After struggling with WinAPI code and hacks in .NET 1.0 I was really looking forward to the TextRenderer class when I first heard about it. But as it turns out, not only is TextRenderer horrible at measuring character size it is also monumentally slow at rendering text.
One of many flaws with the RichTextBox control is its lack of support for drag/drop operations. Luckily it’s simple to add. In fact, it’s so simple you’ll wonder why they didn’t just support it out of the box.
Recently while reworking the code for the Ascgen dotNET I needed to make sure that a variable is between 0 and 255 before converting it to a byte, and I needed it to be as fast as possible since it can get called several million times a second.