问题
Encoder.RenderMethod is one of the params which can be used when saving a bitmap, etc.
It is nominally documented here:
https://docs.microsoft.com/en-us/dotnet/api/system.drawing.imaging.encoder.rendermethod
But the page says nothing at all about what it actually does. It just talks about EncoderParameters in general (and is the same boilerplate text as for other parameters, some of which are also poorly documented).
Thanks
来源：https://stackoverflow.com/questions/55384129/what-does-encoder-rendermethod-do