WPF DrawingContext seems ignore SnapToDevicePixels

Question

I'm drawing a chart by direct calls to DrawLine on the DrawingContext. Since I want to avoid any anti aliasing feature, I tryed to put the SnapToDevicePixels=true on the parent UIElement, but I still have anti-alias:

The project was an old OS project not written for WPF4, but I retarget it to the Framework4, can this be an issue too ?

Answer 1

I found this link where they basically say you should set

ParentUIElement.SetValue(RenderOptions.EdgeModeProperty, EdgeMode.Aliased);

It worked for me, so it might be worth a try!