![]() ![]() When you create a function in VBA, it becomes available in the entire workbook just like any other regular function.Now before I tell you how this function is created in VBA and how it works, there are a few things you should know: When you have the above code in the module, you can use this function in the workbook.īelow is how this function – GetNumeric – can be used in Excel. If IsNumeric(Mid(CellRef, i, 1)) Then Result = Result & Mid(CellRef, i, 1) ![]() Function GetNumeric(CellRef As String) as Long The below code creates a function that will extract the numeric parts from an alphanumeric string. Let me create a simple user-defined function in VBA and show you how it works. Creating a Simple User Defined Function in VBA I will cover more on this in the ‘Different Ways of Using a User Defined Function in Excel’ section. When you create a User Defined Function (UDF) using VBA, you can use that function in the worksheet just like any other function. This means that you can not change the color of the cell with a function itself (however, you can do it using conditional formatting with the custom function). With a function, you can not change the object’s properties. With a custom function, you can use it in a separate column and it can return a TRUE if the value in a cell is negative and FALSE if it’s positive. In this case, the subroutine ends up changing the properties of the range object (by changing the color of the cells). To give you an example, if you have a list of numbers (both positive and negative), and you want to identify the negative numbers, here is what you can do with a function and a subroutine.Ī subroutine can loop through each cell in the range and can highlight all the cells that have a negative value in it. Subroutine in VBAĪ ‘Subroutine’ allows you to execute a set of code while a ‘Function’ returns a value (or an array of values). Hence, these are best suited for situations where you can’t get the result using the inbuilt functions. Note that custom functions created using VBA can be significantly slower than the inbuilt functions. In this case, you can create a custom function that is easy to read and use. ![]() The inbuilt functions can get the work done but the formula is long and complicated.In this case, you can create a custom function based on your requirements. The inbuilt functions can’t do what you want to get done.While there are already 450+ inbuilt Excel functions available in the worksheet, you may need a custom function if: As a part of your VBA subroutine code or another Function code.As a formula in the worksheet, where it can take arguments as inputs and returns a value or an array of values.When you have created a Function procedure using VBA, you can use it in three ways: Using a Function procedure, you can create a function that you can use in the worksheet (just like any regular Excel function such as SUM or VLOOKUP). Where to put the VBA Code for a User-Defined FunctionĪ Function procedure is a VBA code that performs calculations and returns a value (or an array of values).Calling a User Defined Function from Other Workbooks.Using User Defined Functions in VBA Procedures and Functions.Different Ways of Using a User Defined Function in Excel.Understanding the Scope of a User Defined Function in Excel.Creating a Function that Returns an Array.Creating a Function with Indefinite Number of Arguments.Creating a Function in VBA with an Array as the Argument.Creating a Function in VBA with Optional Arguments.Creating a Function in VBA with Multiple Arguments.Creating a Function in VBA with One Argument.Creating a Function in VBA without Any Arguments. ![]()
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