Copy sheet from excel workbook to another workbook - excel

Question

Below is my code for the copying process from one workbook to another.
I looked up a lot of similar issues but i could not get this working.
when I run this the two files open up and then i get a third one called book1 with all results. then i get an error "Copy method of Worksheet class failed".
What Im trying to do is copy the general report sheet from o.Book to xBook.
I want to leave the books open for now until this is correct but i will use Xbook later.
Can I get help with this please?
Private Sub Button1_Click(sender As Object, e As EventArgs) Handles Button1.Click
Dim oExcel As Excel.ApplicationClass
Dim oBook As Excel.WorkbookClass
Dim oBooks As Excel.Workbooks
Dim xExcel As Excel.ApplicationClass
Dim xBook As Excel.WorkbookClass
Dim xBooks As Excel.Workbooks
Dim user As String
Dim opath As String
Dim opathS As String
Dim timeStamp As DateTime = DateTime.Now
Dim path2 As String
Label1.Text = "Working..."
'Get the current system user user and set path to file
user = Environment.UserName
opath = "C:\Users\" + user + "\Downloads\ADC Open.xls"
path2 = "C:\Users\" + user + "\Downloads\Personal.xlsm"
opathS = "C:\Users\" + user + "\Desktop\Report.xls"
'Create first object
oExcel = CreateObject("Excel.Application")
oExcel.DisplayAlerts = False
oExcel.Visible = True
oBooks = oExcel.Workbooks
'Create second object
xExcel = CreateObject("Excel.Application")
xExcel.DisplayAlerts = False
xExcel.Visible = True
xBooks = xExcel.Workbooks
'open first book
oBook = oBooks.Open(opath)
'open second book
xBook = xBooks.Open(path2)
oBook.Worksheets("general_report").Copy(After:=xBook.Worksheets("general_report"))
'Run the subroutine.
'xExcel.Run("Execute")
'xExcel.DisplayAlerts = False
'Delete sheet not needed any more
'xBook.Sheets("general_report").Delete
'xExcel.DisplayAlerts = False
'Save results to new file
xBook.SaveAs(opathS)
Label1.Text = "File saved at: " + opathS
'Close the workbook and quit Excel.
oBook.Close(False)
System.Runtime.InteropServices.Marshal.
ReleaseComObject(oBook)
oBook = Nothing
System.Runtime.InteropServices.Marshal.
ReleaseComObject(oBooks)
oBooks = Nothing
oExcel.Quit()
System.Runtime.InteropServices.Marshal.
ReleaseComObject(oExcel)
oExcel = Nothing
'Delete original file after finished with it
'System.IO.File.Delete(opath)
End Sub

Answer 1

Can't add a comment yet, but if VB is the same across all platforms, shouldn't you Set the variable after declaring it ?
Set MyObject = YourObject ' Assign object reference.
Set MyObject = Nothing ' Discontinue association.

Answer 2

After all the responses I started looking into these object settings and find code that help with the explainations, I refactored my previous version and this is what I came up with. It works like a charm now. Thanks everyone for the help and comments.
Private Sub Button1_Click(sender As Object, e As EventArgs) Handles Button1.Click
Dim xlApp As Excel.Application = New Excel.Application
Dim user As String
Dim sourcePath As String
Dim targetPath As String
Dim savePath As String
Label1.Text = "Working..."
user = Environment.UserName
sourcePath = "C:\Users\" + user + "\Desktop\Report\ADC Open (Dell GTIE JIRA).xls"
targetPath = "C:\Users\" + user + "\Desktop\Report\Personal1.xlsm"
savePath = "C:\Users\" + user + "\Desktop\Report\Report" & Format(Now(), "DD-MMM-YYYY") & ".xlsm"
Dim wbSourceBook As Excel.Workbook = xlApp.Workbooks.Open _
(sourcePath, ReadOnly:=False)
Dim wbTargetBook As Excel.Workbook = xlApp.Workbooks.Open _
(targetPath, ReadOnly:=False)
'Excel expects to receive an array of objects that
'represent the worksheets to be copied or moved.
Dim oSheetsList() As Object = {"general_report"}
wbSourceBook.Sheets(oSheetsList).Copy(Before:=wbTargetBook.Worksheets(1))
wbSourceBook.Close(True)