C# Extension for StarUML

This extension for StarUML supports C# code generation from a UML model. It also allows converting C# code into a UML model. Install this extension from Extension Manager of StarUML.

⚠️ This extension does not provide perfect reverse engineering, which is a test and temporal feature. If you need a complete reverse engineering feature, please check other professional reverse engineering tools.

✅ This extension is based on C# 2.0 specification.

C# Code Generation

1. Click the menu (Tools > C# > Generate Code...)
2. Select a base model (or package) that will be generated to C#.
3. Select a folder where generated C# source files will be placed.

Below are the rules to convert UML model elements to C# source code.

UMLPackage

• converted to C# namespace (as a folder).

UMLClass

• converted to C# Class. (as a separate .cs file)
• visibility to one of modifiers public, protected, private and none.
• isAbstract property to abstract modifier.
• isFinalSpecialization and isLeaf property to sealed modifier.
• Default constructor is generated.
• All contained types (UMLClass, UMLInterface, UMLEnumeration) are generated as inner type definition.
• Documentation property to C#Doc comment.
• Annotation Type is converted to C# attribute class, which extends System.Attribute and postfix of class is Attribute. (cf. class testAttribute:System.Attribute)
• If stereotype = struct then converted to C# Struct.

UMLAttribute

• converted to C# Field.
• visibility property to one of modifiers public, protected, private and none.
• name property to field identifier.
• type property to field type.
• multiplicity property to array type.
• isStatic property to static modifier.
• isLeaf property to sealed modifier.
• defaultValue property to initial value.
• Documentation property to C#Doc comment.

UMLOperation

• converted to C# Methods.
• visibility property to one of modifiers public, protected, private and none.
• name property to method identifier.
• isAbstract property to abstract modifier.
• isStatic property to static modifier.
• UMLParameter to C# Method Parameters.
• UMLParameter's name property to parameter identifier.
• UMLParameter's type property to type of parameter.
• UMLParameter with direction = return to return type of method. When no return parameter, void is used.
• UMLParameter with isReadOnly = true to sealed modifier of parameter.
• Documentation property to C#Doc comment.
• If stereotype = property then converted to C# Property.
• With isReadOnly just the getter is generated.

UMLInterface

• converted to C# Interface. (as a separate .cs file)
• visibility property to one of modifiers public, protected, private and none.
• Documentation property to C#Doc comment.

UMLEnumeration

• converted to C# enum. (as a separate .cs file)
• visibility property to one of modifiers public, protected, private and none.
• UMLEnumerationLiteral to literals of enum.

UMLAssociationEnd

• converted to C# Field.
• visibility property to one of modifiers public, protected, private and none.
• name property to field identifier.
• type property to field type.
• If multiplicity is one of 0..*, 1..*, *, then collection type (List<> when isOrdered = true or HashSet<>) is used.
• defaultValue property to initial value.

UMLGeneralization

• converted to C# Extends (:).
• Allowed only for UMLClass to UMLClass, and UMLInterface to UMLInterface.

UMLInterfaceRealization

• converted to C# Implements (:).
• Allowed only for UMLClass to UMLInterface.

C# Reverse Engineering

1. Click the menu (Tools > C# > Reverse Code...)
2. Select a folder containing C# source files to be converted to UML model elements.
3. CsharpReverse model will be created in the Project.

Below are the rules to convert from C# source code to UML model elements.

C# Namespace

• converted to UMLPackage.

C# Class

• converted to UMLClass.
• Class name to name property.
• Type parameters to UMLTemplateParameter.
• Access modifier public, protected and private to visibility property.
• abstract modifier to isAbstract property.
• sealed modifier to isLeaf property.
• Constructors to UMLOperation with stereotype <<constructor>>.
• All contained types (UMLClass, UMLInterface, UMLEnumeration) are generated as inner type definition.

C# Field (to UMLAttribute)

• converted to UMLAttribute if "Use Association" is off in Preferences.

• Field type to type property.

  • Primitive Types : type property has the primitive type name as string.
  • T[](array) or its descendants: type property refers to T with multiplicity *.
  • T (User-Defined Types) : type property refers to the T type.
  • Otherwise : type property has the type name as string.

• Access modifier public, protected and private to visibility property.

• static modifier to isStatic property.

• sealed modifier to isLeaf and isReadOnly property.

• Initial value to defaultValue property.

C# Field (to UMLAssociation)

• converted to (Directed) UMLAssociation if "Use Association" is on in Preferences and there is a UML type element (UMLClass, UMLInterface, or UMLEnumeration) that corresponds to the field type.

• Field type to end2.reference property.

  • T[](array) or its descendants: reference property refers to T with multiplicity *.
  • T (User-Defined Types) : reference property refers to the T type.
  • Otherwise : converted to UMLAttribute, not UMLAssociation.

• Access modifier public, protected and private to visibility property.

C# Method

• converted to UMLOperation.
• Type parameters to UMLTemplateParameter.
• Access modifier public, protected and private to visibility property.
• static modifier to isStatic property.
• abstract modifier to isAbstract property.
• sealed modifier to isLeaf property.

C# Interface

• converted to UMLInterface.
• Class name to name property.
• Type parameters to UMLTemplateParameter.
• Access modifier public, protected and private to visibility property.

C# Enum

• converted to UMLEnumeration.
• Enum name to name property.
• Type parameters to UMLTemplateParameter.
• Access modifier public, protected and private to visibility property.
• Enum constants are converted to UMLEnumerationLiteral.

C# AnnotationType

• converted to UMLClass with stereotype <<annotationType>>.
• Annotation type elements to UMLOperation. (Default value to a Tag with name="default").

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Licensed under the MIT license (see LICENSE file).