Open Excel File Stored In Access Database

Feb 8, 2007

I need to open an Excel file that has been stored in the Access Database using the insert Object functionality of MS Access manually.

What i am aware of is that i cant just read the field containing the Excel File into a Byte Array and pass it to the Excel object in C#,as the file is wrapped in the OLE Wrapper used by Access while inserting the file in database.

I have tried locating the Header of Excel file from the byte array and read the file from there on but it is not working.

while (true)
{
if (0xE11AB1A1E011CFD0 == BitConverter.ToUInt64(byStream, i))
break;
i++;
}
output.Write(byStream, i, byStream.Length - i-1);

byStream is a byte array into which i have read the Excel file from Database.
I am locating the Excel file header in the byte stream and am writing the byte array to a file from that location.But on opening the written file it dosent work.
Similar approach had worked in case of Images but now in this case.

Can some one please tell me as to how i can open the Excel File.
Can I use Interop.Access object to achieve the goal??

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May 25, 2015

I want to delete an excel file from within access vba. Problem is that if the file is open, it obviously cannot be deleted. so I need to check to see if that specific excel workbook is open and if it is, I want to close it before I can delete it.

All of the answers here involve creating an excel object and opening it before closing it. If I do that all that happens is a second instance of the workbook opens then closes leaving the originally open workbook still open.

Sub xx()
Dim XLapp As New Excel.Application
Dim ObjXL As Excel.Workbook
Set ObjXL = XLapp.Workbooks.Open("C:dropboxexcelimport.xlsx ")
ObjXL.Application.Visible = True

[Code] .....

The above code demonstrates my problem, if the import.xlsx file is already open then the code just opens another instance of this workbook and then closes it again leaving the original workbook open and as such cannot be deleted.

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Private Sub Command0_Click()
On Error GoTo Err_Command0_Click

Dim stAppName As String

stAppName = "Excel.exe N:OPSCOMMONOpsResearchContact CenterDI CCL Reporting dBApps by Agent.xls"
Call Shell(stAppName, 1)

Exit_Command0_Click:
Exit Sub

Err_Command0_Click:
MsgBox Err.Description
Resume Exit_Command0_Click

End Sub

Heres the mess I made out of it:
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:confused:

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halloo everybody
Here is my code to check an excel sheet wether it is open or not.
It is working good in the following situations.

1.if the excel file is not yet opened. then it is opening and bringing a value from some cell of the sheet1.
2.If the file is already opened and not yet closed. it is not opening again it is understanding that the file is already openrd and bringing the cell value.
3.It is working when it is closed by the user and again clicked the button to open. It is opening and bringing the value.
4.NOW the problem starts.
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please kindly check my code and respond to me .
here is my code but it is not working when the file is already opened.


Private sub Cmd_Click()

Dim XL As New Excel.Application
Dim wbk As New Excel.Workbook
Dim ws As New Excel.Worksheet


WorkBookName = "Book2.xls"
If Not WorkbookOpen(WorkBookName) Then
chk = 1
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Else
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End With
Else
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End With
End If
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Set SA = Nothing
Set XL = Nothing
Set wbk = Nothing
End Sub
_________________________________________________


Function WorkbookOpen(WorkBookName As String) As Boolean
'Returns TRUE if the workbook is open
WorkbookOpen = False
On Error GoTo WorkBookNotOpen
If Len(Excel.Workbooks(WorkBookName).Name) > 0 Then
WorkbookOpen = True
Exit Function
End If

WorkBookNotOpen:
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Thank you.
Kiran.

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