Error of missingmemberexception was unhandled

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VB

Imports Excel = Microsoft.Office.Interop.Excel
Imports Microsoft.Office.Interop
Imports Microsoft.Office.Interop.Excel


        Select Case ComboBox1.SelectedItem

            Case "Open Excel"

                Dim oExcel As New Microsoft.Office.Interop.Excel.Application()
                Dim oBook As Excel.WorkbookClass
                Dim oBooks As Excel.WorkbookClass

                'Start Excel and open the workbook
                oExcel.Visible = True
                'oBooks = oExcel.Workbooks

                oExcel = oExcel.Open("H:\Copy of Book1.xlsm")

                'Run the subroutine.
                oExcel.Run("Sheet1")

Hello, I have an error of MissingMemberException was unhandled after I run the code at

VB

oExcel = oExcel.Open("H:\Copy of Book1.xlsm")

How do I solve this problem? Thank you!!

What I have tried:

I have tried adding references such as Microsoft Office Excel

Posted 4-Mar-18 20:37pm

Member 13650651

Updated 4-Mar-18 23:34pm

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CHill60 5-Mar-18 3:12am

Are you using the right versions of the references for the excel you are trying to use?

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Maciej Los · Answer 1 · 2018-03-04T23:34:00

Solution 1

You can't open workbook the way you're trying to do that. You have to do this through the collection of workbooks:

VB

oBook = oExcel.Workbooks.Open("H:\Copy of Book1.xlsm")

For further details, please see:
How to: Programmatically Open Workbooks[^]
Excel Object Model Overview[^]

Posted 4-Mar-18 23:34pm

Maciej Los