Microsoft BizTalk ESB Toolkit includes a set of helper classes used by the other processes, services, and components in the toolkit. Because these helper classes are also public, you can use them in your own code as required. For example in a BizTalk Orchestration you can use the MapHelper class to perform transformations directly.
The TransformMessage method takes as parameters a string that contains the message to transform and a string that contains the fully qualified name of a map deployed in BizTalk. The method returns a string containing the transformed document.
The Transformation Web service from the ESB Toolkit enables external applications to submit a document to an ESB application and have it transformed using a deployed Microsoft BizTalk map. But is it also possible to call directly the MapHelper class from you own code? In order to test it I created an small Windows Form application that calls the MapHelper class and after some tweaking it worked!
The sample tool makes it very easy to execute a BizTalk map. It requires a XML file as input, the name of the assembly and the map name.
First enter the Source file and the fully qualified name of the map and click on Test Map
The output is stored in a file and shown on the Result tab.
How the sample works
In the sample .NET application is a reference added to the ESB.TransformServices.dll assembly, which contains the classes required to call a BizTalk map. This is located in C:\Program Files\Microsoft BizTalk ESB Toolkit 2.1\Web\ESB.TransformServices\bin\.
Download
You can download the sample tool with the source code here:
http://code.msdn.microsoft.com/Execute-a-BizTalk-map-from-26166441