Question

I’m creating Excel files using AutomationFactory.CreateObject("Excel.Application").

I’m using these lines of codes to create a dropdown list:

mySheet.Range("A1").Validation.Add(Type:=Interop.Excel.XlDVType.xlValidateList, _
        AlertStyle:=Interop.Excel.XlDVAlertStyle.xlValidAlertStop, _
        [Operator]:=Interop.Excel.XlFormatConditionOperator.xlBetween,
                                            Formula1:="=List!$C$3:$C$903")

The formula (Formula1:=”=List!$C$3:$C$903″) returns 900 rows

In Excel 2010 it works perfectly, however, in Excel 2003 no dropdownlist are created on the cell

Any alternative ways?

Answer 1

In order to create a dropdown list from another sheet in Excel, you have to create a named range and then declare the named range in the Validation formula.

See this tutorial on how to do it from scratch.