Readme file update for C# reverse engineering.

README.md

@@ -85,3 +85,90 @@ Belows are the rules to convert from UML model elements to Java source codes.
 
 * 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.
+
+Belows 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 decendants: `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_) correspond to the field type.
+* Field type to `end2.reference` property.
+
+    * `T[]`(array) or its decendants: `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"`). 
+
+
+---
+
+Licensed under the MIT license (see LICENSE file).