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Introduction to Computer Programming in Visual Basic for Applications (VBA) 
A SunCam online continuing education course 
www.SunCam.com
Copyright
2012 Kwabena Ofosu, Ph.D., P.E., PTOE
Page 81 of 91 
91 
Press Exit. 
Click OK to dismiss the message box. 
The application closes. 
The test has been an overwhelming success. 
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Introduction to Computer Programming in Visual Basic for Applications (VBA) 
A SunCam online continuing education course 
www.SunCam.com
Copyright
2012 Kwabena Ofosu, Ph.D., P.E., PTOE
Page 82 of 91 
91 
3. OBJECTS  
3.1 Object-Oriented Programming 
In VBA, developing programs consists primarily of manipulating objects by manipulating their 
properties and their methods. An object is a “thing” for example a form, a text box, a combo box 
etc. A property is something that describes some attribute of the object, for example color, size, 
font, etc. A method is some action associated with the object, for example to click on it, to clear 
its contents, to resize it, to double click on it etc.  
Methods are set up by writing procedures for the relevant actions (events). The properties of an 
object may be manipulated in design time through the Properties Window by adjusting the values 
of the relevant properties. In run time (and break time), the object’s properties can be 
manipulated programmatically as part of some procedure. The code for such manipulations is 
generally of the form 
Objectname.Property = newpropertyvalue 
For example, changing the background color of a text box 
UserForm1,TextBox5.BackColor = vbBlue 
or inserting some text into a cell on a spreadsheet, hence changing the cells Value property.  
Sheets(“Sheet1”).cells(1,3).Value = “SALARY” 
Methods, similarly, have a general form 
Objectname.Methodname 
For example, clear the contents of text box on a form. 
UserForm2.TextBox1.ClearContents 
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How to C#: Preview Document Content Using XDoc.Word
if (bmp == null) throw new Exception("fail to load the document preview"); //. Copyright © <2000-2016> by <RasterEdge.com>. All Rights Reserved.
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Introduction to Computer Programming in Visual Basic for Applications (VBA) 
A SunCam online continuing education course 
www.SunCam.com
Copyright
2012 Kwabena Ofosu, Ph.D., P.E., PTOE
Page 83 of 91 
91 
or close an open Excel workbook 
ThisWorkBook.Close 
3.2 The VBA Object Browser 
This element of the VBA environment provides details on all objects, methods, properties, events 
and the libraries available in VBA. To open the Object Browser 
Click on the View menu. 
Select Object Browser.  
How to C#: Preview Document Content Using XDoc.PowerPoint
if (bmp == null) throw new Exception("fail to load the document preview"); //. Copyright © <2000-2016> by <RasterEdge.com>. All Rights Reserved.
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Erase PDF pages. Miscellaneous. Plenty of VB.NET class demo codes and tutorials are given on How to Use XDoc.PDF SDK in VB.NET program. All Rights Reserved.
pdf rotate page and save; rotate all pages in pdf and save
Introduction to Computer Programming in Visual Basic for Applications (VBA) 
A SunCam online continuing education course 
www.SunCam.com
Copyright
2012 Kwabena Ofosu, Ph.D., P.E., PTOE
Page 84 of 91 
91 
Review the Object Browser. 
C# WPF Viewer: Load, View, Convert, Annotate and Edit PDF
Erase PDF pages. Miscellaneous. Plenty of VB.NET class demo codes and tutorials are given on How to Use XDoc.PDF SDK in VB.NET program. All Rights Reserved.
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Introduction to Computer Programming in Visual Basic for Applications (VBA) 
A SunCam online continuing education course 
www.SunCam.com
Copyright
2012 Kwabena Ofosu, Ph.D., P.E., PTOE
Page 85 of 91 
91 
Look for and select an object that you created. 
In the Members window, review the properties, methods, functions, procedures (that you 
created) etc., that are associated with this object. 
C# HTML5 Viewer: Load, View, Convert, Annotate and Edit Raster
NET RasterEdge HTML5 Viewer offers user the functionality to rotate images 90 images to Tiff (.tif, .tiff) online, create PDF document from All Rights Reserved
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C# TIFF: TIFF Editor SDK to Read & Manipulate TIFF File Using C#.
Here we list all features supported by RasterEdge C#.NET to process Tiff file and its pages, like merge append, split, extract, create, insert, rotate, sort, etc
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Introduction to Computer Programming in Visual Basic for Applications (VBA) 
A SunCam online continuing education course 
www.SunCam.com
Copyright
2012 Kwabena Ofosu, Ph.D., P.E., PTOE
Page 86 of 91 
91 
Select a sub procedure that you created. 
Review a brief description at the bottom of the Object Browser. 
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limit the pages of each file to 8 pages options.MaxPages = 8 outputFileName + "_" + i.ToString() + ".pdf") Next ' Split input PDF file to All Rights Reserved.
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Introduction to Computer Programming in Visual Basic for Applications (VBA) 
A SunCam online continuing education course 
www.SunCam.com
Copyright
2012 Kwabena Ofosu, Ph.D., P.E., PTOE
Page 87 of 91 
91 
Click on the Libraries/ Project drop down. 
Introduction to Computer Programming in Visual Basic for Applications (VBA) 
A SunCam online continuing education course 
www.SunCam.com
Copyright
2012 Kwabena Ofosu, Ph.D., P.E., PTOE
Page 88 of 91 
91 
Select VBAProject to review the library associated with your specific project. 
Introduction to Computer Programming in Visual Basic for Applications (VBA) 
A SunCam online continuing education course 
www.SunCam.com
Copyright
2012 Kwabena Ofosu, Ph.D., P.E., PTOE
Page 89 of 91 
91 
Select an object to see its members. 
Browsing through the libraries reveals the vast capabilities of the VBA language.  
Introduction to Computer Programming in Visual Basic for Applications (VBA) 
A SunCam online continuing education course 
www.SunCam.com
Copyright
2012 Kwabena Ofosu, Ph.D., P.E., PTOE
Page 90 of 91 
91 
4. CONCLUSION 
This course has presented a broad overview of fundamental concepts and principles of computer 
programming, and presented them in situations encountered by practicing engineers and 
scientists. All codes were developed using the Visual Basic for Applications (VBA) 
programming language.  
In this course, topics on functions and procedures, and working with string variables were 
covered. A tour of the VBA object library was also presented. Several examples relevant to 
engineering were used to illustrate and demonstrate the concepts and methods learned in this 
class. Two mini-projects were used to demonstrate the programming concepts and methods in 
situations encountered by practicing engineers. 
This course has enabled participants to identify situations where programming is relevant and 
will be of advantage to the professional. Practitioners are strongly encouraged to look out for 
situations in their domains of expertise where programming solutions are applicable and will be 
of benefit to their work and their organization.  
Computer programming requires a careful and meticulous approach, and can only be mastered 
and retained by practice and repetition.  
Good Luck and Happy Programming.  
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