public static Boolean IsFileLocked(FileInfo file)
{
try {
using (file.Open(FileMode.Open, FileAccess.ReadWrite, FileShare.None)) {
return(false);
}
}
catch //(IOException)
{
// Could not open file -> probably we have no
// write access to the file
return(true);
}
}
// https://stackoverflow.com/a/937558
public static bool IsFileLocked(this 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
{
stream?.Close();
}
//file is not locked
return(false);
}
public override Stream Open(FileMode mode)
{
return(instance.Open(mode));
}
