XL2000: How to Determine If a Variable Is an Array (213282)



The information in this article applies to:

  • Microsoft Excel 2000

This article was previously published under Q213282

SUMMARY

In Microsoft Excel, 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, including, but not limited to, the implied warranties of merchantability and/or fitness for a particular purpose. This article assumes that you are familiar with the programming language being demonstrated and the tools used to create and debug procedures. Microsoft support professionals 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 needs. If you have limited programming experience, you may want to contact a Microsoft Certified Partner or the Microsoft fee-based consulting line at (800) 936-5200. For more information about Microsoft Certified Partners, please visit the following Microsoft Web site: For more information about the support options that are available and about how to contact Microsoft, visit the following Microsoft Web site: 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 an array. The IsArray function is useful when you call a function that is supposed to return an array; you can use IsArray function in a manner similar to the following sample code to verify that the value returned is an array.
  1. Start Microsoft Excel.
  2. Press ALT+F11 to start the Microsoft Visual Basic editor.
  3. On the Insert menu, click Module.
  4. Type the following code in the module sheet:
    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
    						
  5. Press ALT+F11 to return to Excel.
  6. On the Tools menu, point to Macro, and then click Macros.
  7. Click IsArrayExample and then click Run.

    The following message appears:

    DataArray is an Array

  8. Click OK to close the message box.

REFERENCES

For more information about the IsArray function, in the Visual Basic Editor, click Microsoft Visual Basic Help on the Help menu, type IsArray Function in the Office Assistant or the Answer Wizard, and then click Search to view the topic.

Modification Type:MinorLast Reviewed:10/11/2006
Keywords:kbdtacode kbhowto kbProgramming KB213282