File.Copy or File.Move with Overwrite

Question

 

Hi all,

I am trying to either copy or move a file after passing or failing validation.

However the file may already exist .in the destination

As per here http://msdn2.microsoft.com/en-us/library/9706cfs5.aspx

I have used the boolean overwrite to True

 

My code is File.Copy(filename, "c:\\Filechecker\\inboxbackup\\" + basename, true);

but I get the error

'System.IO.IOException' Cannot create a file when that file already exists

 

Am I usung the overwrite correctly ?

What about checking if the file exists first and deleting ?

Would that work

 

Ray..

Answer 1

 

very odd. Are you sure "basename" file is already closed, if you are writing to it within your application?

 

To check if a file exists:

 

if (System.IO.File.Exists("filename"))

{

   //delete

   System.IO.File.Delete("filename"); //try/catch exception handling needs to be implemented

}

Answer 2

Please try this one.

 

if (System.IO.File.Exists("filepath"))

System.IO.File.Copy("newfilename", "filepath", true);

else

{

System.IO.File.Create("path");

System.IO.File.Move("newfilename", "path");

}

 

Answer 3

Thx for both your help..

It helped me come up with the following

 

// check if file already exists in inboxbackup if it does then delete
if (File.Exists("c:\\Filechecker\\inboxbackup\\" + basename) )
{
File.Delete("c:\\Filechecker\\inboxbackup\\" + basename);
}
// copy file to backup folder - no "file already exists errors as check above has removed any existing files

File.Copy(filename, "c:\\Filechecker\\inboxbackup\\" + basename);

 

Ray..