VBA IsEmpty Function

VBA IsEmpty Function

Objective of VBA IsEmpty Function

VBA IsEmpty function is categorized as an Information function in VBA. It is a built-in function in MS Office Excel VBA. This function checks specified Expression or Variant is empty or not. It has one input parameter. It returns a boolean value (True or False). If specified varient is empty then it returns True, Otherwise it returns False. We can use this function as a worksheet function and also used in VBA. This function can be used in either procedure or function in a VBA editor window in Excel. We can use this VBA IsEmpty function any number of times in any number of procedures or functions. In the following section we learn what is the syntax and parameters of the IsEmpty function, where we can use this VBA IsEmpty function and real-time examples.

Syntax of VBA IsEmpty Function

The syntax of the VBA IsEmpty function is

IsEmpty(Expression)

The VBA IsEmpty function returns a boolean value either True or False.

Parameters or Arguments

The IsEmpty function has one input parameter or argument.
Where
Expression: It is a required parameter. The Expression that you want to evaluate.

Where we can apply or use VBA IsEmpty Function?

We can use this VBA IsEmpty function in MS Office 365, MS Excel 2016, MS Excel 2013, 2011, Excel 2010, Excel 2007, Excel 2003, Excel 2016 for Mac, Excel 2011 for Mac, Excel Online, Excel for iPhone, Excel for iPad, Excel for Android tablets and Excel for Android Mobiles.

Example 1: Check an expression(“VBAF1”) is empty or not

Here is a simple example of the VBA IsEmpty function. This below example checks the specified string(“VBAF1) is empty or not. The output of below macro is FALSE

'Check an expression("VBAF1") is empty or not
Sub VBA_IsEmpty_Function_Ex1()
    
    'Variable declaration
    Dim iExpression As String
    Dim sOutput As Boolean
    
    iExpression = "VBAF1"
    
    sOutput = IsEmpty(iExpression)
   
    'Display output message
    MsgBox "The expression('VBAF1') is empty or not : " & sOutput, vbInformation, "VBA IsEmpty Function"
    
End Sub

Output: Here is the screen shot of the first example output.
VBA IsEmpty Function

Example 2: Check given expression(12345) is empty or not

Here is another example of the VBA IsEmpty function. This below example checks the specified number(12345) is empty or not. The output of below macro is FALSE.

'Check given expression(12345) is empty or not
Sub VBA_IsEmpty_Function_Ex2()
    
     'Variable declaration
    Dim iExpression As Integer
    Dim sOutput As Boolean
    
    iExpression = 12345
    
    sOutput = IsEmpty(iExpression)
   
    'Display output message
    MsgBox "The expression(12345) is empty or not : " & sOutput, vbInformation, "VBA IsEmpty Function"
    
End Sub

Output: Here is the screen shot of the second example output.
VBA IsEmpty Function

Example 3: Check an expression(Null) is empty or not

Here is a simple example of the VBA IsEmpty function. This below example checks the specified variable(Null) is empty or not. The output of below macro returns False.

'Check an expression(Null) is empty or not
Sub VBA_IsEmpty_Function_Ex3()
    
   'Variable declaration
    Dim iExpression
    Dim sOutput As Boolean
    
    iExpression = Null
    
    sOutput = IsEmpty(iExpression)
   
    'Display output message
    MsgBox "The expression(Null) is empty or not : " & sOutput, vbInformation, "VBA IsEmpty Function"
    
End Sub

Output:Here is the screen shot of the third example output.
VBA IsEmpty Function

Example 4: Check an expression(Empty) is empty or not

Here is a simple example of the VBA IsEmpty function. This below example checks the specified string(“ABC123”) is numeric or not. The output of below macro is TRUE.

'Check an expression(Empty) is empty or not
Sub VBA_IsEmpty_Function_Ex4()
    
    'Variable declaration
    Dim iExpression
    Dim sOutput As Boolean
    
    iExpression = Empty
    
    sOutput = IsEmpty(iExpression)
   
    'Display output message
    MsgBox "The expression(Empty) is empty or not : " & sOutput, vbInformation, "VBA IsEmpty Function"
    
End Sub

Output: Here is the screen shot of the fourth example output.
VBA IsEmpty Function

Example 5: Check a variable(undeclared) is empty or not

Here is a simple example of the VBA IsEmpty function.This below example checks the specified undeclared variable is empty or not. The output of below macro is TRUE.

'Check a variable(undeclared) is empty or not
Sub VBA_IsEmpty_Function_Ex5()
    
    'Variable declaration
    Dim iExpression
    Dim sOutput As Boolean
       
    sOutput = IsEmpty(iExpression)
   
    'Display output message
    MsgBox "The expression(undeclared variable) is empty or not : " & sOutput, vbInformation, "VBA IsEmpty Function"
    
End Sub

Output: Here is the screen shot of the fifth example output.
VBA IsEmpty Function

Instructions to use Macro Codes

Here are the step by step instructions to use the VBA IsEmpty function in Excel VBA.

  • Open an Excel workbook.
  • Press Alt+F11 to open VBA Editor window.
  • Go to Insert menu and click on module from the available options.
  • Copy above specified macros to the VBA editor.
  • Select any procedure from above codes and click on ‘Run’ command or use Keyboard shortcut ‘F5’.

List of VBA Functions:

Please click on below link to go back to see all List of VBA Functions.

VBA Information Functions List of VBA Functions