https://github.com/tatsuyafujisaki/vba-cheat-sheet

https://github.com/tatsuyafujisaki/vba-cheat-sheet

cheat-sheet vba

Last synced: 25 days ago
JSON representation

• Host: GitHub
• URL: https://github.com/tatsuyafujisaki/vba-cheat-sheet
• Owner: tatsuyafujisaki
• Created: 2017-04-09T14:41:02.000Z (about 8 years ago)
• Default Branch: main
• Last Pushed: 2021-01-07T13:29:49.000Z (over 4 years ago)
• Last Synced: 2025-03-24T00:55:36.366Z (about 1 month ago)
• Topics: cheat-sheet, vba
• Language: Visual Basic
• Size: 3.86 MB
• Stars: 3
• Watchers: 0
• Forks: 1
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

Awesome Lists containing this project

README

        
# Note

* If you specify the length of an array at its declaration, it fixes the dimension of the array. If the dimension of an array is fixed, `ReDim` throws an error.

```vba

Dim xs(2) as String

ReDim xs(3) As String ' "Array already dimensioned" error

Dim ys() As String

ReDim ys(3) String ' No error

ReDim ys(4) String ' No error

```

* `Worksheet1.PageSetup` throws an error if no printer is available.

  * [You cannot use page setup properties in Excel if no printers were installed @ Microsoft](https://support.microsoft.com/en-us/help/291298/you-cannot-use-page-setup-properties-in-excel-if-no-printers-were-inst)

## Default access levels

Keyword|Access level if omitted

---|---

Const|Private

Procedure|Public

Function|Public

## ThisWorkbook

ThisWorkbook|Description

---|---

ThisWorkbook.Path|The parent folder of this workbook

ThisWorkbook.FullName|The absolute path of this workbook

ThisWorkbook.Name|The name of this workbook

## Meta

Keyword|Description

---|---

Application.UserName|John Doe (Not Windows account)

Environ$("USERNAME")|Windows account

Environ$("COMPUTERNAME")|Computer name

## Type-declaration characters

Type-declaration character|Type

---|---

@|Currency

#|Double

%|Integer

&|Long

!|Single

$|String

## ADO (ActiveX Data Objects)

* https://docs.microsoft.com/en-us/sql/ado/guide/appendixes/appendix-a-providers

* https://docs.microsoft.com/en-us/sql/ado/reference/ado-api/updatebatch-and-cancelbatch-methods-example-vb

* https://docs.microsoft.com/en-us/sql/ado/guide/data/sending-the-updates-updatebatch-method

# Best practices

## Best practices for performance

* Append a type-declaration character to the end of each function name.

* A rather than B

  * Use `Cells(rowIndex, columnAlphabet)` rather than `Range(columnAlphabet & rowIndex)` when referring to a single cell using variables.

  * Use `Range(singleAddress1, singleAddress2)` rather than `Range(singleAddress1 & ":" & singleAddress2)` when referring to multiple cells using variables.

  * Use `ByVal` rather than `ByRef` 

  * Use `ThisWorkbook.Sheet1` rather than `ThisWorkbook.Worksheets("Sheet1")`.

  * Use `Dictionary` rather than `Collection`.

  * Use `Set` and `With`.

  * Use early binding rather than late binding.

  ```vba

  ' Early binding

  Dim o As New Object1

  

  ' Late binding

  Dim o As Object1

  Set o = New Object1

  ```

  * Minimize the dots. Cache frequently used properties in variables.

  * Use LongLong rather than Long or Integer in 64-bit Office.

    * Use Long in 32-bit Office because LongLong is unavailable in it.

    

## Best practices for maintainability

* Don't bother to specify default access level.

* Don't pass a Worksheet to a function if the function takes a Range because you can get the Worksheet from `Range.Worksheet`.

* Use square brackets to reference cells.

* A rather than B

  * Use `Private` rather than `Public`.

  * Use `vbNewLine` rather than `vbCrLf`.

  * Use `vbNullString` rather than `""`.

  * Use `Application.PathSeparator` rather than `\`.

  * Use `Worksheet` or `chart` ratehr than their parent `Sheet`.

  * In`ThisWorkbook`, use `Me` rather than `ThisWorkbook`.

  * Use `Addins2` rather than `Addins`.

    * `Addins2` = `Addins` + "addins currently open".

  * Use `Range.Value2` rather than `Range.Value`.

    * `Value2` returns `Currency` and `Date` as double (i.e. without formatting).

  * Use `Recordset!Field1` rather than `Recordset.Fields("Field1").Value`.

## References

[Visual Basic Concepts: Optimizing for Speed](https://msdn.microsoft.com/en-us/library/aa263514.aspx)

# References

* [Language reference VBA](https://msdn.microsoft.com/en-us/vba/vba-language-reference)

  * [DataTypes](https://msdn.microsoft.com/en-us/vba/language-reference-vba/articles/data-types)

  * [Keywords](https://msdn.microsoft.com/en-us/vba/language-reference-vba/articles/keywords-visual-basic-for-applications)

  * [Keyword Summaries](https://msdn.microsoft.com/en-us/vba/language-reference-vba/articles/keyword-summaries)

  * [Methods](https://msdn.microsoft.com/en-us/vba/language-reference-vba/articles/methods-visual-basic-for-applications)

  * [Objects](https://msdn.microsoft.com/en-us/vba/language-reference-vba/articles/objects-visual-basic-for-applications)

  * [Object Browser](https://msdn.microsoft.com/en-us/vba/language-reference-vba/articles/object-browser-visual-basic-for-applications)

  * [Statements](https://msdn.microsoft.com/en-us/vba/language-reference-vba/articles/statements)

    * [Call Statement](https://msdn.microsoft.com/en-us/vba/language-reference-vba/articles/call-statement)

  * [Error Messages](https://msdn.microsoft.com/en-us/vba/language-reference-vba/articles/error-messages)

  * [Events](https://msdn.microsoft.com/en-us/vba/language-reference-vba/articles/events-object-vba-add-in-object-model)

  * [WithEvents](https://msdn.microsoft.com/en-us/vba/language-reference-vba/articles/withevents-keyword)

## Connection string syntax

* [Connection String Syntax](https://docs.microsoft.com/en-us/dotnet/framework/data/adonet/connection-string-syntax)

* [Microsoft OLE DB Provider for SQL Server Overview](https://docs.microsoft.com/en-us/sql/ado/guide/appendixes/microsoft-ole-db-provider-for-sql-server)

* [Using ADO with SQL Server Native Client](https://docs.microsoft.com/en-us/sql/relational-databases/native-client/applications/using-ado-with-sql-server-native-client)