1. Excel Object Model

2. Object Oriented Programming
Property
Method
Event
read
write
Each object in a Microsoft application has properties which you can view and/or change, methods which you can utilise within a procedure and associated events to which you can attach a sub-routine.
Collection
Object
object

3. Object Oriented Programming
read/write
Property
Method
execute
procedure
A sub-routine can :-
- exchange values with any of an object’s properties
- instruct an object to carry out any of its methods
- provide code to run when any of an object’s events occur
Event
triggers

4. Workbook Object Workbook (object) Worksheets (property) Workbook_Open
(event)
Close
(method)
You identify a collection of worksheets by using the enclosing workbook’s Worksheets property.
Name
(property)
ActiveSheet
(property)
Collection
Worksheet
Worksheet
Worksheet

5. Object Browser Window LIBRARY PROPERTIES METHODS EVENTS OBJECT CLASS
Use the view menu to locate the Object Browser Window and ensure that you have the appropriate libraries selected before searching for the object of interest.

6. Sub Current_Workbook() Dim wb As Workbook
Simple Sub-Routine
Sub Current_Workbook()
Dim wb As Workbook
Set wb = Application.ActiveWorkbook
Debug.Print wb.Name
Set wb = Application.Workbooks(1)
wb.Save
End Sub
OBJECT
PROPERTY
METHOD
COLLECTION
The sub-routine uses the variable wb to manipulate the active workbook.

7. References To Object Libraries
Visual Basic For Applications
Microsoft Excel Object Library
OLE Automation
Microsoft Office Object Library
Another Workbook

8. Simple Object Hierarchy
If in doubt about where the object you need lies in the hierarchy, start with the Application object and work down.

9. Create An Object
Add Method
new object
collection

10. The object model is not perfectly consistent.
Always Remember …
The distinction between a property and a method is not always clear-cut.
The object model is not perfectly consistent.
The sub-routine uses the variable wb to manipulate the active workbook.