A C# enum is modeled through a Modeler Type Definition.
To model a C# enum in a model:
1. In the model, right-click the Model, Package, Class or Signal that is to own the enum, point to New, point to Class Model, point to Type Definition, and then click Enumeration.
2. Type the name of the enum.
3. Open the Type Definition's Property Pages, and set the standard properties of the Type Definition as required.
4. If you want to specify C# specific information, that is, an enum base type, attributes and the internal modifier:
a. Apply the «C# Enum» stereotype to the Type Definition.
5. Create the enum's members through child Enumeration Literals of the Type Definition. For more information about modeling enum members, click here
Modeling a Csharp enum member in a studio model