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Links To Excel Code Examples

Range/Wkb/Wks Variables
Add Grand Totals Using Ranges
Using Range Offset Property
Using Range Find Method
Union Of Ranges
Parse Range Strings
Delete Duplicate Rows
Delete Rows And Columns
Worksheet Variables
TypeName And TypeOf
Loop Through Worksheets
Loop Through Open Workbooks
Form Button Magic
Command Button Magic
Add Worksheets Dynamically
Find Last Row Or Column
Copy And Paste Special
Copy To Specific Cell Types
Range Copy With Filter
Open An Excel File
Open An Excel File w/Params
Open An Excel File On Web
Save A Workbook
Clone A Workbook
Test If WEB URL Exists
Parse Using Split Command
Color Management
Convert Cell Color To RGB
Sort Methods 2003 - 2010
Sort Alpha/Numeric In ASCII
Search Using Match Function
Search Using Vlookup Function
Using Find Instead of Vlookup
Remove String Non-Printables
Auto_Open And Auto_Close
Initialize Form At Open
Edit Numerics In UserForm
Load Combo And List Boxes
Floating Sheet Combo Boxes
Advanced User Form Coding
Excel Events
Worksheet Change Events
Binary Search Of Array
Typecast Constants
Excel Error Handling
Handling Optional Parameters
Data Validation Drop Downs
Read A Text File w/Handle
Write A Text File w/Handle
Read A Text Fiile w/Script
Text File Processing Examples
Test For Exists Or Open
Splash Screen
Dynamically Load Formulas
Date Examples
Date Find Same Days
Convert Month To Number
Initialize Arrays
Load Arrays Using Evaluate
Redim An Array
Reassign Button Action
Timer Functions
Legacy Calendar Control
Excel 2010 Date Picker
Date Picker Alternative
Generate Multiple Worksheets
Read Access Data Into Excel
Send Outlook Email w/Attach
Copy AutoFilters To Sheets
Export A Text File
Get Windows User Name
VBA Format Statement
Manipulate Files via VBA
Dynamically Load Images
Loop Through Worksheet Objects
Loop Through Form Objects
Loop Through Files with DIR
Active-X Checkboxes
Add Forms Checkboxes Dynam
Paste Pictures Into Excel
Copy Pictures Sheet To Sheet
Copy Pictures Sheet To Sheet
Create Forms Buttons With VBA
Extract Filename From Path
Convert R1C1 Format to A1
Special Cells Property

Links To Access Code Examples

Create Recordset With AddNew
Multi-Select List Boxes
Update Field(s) In A Recordset
Import A Tab Delimited File
Export Excel FileDialog
Create Excel Within Access
Open Excel Within Access
Open Excel OBJ From Access
Format Excel From Access
Import Tab Delim w/WinAPI
Initialize Global Variables
Using TempVars For Globals
Access Error Handling
Loop Through Form Controls
Insert A Calendar Control
Create A Filtered Recordset
Populate Combo Boxes
Bookmarks And Forms
Combo Box Multiple Sources
Passing Form Objects
Create VBA SQL Statements
Create Dynamic Queries
Display File Images On A Form
Manipulate Files via VBA
Manipulate Files via Scripting
Number Subform Records
Reference Subform Objects
Parse Delimited Fields
Parameterized Queries (VBA)
Manipulating QueryDefs In VBA
FindFirst On Combined Keys
Dlookup Command
Dlookup In Form Datasheet
Execute SQL Delete Records
Commit Form To Table
Report With No Data
Reference Form Objects
DSNLess Connections To MySQL
Print Active Form Record
Count Records in Linked Tables
Delete Empty Tables
Open Linked SQL Tables

 

Using Timers to Improve Performance

If you have several alternatives to accomplish the same programming objective, it is sometimes useful to model each method and see the actual time it takes to run. The "Timer" function of Excel provides the number of seconds elapsed since Midnight at the instant the Timer function is executed. By subtracting the beginning timer value from the ending timer value, elapsed time can be measured. This is a very useful way to determine the the most efficient technique to accomplish a mission such as: MATCH vs. VLOOKUP, array sorts vs. worksheet sorts, and hundreds of other examles.

The following simple example shows how to time a loop that occurs 250 million times.

Program Code

Option Explicit
Option Base 1

Sub ExampleOfUsingTimer()
Dim i As Long
Dim j As Long

Dim dteStartTime As Single
Dim dteEndTime As Single
Dim dblSum As Double

dblSum = 0

' ****************************************************************
' Use The Timer Function To Measure the Length Of Time for Loops
' ****************************************************************

dteStartTime = Timer

For i = 1 To 500000
    For j = 1 To 500
        dblSum = dblSum + 1
    Next j
Next i

dteEndTime = Timer

MsgBox ("Run Time = " & dteEndTime - dteStartTime & " Seconds" & vbCrLf & _
    "And The Number Of Loops is " & dblSum)

End Sub

Using Timers to Close A Workbook After Inactivity

The following example shows how to close a workbook if there is no activity. At the Workbook_Open event, a timer starts. If the time exceeds a certain value, the workbook is saved and closed. In the Worksheet_Change event section, any keystroke will reset the timer so that the countdown to the save and close starts again.

Program Code

' %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
' This Goes in the Workbook Class Section
' %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
Option Explicit
Private Sub Workbook_Open()
' ***************************************************
' When The Workbook Opens, Start The Timer
' ***************************************************
Call StartTimer
End Sub


' %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
' This Goes in the Worksheet Class Section
' %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
Option Explicit

Private Sub Worksheet_Change(ByVal Target As Range)
' ***********************************************************
' If A Keystroke Is Detected, Turn Off The Timer
' Then Reset It Again For The Time To Close and Save Workbook
' ***********************************************************
Call StopTimer
Call StartTimer
End Sub


' %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
' This Goes in the General Modules Section
' %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
Option Explicit
Public TimeToClose
Sub StartTimer()
' ******************************************************************
' This Starts The Countdown For Inactivity... Change the 2 Minutes
' Below To Any Time You Require
' ******************************************************************
TimeToClose = Now + TimeValue("00:02:00")
Application.OnTime TimeToClose, "SaveAndCloseWorkbook", , True
End Sub

Sub SaveAndCloseWorkbook()
' ******************************************************************
' When The Period of Inactivity is Detected, Save And Close The
' Workbook
' ******************************************************************
ThisWorkbook.Close SaveChanges:=True
End Sub

Sub StopTimer()
' ******************************************************************
' This Stops The Timer
' ******************************************************************
Application.OnTime TimeToClose, "SaveAndCloseWorkbook", , False
End Sub

Using Timers to Increment A Cell Counter

This simple example shows how to increment the contents of a cell every 5 seconds.

Program Code

' ************************************************************
' Initiated from a Button (General Module)
' ************************************************************
Option Explicit
Public Sub Stop_Timer()
Application.OnTime RunWhen, "msgticker", , False
End Sub

' ************************************************************
' At Worksheet Open Time  (General Module)
' ************************************************************
Option Explicit
Public Sub Auto_Open()
' *****************************************
' Start Timer
' *****************************************
msgticker
End Sub

' ************************************************************
' Called From Other Routines (General Module)
' ************************************************************
Public RunWhen
Public intCellValue As Integer

Sub msgticker()
RunWhen = Now + TimeValue("00:00:05")
intCellValue = intCellValue + 1
Cells(1, 1).Value = intCellValue
Application.OnTime RunWhen, "msgticker", , True
End Sub