[Visual Basic .NET]
The following VB.NET code shows how to get a reference to a server object extension to the MapServer called "AreaSumExtension". This extension supports an interface called IAreaSum. The code assumes a valid ServerObjectManager (pSOM):
Dim pServerContext As IServerContext = pSOM.CreateServerContext("RedlandsMap", "MapServer")
  
Dim pMapServer As IMapServer = pServerContext.ServerObject
Dim pSOExtManager As IServerObjectExtManager = pMapServer
Dim pSOExt As IServerObjectExtension = pSOExtManager.FindExtensionByName(“AreaSumExtension”);
Dim pAreaSum As IAreaSum = pSOExt
       'call methods on IAreaSum
pServerContext.ReleaseContext()

[Visual Basic 6.0, C#, C++]
No example is available for Visual Basic 6.0, C#, or C++. To view a Visual Basic .NET example, click the Language Filter button in the upper-left corner of the page.