IIF function is used to evaluate an expression and perform one of two actions based on the outcome of the evaluation. For example:
IIF (Value > 10, Perform this action if Value is <= 10, Perform this action is Value is > 10)
This function is available within VBA code and also as an Excel function. Usually the IIF function is used to perform quick logical assessments and can be nested to perform more complicated evaluations. It is however important to remember that nested IF statements can become very complicated and difficult to support and maintain.
Now let’s look at an example. Let’s assume that we want to calculate the length of the string only if it contains the value Excel Help and Excel.
It is important to note that we could have used the IIF statement in one of our For Next loops to run through all the rows on a worksheet.
Dim StringToProcess As String’Variable to hold the string to be processed StringToProcess = ActiveSheet.Cells(2, 1).Value ActiveSheet.Cells(6, 1).Value = IIf(InStr(StringToProcess, “ExcelHelp”) > 0, IIf(InStr(StringToProcess, ” Excel “) > 0, Len(StringToProcess), 0), 0)
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