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How to track my Excel 2007 appliction is open.

Posted on 2013-05-13
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Last Modified: 2013-05-17
Hi, I am running vb.net application and open the excel file. Data are updated accordingly from vb.net to excel. I am managed this part.

I did use this function code to track my excel is open or not :-

Private Function TestEXCEL() as Boolean
dim fs as filestream
try
      fs = File.Open(xlpath, FileMode.Open, FileAccess.Read, FileShare.None)
     TestEXCEL = False
Catch ex as Exception
     TestEXCEL = True
End try

While after i do force close my excel file, my code try to reopen the file by coding i do face the error message as follows at this line

xlApp = New Excel.Application
xlworkbook = xlApp.Workbooks.Open(xlpath)   <-- Error pointed over here

Error message : COMException was unhandled
Excel cannnot open the file 'Tri_data.xlsx' because teh file format or file extension in not valid. Verif that the file has not been corrupted and that the file extension matches the format of the file.
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Accepted Solution

by:
CodeCruiser earned 2000 total points
ID: 39161029
What happens if you change

fs = File.Open(xlpath, FileMode.Open, FileAccess.Read, FileShare.None)

to

fs = File.Open(xlpath, FileMode.Open, FileAccess.Write,  FileShare.None)


Also add a

fs.Close

after the =False line.
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Author Comment

by:Ramanathan Tito Titan Nadar
ID: 39170305
Hi I am away from office, by tomorrow l am to cheek out and reply. sorry for delay .Thank you .
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