VBA for Excel 2007 tutorial-function to sum values


Create function to sum values

In this example, you will learn to create your own function to sum numerical values. This function can be run in the Excel sheet much like you do with other predefined functions such as count, counta, contif, sum, sumif,ect.

To run this example VBA code, you will need to create a standard module and copy and paste the VBA code below to the block of the module(Module1).Then in the Excel sheet, you can call the function to perform its task.

VBA for Excel: vba code to create a user-defined function to sum values



VBA for Excel: calling user-defined function

VBA code for this example:



Public Function Totalize(ParamArray par() As Variant)
  Dim i As Integer
  Dim result As Variant
  result = 0
  For i = 0 To UBound(par)
    result = result + par(i)
  Next
  Totalize = result
End Function
Note: by using ParamArray, you can pass an array parameters to the function. 

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