Is there any performance or any kind of effect on OS's file system permission between the codes below:
FileStream fs = new FileStream(@"file.dat", FileMode.Create, FileAccess.Write);
// and
FileStream fs = File.Create(@"file.dat");
PS: except the usage of a static function issue.
According to reflector, File.Create(path) is just:
new FileStream(path, FileMode.Create, FileAccess.ReadWrite, FileShare.None, 4096, FileOptions.None);
and new FileStream(@"file.dat", FileMode.Create, FileAccess.Write) also gets the 4096 buffer - so no, it is just the FileAccess.ReadWrite which is different.
And I don't think FileAccess.Write is much better than FileAccess.ReadWrite because they both locks the file - but I may be wrong.
to comment: because FileShare is set to None and it is write access you want they properly (=I don't know for sure) ain't much of a difference. However, if you wanted Read access the new FileStream(path, mode, access) approach is different because FileShare is set to Read as a default. However, in this case you want to create a file, and therefore it does not make much sense to only read ;-)
If I recall correctly, File.Create("file.dat") just wraps a call to new FileStream("file.dat", FileMode.Create, FileAccess.ReadWrite).
