terminate
   		' TODO: Add termination code here
   	End Sub
   
   	Public Sub Provision(ByVal mventry As MVEntry) _
   						Implements IMVSynchronization.Provision
   		' TODO: Remove this throw statement if you implement this method
   		Throw New EntryPointNotImplementedException()
   	End Sub
   
   	Public Function ShouldDeleteFromMV(ByVal csentry As CSEntry, _
   									 ByVal mventry As MVEntry) _
   									 As Boolean Implements IMVSynchronization.ShouldDeleteFromMV
   		' TODO: Add MV deletion code here
   		Throw New EntryPointNotImplementedException()
   	End Function
   End Class
   

2. In the code, replace all instances of <sample extension object name> with the name of your rules extension class. Be sure to remove the angle brackets (< >).

To build the class library

This procedure is optional. You can set Visual Studio .NET 2003 to automatically install the rules extension in the rules extensions folder as part of the build process.

To install the rules extension in the rules extensions folder

1. In Solution Explorer, click your class library project.
2. On the View menu, click Property Pages.

   There are two folders in the Property Pages dialog box: Common Properties and Configuration Properties.

3. Open the Configuration Properties folder. In the Configuration drop-down list, click All Configurations.
4. In the left pane of the Property Pages dialog box, click Build.
5. In Output Path, type the name of the rules extensions folder or browse to the location of the rules extensions folder.

   The default folder for rules extensions is C:\Program Files\Microsoft Identity Integration Server\Extensions.

6. Click OK to close the Property Pages dialog box.