Question

I have a Bitmap that I’m trying to save and I keep getting the “Object is currently in use elsewhere” error. Now I know GDI+ sucks with threading and that I’m supposed to use the lock{} statement but it’s not working. My code is below, what am I doing incorrectly?

Bitmap bitmap = new Bitmap();

lock (bitmap)
{
    bitmap.Save([filepath], ImageFormat.Png);
}

Answer 1

You should lock other dummy object:

var objectForLock = new object()

lock (objectForLock)
{
    Bitmap bitmap = new Bitmap();
    bitmap.Save([filepath], ImageFormat.Png);
}

Not sure if that’s your problem, but that’s the way lock works in .Net.