Can't close EXCEL from my VB.NET application

SteveS

I'm attempting to close EXCEL from within my VB.NET application.
Using the excel object library to write data to my spreadsheet is working
fine but when I try to quit application object it does not work. I know this
because I can still see the Excel application running in Task Manager.

How do I shut down EXCEL?

I have tried the QUIT method and Interop.RemoveC omponent.

--
Thank You

Mar 31 '06 #1

Subscribe Reply

16235

Ken Tucker [MVP]

Hi,

Use marshal.release comobject

http://www.vb-tips.com/default.aspx?...3-cc46c8615787

Ken
---------------

"SteveS" wrote:

I'm attempting to close EXCEL from within my VB.NET application.
Using the excel object library to write data to my spreadsheet is working
fine but when I try to quit application object it does not work. I know this
because I can still see the Excel application running in Task Manager.

How do I shut down EXCEL?

I have tried the QUIT method and Interop.RemoveC omponent.

--
Thank You

Mar 31 '06 #2

SteveS

Ken,
I used the following but it still leaves a Excel process open in Task
Manager.

System.Runtime. InteropServices .Marshal.Releas eComObject(xlAp p)
System.Runtime. InteropServices .Marshal.Releas eComObject(wb)
System.Runtime. InteropServices .Marshal.Releas eComObject(xlSh eet)
xlApp = Nothing
wb = Nothing
xlSheet = Nothing

GC.Collect()
GC.WaitForPendi ngFinalizers()
GC.Collect()

--
Thank You
"Ken Tucker [MVP]" wrote:

Hi,

Use marshal.release comobject

http://www.vb-tips.com/default.aspx?...3-cc46c8615787

Ken
---------------

"SteveS" wrote:
I'm attempting to close EXCEL from within my VB.NET application.
Using the excel object library to write data to my spreadsheet is working
fine but when I try to quit application object it does not work. I know this
because I can still see the Excel application running in Task Manager.

How do I shut down EXCEL?

I have tried the QUIT method and Interop.RemoveC omponent.

--
Thank You

Mar 31 '06 #3

Herfried K. Wagner [MVP]

"SteveS" <St****@discuss ions.microsoft. com> schrieb:

I used the following but it still leaves a Excel process open in Task
Manager.

Make sure you are releasing the objects in the order they were created. In
addition you may want to post relevant parts of the code to enable people
here to determine whether or not you are really releasing all objects.

--
M S Herfried K. Wagner
M V P <URL:http://dotnet.mvps.org/>
V B <URL:http://classicvb.org/petition/>

Apr 1 '06 #4

Jim Hughes

This works for me:

'Clean-up: Close the workbook and quit Excel.
If oBook IsNot Nothing Then
oBook.Close(Fal se)
System.Runtime. InteropServices .Marshal.Releas eComObject(oBoo k)
oBook = Nothing
End If
If oBooks IsNot Nothing Then
System.Runtime. InteropServices .Marshal.Releas eComObject(oBoo ks)
oBooks = Nothing
End If
If oExcel IsNot Nothing Then
oExcel.Quit()
System.Runtime. InteropServices .Marshal.Releas eComObject(oExc el)
oExcel = Nothing
End If

"SteveS" <St****@discuss ions.microsoft. com> wrote in message
news:1F******** *************** ***********@mic rosoft.com...

Ken,
I used the following but it still leaves a Excel process open in Task
Manager.

System.Runtime. InteropServices .Marshal.Releas eComObject(xlAp p)
System.Runtime. InteropServices .Marshal.Releas eComObject(wb)
System.Runtime. InteropServices .Marshal.Releas eComObject(xlSh eet)
xlApp = Nothing
wb = Nothing
xlSheet = Nothing

GC.Collect()
GC.WaitForPendi ngFinalizers()
GC.Collect()

--
Thank You
"Ken Tucker [MVP]" wrote:
Hi,

Use marshal.release comobject

http://www.vb-tips.com/default.aspx?...3-cc46c8615787

Ken
---------------

"SteveS" wrote:
> I'm attempting to close EXCEL from within my VB.NET application.
> Using the excel object library to write data to my spreadsheet is
> working
> fine but when I try to quit application object it does not work. I
> know this
> because I can still see the Excel application running in Task Manager.
>
> How do I shut down EXCEL?
>
> I have tried the QUIT method and Interop.RemoveC omponent.
>
> --
> Thank You

Apr 1 '06 #5

SteveS

I've tried your resolution and other posts offering diiferent resolutions
unfortunately the EXCEL process remains present in Task Manager.
I've attached my code in hopes that it may shed some light on the issue.
As you can see the code is quite simple.....

My code is shown below:

Dim xlapp As Excel.Applicati on
xlapp = CType(CreateObj ect("Excel.Appl ication"), Excel.Applicati on)
Dim wb As Excel.Workbook = xlapp.Workbooks .Open(fileName)
Dim xlSheet As Excel.Worksheet

Dim currRow As Integer

xlSheet = wb.Worksheets(1 )
currRow = PTLRecordNumber

xlSheet.Cells(c urrRow, 1) = Me.LotNumber
xlSheet.Cells(c urrRow, 2) = Me.ScrewMachine Number
xlSheet.Cells(c urrRow, 3) = Me.PartNumber
xlSheet.Cells(c urrRow, 4) = Me.PlatingDate
xlSheet.Cells(c urrRow, 5) = 0
xlSheet.Cells(c urrRow, 6) = Me.LoadSize
xlSheet.Cells(c urrRow, 7) = Me.FullLoad
xlSheet.Cells(c urrRow, 8) = Me.Mean
xlSheet.Cells(c urrRow, 9) = Me.Hi
xlSheet.Cells(c urrRow, 10) = Me.Low
xlSheet.Cells(c urrRow, 11) = Me.PLTankNumber
xlSheet.Cells(c urrRow, 12) = Me.BasketNumber
xlSheet.Cells(c urrRow, 13) = Me.CarrierNumbe r
xlSheet.Cells(c urrRow, 14) = Me.AdhesionTest
xlSheet.Cells(c urrRow, 15) = Me.Solderabilit yTest
xlSheet.Cells(c urrRow, 16) = Me.OscilineNiTa nk
xlSheet.Cells(c urrRow, 17) = Me.Comments

'ss wb.SaveAs(fileN ame, Excel.XlFileFor mat.xlExcel9795 )
wb.Save()
wb.Close()
xlapp.Quit()
'ss xlApp.UserContr ol = True
'ss xlApp.Visible = True

'Attempt to close excel - notorious problem with .net not closing
all instances of Excel in task manager!!
System.Runtime. InteropServices .Marshal.Releas eComObject(xlSh eet)
System.Runtime. InteropServices .Marshal.Releas eComObject(wb)
System.Runtime. InteropServices .Marshal.Releas eComObject(xlap p)
xlapp = Nothing
wb = Nothing
xlSheet = Nothing

GC.Collect()
GC.WaitForPendi ngFinalizers()
GC.Collect()
GC.WaitForPendi ngFinalizers()
GC.Collect()
--
Thank You
"Herfried K. Wagner [MVP]" wrote:

"SteveS" <St****@discuss ions.microsoft. com> schrieb:
I used the following but it still leaves a Excel process open in Task
Manager.

Make sure you are releasing the objects in the order they were created. In
addition you may want to post relevant parts of the code to enable people
here to determine whether or not you are really releasing all objects.

--
M S Herfried K. Wagner
M V P <URL:http://dotnet.mvps.org/>
V B <URL:http://classicvb.org/petition/>

Apr 3 '06 #6

Herfried K. Wagner [MVP]

"SteveS" <St****@discuss ions.microsoft. com> schrieb:

I've tried your resolution and other posts offering diiferent resolutions
unfortunately the EXCEL process remains present in Task Manager.
I've attached my code in hopes that it may shed some light on the issue.
As you can see the code is quite simple.....

My code is shown below:

Dim xlapp As Excel.Applicati on
xlapp = CType(CreateObj ect("Excel.Appl ication"), Excel.Applicati on)

Why not use 'New Excel.Applicati on()'? Additionally I suggest to wait a few
seconds after your application has released the references. Excel is an
automation server that typically doesn't shut down immediately after the
last reference has been removed.

--
M S Herfried K. Wagner
M V P <URL:http://dotnet.mvps.org/>
V B <URL:http://classicvb.org/petition/>

Apr 3 '06 #7

aaron.kempf

excel is a piece of crap you should remove excel from every computer on
your network

the biggest time-waster ever invented; at least i know it's worse than
even internet explorer lol

learn Accesss or SQL screw excel in the mouth

Apr 5 '06 #8

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