ModelService Class

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This class is the main entry point that the designer uses to interact with the model.

Namespace:  System.Activities.Design.Services
Assembly:  System.Activities.Design.Base (in System.Activities.Design.Base.dll)


Public MustInherit Class ModelService
Dim instance As ModelService
public abstract class ModelService
public ref class ModelService abstract
public abstract class ModelService
type ModelService =  class end


The service has a split between public and protected methods that you must implement when you create a derived class. The public methods are callable by anyone. The protected methods are invoked by the model.

Inheritance Hierarchy


Thread Safety

Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.


Windows 7, Windows Vista, Windows XP SP2, Windows Server 2008, Windows Server 2003

The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

Version Information

.NET Framework

Supported in: 4

See Also


ModelService Members

System.Activities.Design.Services Namespace