(Note: This topic was originally posted this on the MSDN WPF Forum, but I thought I'd post here as well, just in case it helps anyone getting started, like me.)

I working on re-writting an old VB app that I wrote in 1999 over in WPF, just to see what I can learn about simple WPF geometry and also learning some good OOP practices that I know so little about. The app draws a "Bolt Hole Pattern" by creating BoltCircle on a Canvas and then drawing several other smaller circles (Hole objects) around the circumference of the BoltCircle to create what is commonly called a "Bolt Hole Pattern" (i.e. 12 holes equally spaced on a 12.500 diameter circle). I am also populating a ListView with the X and Y Coordinates of the Holes. Eventually, I want to print the screen (Entire window, ListView and Canvas) somehow.

Here's a link to a PDF file with some screenshots and code-behind: http://www.jordanmachine.com/BoltHolePattern.pdf

The PDF shows a screenshot of the original VB app I wrote back in 1999, and a first pass at the WPF version I'm working on. I also put the C# code-behind for the logic in the PDF.

All comments on structure welcome. I'm trying to learn as much about OOP practices as I can, and this just turned out to be an app that I know about that has some real world use here in our factory.

Current battles:

1. I'm having to manually update the ListView, by setting ItemsSource to null and then back to the HoleList. I must need to do some Notify stuff with the list, but don't know what to do. The list is jsut a list field on the main window class, so maybe that is the problem.

2. Too manu decimals places are showing up the ListView. Is a ValueConverter thingy needed?

3. I want the textboxes to select all text when you tab into them.

4. I want a spinner control to drive the Hole Count and Start Angle textboxes. Looks liek WPF doesn't have this?