I have the following download event in an .aspx Web Forms page using .Net 4.8 but label1.text is not getting updated after a successful download. Please advise.

The .NET Framework 4.8 Stream.CopyToAsync() method has a default buffer size of 81,920. I think that buffer size is fine but I also want to pass a cancellation token. To pass a token I also have to provide a buffer size.

A somewhat intermittent issue with supposedly Rect.Contains(Point) method. To be exact, it only happened once and I haven’t been able to reproduce it ever since.
There’s a block of code that among other things finds an upper bound of a group of points such that the first point in group and the upper boundary point are within a rect of a certain size.