Cybercrux

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IsFileLocked

protected bool IsFileLocked(FileInfo file)
{
FileStream stream = null;

try
{
stream = file.Open(FileMode.Open, FileAccess.Read, FileShare.None);
}
catch (IOException)
{
//the file is unavailable because it is:
//still being written to
//or being processed by another thread
//or does not exist (has already been processed)
return true;
}
finally
{
if (stream != null)
stream.Close();
}

//file is not locked
return false;
}