check if file is open

[Guest]

hi,

i have an open & delete btn. onclick of open as visio drawing opens in visio
& onclick of delete the drawing gets deleted from the filesystem. The problem
is i am unable to perform these actions if the file is already opened in
another instance of visio. how do i check if it's already opened and then
throw an error msg?

thanks

 

[Guest]

Hi Dear jes

check this

http://msdn.microsoft.com/library/d...pref/html/frlrfsystemiofilemodeclasstopic.asp

bye
Venkat_KL

 

[Kevin Spencer]

Use Try/Catch.

--
HTH,

Kevin Spencer
Microsoft MVP
..Net Developer
You can lead a fish to a bicycle,
but you can't make it stink.

 

[Guest]

Hi,

I am not using the filestream to open the file, i am using visio's object to
open the file. Do u think the try/catch would be the only resolution to check
if the file is already opened?

If File.Exists(filename) Then
visioApp = CreateObject("visio.application")
visioDocs = visioApp.Documents
visioDoc = visioDocs.OpenEx(filename, 32)
end if

thanks

 

[Kevin Spencer]

Hi jes,

There are other ways to see if the file is already opened, but none of them
are pretty. This is one case where catching an exception is a good idea.

You can read more about the way to do this here:

http://msdn.microsoft.com/library/d...de/html/cpconHandlingCOMInteropExceptions.asp
http://msdn.microsoft.com/library/d...n-us/cpguide/html/cpconhresultsexceptions.asp

--
HTH,

Kevin Spencer
Microsoft MVP
..Net Developer
You can lead a fish to a bicycle,
but you can't make it stink.