MS Excel: How to use the ISNULL Function (VBA)
This Excel tutorial explains how to use the Excel ISNULL function with syntax and examples.
Description
The Microsoft Excel ISNULL function returns TRUE if the expression is a null value. Otherwise, it returns FALSE.
The ISNULL function is a built-in function in Excel that is categorized as an Information Function. It can be used as a VBA function (VBA) in Excel. As a VBA function, you can use this function in macro code that is entered through the Microsoft Visual Basic Editor.
Syntax
The syntax for the ISNULL function in Microsoft Excel is:
IsNull( expression )
Parameters or Arguments
- expression
- A variant that contains a string or numeric value.
Returns
The ISNULL function returns TRUE if the expression is a NULL value.
The ISNULL function returns FALSE if the expression is not a NULL value.
Applies To
- Excel for Office 365, Excel 2019, Excel 2016, Excel 2013, Excel 2011 for Mac, Excel 2010, Excel 2007, Excel 2003, Excel XP, Excel 2000
Type of Function
- VBA function (VBA)
Example (as VBA Function)
The ISNULL function can only be used in VBA code in Microsoft Excel.
Let's look at some Excel ISNULL function examples and explore how to use the ISNULL function in Excel VBA code:
IsNull(null) Result: TRUE IsNull("Tech on the Net") Result: FALSE
For example:
Dim LValue As Boolean LValue = IsNull("Tech on the Net")
In this example, the variable called LValue would contain FALSE as a value.
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