Sequence diagrams in UModel can be generated programmatically from an IUMLOperation element. The operation needs to exist in the model and have some source code associated to it.
The operation could possibly have been previously "read" by the reverse engineering functionality of UModel. Creating new Sequence Diagrams programmatically by reverse engineering source code using the UModel API involves two short steps:
•Setting up the options for diagram generation
•Invoking the diagram generation function
The following C# code shows how to set up the options and start the generation of the sequence diagram:
// starts the sequence diagram generation process based on an operation given as parameter