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Tutorial 8: Developing an Excel Application
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Objectives Create an application
Create, edit, and delete defined names for cells and ranges Paste a list of defined names as documentation Use defined names in formulas Add defined names to existing formulas New Perspectives on Microsoft Excel 2010
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Objectives Create validation rules for data entry
Protect the contents of worksheets and workbooks Add, edit, and delete comments Learn about macro viruses and Excel security features Add the Developer tab to the Ribbon New Perspectives on Microsoft Excel 2010
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Objectives Create and run a macro
Edit a macro using the Visual Basic Editor Assign a macro to a keyboard shortcut and a button Save and open a workbook in macro-enabled format Minimize the Ribbon New Perspectives on Microsoft Excel 2010
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Visual Overview New Perspectives on Microsoft Excel 2010
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Excel Application and Defined Names
New Perspectives on Microsoft Excel 2010
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Planning an Excel Application
A spreadsheet written or tailored to meet specific needs The interface helps others use it Typically includes reports and charts, a data entry area, a custom interface, instructions, and documentation New Perspectives on Microsoft Excel 2010
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Naming Cells and Ranges
Use a defined name to: Assign a meaningful, descriptive name to a cell or range Quickly navigate within a workbook to the cell with the defined name Create a more descriptive formula New Perspectives on Microsoft Excel 2010
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Creating Defined Names
Must begin with a letter or an underscore Can include letters, numbers, periods and underscores, but not other symbols or spaces Cannot be a valid cell address, function name, or reserved word Can include as many as 255 characters Short, meaningful names (5–15 characters) are more practical Are not case sensitive New Perspectives on Microsoft Excel 2010
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Creating Defined Names
Use the Name box to create defined names New Perspectives on Microsoft Excel 2010
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Creating Defined Names
Use the Selection dialog box to create defined names by selection New Perspectives on Microsoft Excel 2010
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Creating Defined Names
Use the Name Manager dialog box to edit and delete defined names New Perspectives on Microsoft Excel 2010
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Creating Defined Names
Use the Paste Names Command to generate a list of names Paste defined names in the Documentation worksheet after the workbook is complete New Perspectives on Microsoft Excel 2010
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Using Defined Names in Formulas
Descriptive formulas are simpler to enter and understand If a range reference is used rather than a defined name, defined names do not automatically replace the range reference in the formula New Perspectives on Microsoft Excel 2010
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Adding Defined Names to Existing Formulas
Defined names are not automatically substituted for cell addresses in a formula Replace cell addresses in existing formulas with their defined names to make formulas more understandable New Perspectives on Microsoft Excel 2010
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Visual Overview New Perspectives on Microsoft Excel 2010
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Data Validation and Protection
New Perspectives on Microsoft Excel 2010
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Validating Data Entry Ensures that correct data is entered and stored in a worksheet Protects cells with formulas from accidental deletion Reduces repetitious keystrokes and mouse clicks Each validation rule defines criteria for data that can be stored in a cell or range Use Data Validation dialog box to specify validation criteria, input message, and error alert for the active cell New Perspectives on Microsoft Excel 2010
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Specifying Validation Criteria
When you create a validation rule, specify the type of data allowed as well as a list or range of acceptable values (validation criteria) New Perspectives on Microsoft Excel 2010
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Specifying Validation Criteria
New Perspectives on Microsoft Excel 2010
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Creating an Input Message
Reduces the chance of a data-entry error Provides additional information about type of data allowed for the cell Appears as a ScreenTip next to selected cell New Perspectives on Microsoft Excel 2010
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Creating an Error Alert Style and Message
An error alert determines what happens after a user attempts to make an invalid entry in a cell that has a validation rule defined Tree error alert styles: Stop, Warning, and Information New Perspectives on Microsoft Excel 2010
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Creating a List Validation Rule
Restricts a cell to accept only entries that are on a list you create Create the list of valid entries in the Data Validation dialog box, or use a list of valid entries in a single column or row New Perspectives on Microsoft Excel 2010
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Protecting a Worksheet and a Workbook
Reduces data-entry errors by limiting access to certain parts of the workbook Prevents users from changing cell contents, workbook organization, or viewing formulas New Perspectives on Microsoft Excel 2010
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Locking and Unlocking Cells
A cell’s locked property determines whether changes can be made to that cell Locked property has no impact as long as worksheet is unprotected; after worksheet is protected, locked property is in control Default: Locked property is turned on for each cell, and worksheet protection is turned off Common practice: Protect the worksheet, but leave some cells unlocked New Perspectives on Microsoft Excel 2010
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Protecting a Worksheet
Specify the actions still available to users A protected worksheet can be unprotected Require a password to turn off protection only if you are concerned that users might make changes New Perspectives on Microsoft Excel 2010
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Protecting a Workbook Keeps a worksheet from being modified
Protecting the structure prohibits renaming, deleting, hiding, or inserting worksheets Protecting the windows prohibits moving, resizing, closing, or hiding parts of the window Default: Protect only the structure of the workbook, not the windows used to display it New Perspectives on Microsoft Excel 2010
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Unprotecting a Worksheet and a Workbook
A worksheet must be unprotected to edit its contents A workbook must be unprotected to change its structure New Perspectives on Microsoft Excel 2010
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Inserting Comments Use comments to:
Explain contents of a particular cell Provide instructions to users Share ideas and notes from several users collaborating on a project New Perspectives on Microsoft Excel 2010
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Visual Overview New Perspectives on Microsoft Excel 2010
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Working with Macros New Perspectives on Microsoft Excel 2010
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Automating Tasks with Macros
Macros perform repetitive tasks consistently and faster than you can After the macro is created and tested, tasks are done exactly the same way each time Use Developer tab to create and run macros New Perspectives on Microsoft Excel 2010
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Protecting Against Macro Viruses
Computer program designed to copy itself into other programs with the intention of causing mischief or harm Macro viruses Type of virus that uses a program’s own macro programming language to distribute the virus Microsoft Office 2010 provides several options for levels of security New Perspectives on Microsoft Excel 2010
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Macro Security Settings
Control what Excel will do about macros when the workbook is opened New Perspectives on Microsoft Excel 2010
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Macro Security Settings
Set macro security in the Trust Center Use Trusted Locations to define file paths for files considered trustworthy Use a digital signature to identify the author of a workbook that contains macros New Perspectives on Microsoft Excel 2010
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Recording a Macro For simple macros, use the macro recorder to record keystrokes and mouse actions as they are performed For sophisticated macros, enter a series of commands in the Visual Basic for Applications (VBA) programming language New Perspectives on Microsoft Excel 2010
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Running a Macro Either use the specified shortcut key or select the macro in the Macro dialog box New Perspectives on Microsoft Excel 2010
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Options for Fixing Macro Errors
Rerecord the macro using the same macro name Delete the recorded macro; record it again Run the macro one step at a time to locate the problem; use one of the previous methods to correct the problem New Perspectives on Microsoft Excel 2010
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Working with the Visual Basic Editor
Components Code window contains the VBA code Project Explorer window displays a treelike diagram consisting of every open workbook Menu bar contains menus of commands used to edit, debug, and run VBA statements Accessed through Macro dialog box or Visual Basic button in Code group on Developer tab New Perspectives on Microsoft Excel 2010
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Working with the Visual Basic Editor
New Perspectives on Microsoft Excel 2010
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Understanding the Structure of Macros
Each macro (sub procedure) begins with Sub followed by the name of the sub procedure and a set of parentheses (the arguments) Comments about the macro follow the statement and do not include any actions The body of the macro follows the comments End Sub statement indicates the end of the sub procedure New Perspectives on Microsoft Excel 2010
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Understanding the Structure of Macros
A Code window can contain several sub procedures Each procedure is separated from the others by SubProcedureName() statement at the beginning, and End Sub statement at the end Sub procedures are organized into modules New Perspectives on Microsoft Excel 2010
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Editing a Macro Using the Visual Basic Editor
The Visual Basic Editor provides tools to assist in writing error-free code As you type a command, the editor provides pop-up windows and text to help you insert the correct code New Perspectives on Microsoft Excel 2010
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Creating Macro Buttons
A macro can be assigned to a button placed directly in the worksheet Clicking a button (with a descriptive label) can be more intuitive and simpler than trying to remember combinations of keystrokes Form Controls New Perspectives on Microsoft Excel 2010
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Creating Macro Buttons
New Perspectives on Microsoft Excel 2010
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Saving Workbooks with Macros
Default Excel Workbook format is a macro-free workbook (.xlsx file extension) To save the workbook with the macros, save the file as a macro-enabled workbook (.xlsm file extension) New Perspectives on Microsoft Excel 2010
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Opening a Workbook with Macros
First time a workbook opens, a Security Warning appears in Message Bar providing the option to: Enable macros so they can be run, or Open the workbook with the macros disabled New Perspectives on Microsoft Excel 2010
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Customizing the Ribbon
Minimize the Ribbon Makes more space for a worksheet Only Quick Access Toolbar and tab names display Create new tabs and groups Hide tabs or commands Rename tabs or commands New Perspectives on Microsoft Excel 2010
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