Microsoft KB Archive/151561

= How to Determine If a Variable Is an Array =

Article ID: 151561

Article Last Modified on 10/11/2006

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APPLIES TO


 * Microsoft Excel 97 Standard Edition
 * Microsoft Excel 95 Standard Edition
 * Microsoft Excel 5.0 Standard Edition
 * Microsoft Excel 98 for Macintosh

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This article was previously published under Q151561





SUMMARY
You can use the IsArray function to test a variable that has been set in a Microsoft Visual Basic for Applications procedure to determine whether it is an array.



MORE INFORMATION
Microsoft provides programming examples for illustration only, without warranty either expressed or implied. This includes, but is not limited to, the implied warranties of merchantability or fitness for a particular purpose. This article assumes that you are familiar with the programming language that is being demonstrated and with the tools that are used to create and to debug procedures. Microsoft support engineers can help explain the functionality of a particular procedure, but they will not modify these examples to provide added functionality or construct procedures to meet your specific requirements. The IsArray function enables you to test a variable to determine whether it is indeed an array. It takes one argument and returns either True, if it is an array, or False if it is not. The IsArray function is useful when you call a function that is supposed to return an array; you can use IsArray to verify that the value returned is an array.   In a new Microsoft Excel Workbook, insert a new module sheet, and then type the following code: Sub IsArrayExample

Dim DataArray(2) As Integer       ' Declare an array. Dim ArrayBoolean As Boolean       ' Declare a Boolean variable.

ArrayBoolean = IsArray(DataArray) ' Check if DataArray is an                                             ' array. If ArrayBoolean = True Then MsgBox "DataArray is an Array." End If

End Sub  Run the IsArrayExample macro.

This macro will display a message box that shows "DataArray is an Array." Click OK to dismiss the message box.

