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CP212 Exam Preparation Guide

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Course
CP212 (CP212)

Institution
Wilfrid Laurier University (WLU )

The "CP212 Exam Preparation Guide" is a concise document designed to assist students in preparing for the "Windows Application Programming" course. It revolves around using VBA for Windows application development, with the main reference being the textbook "VBA for Modellers." The guide likely cove...

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Uploaded on July 23, 2023
Number of pages 23
Written in 2022/2023
Type Other
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Chapter 12: Error Handling
Types of Errors
● Syntax/compile errors
● Runtime errors
● Logic errors

Run time errors:
● Two options
○ Ignore error
○ create special code to deal with the situation
● Option 1 - Ignore error
○ On Error Resume Next ‘turns on error handling
Appliation.DisplayAlerts = False
Code that may cause error goes here
On Error GoTo 0 ‘turns off error handling
● Display a message on error with Err Object
○ When an error occurs, an Err object is created
○ The default Number property of the built-in Err object has a nonzero value that an
If statement can check for.

○
● Option 2 - Handle the error/Write an Error Handler

, ○

○
■ In the label, if you want to return to the line after the one that caused the
error, use the statement Resume Next.

Chapter 13 - Working with Files and Folders
● Dialogue Boxes for File Operations
○ The FileDialogue object can be used to Open and Save different office file format
○ Different versions of FileDIalogue:
■ msoFileDialogOpen
■ msoFileDialogSaveAs
■ msoFileDialogFilePicker
● user can select multiple files
● All selected files are stored in the SelectedItems collection
■ msoFileDialogFolderPicker
● User select a folder from a dialog box
● Unless Cancel is clicked, the folder is stored it as
Selectedltems(1).

, ○
● The FileSystemObject Object
○ Used to check whether a file exists, rename a file, …. Etc
○ Declare FileSystemObject

■
○ Methods of FileSystemObject include: CreateFolder, CopyFolder, DeleteFolder,
CreateFile, DeleteFile, CopyFile, FileExists, and GetFolder
● Working with Text Files

○

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