Hi!

Today I wanted to change the left image on one of the nodes of an UltraTree and suddenly all nodes disappeared. I did an undo, tried it again with same result. Instead of changing the image I tried to add a new node but again, all nodes disappeared. I had this UltraTree for nearly 3 years now, last change has been a long time ago but there have never been problems. When I looked into the .Designer.cs part of the class I could see that VS Designer removed all nodes, the instance of UltraTree was still there.

I tried it with other UltraTrees in my project and all had the same behaviour. For testing I added an empty Form to my project and an UltraTree onto that Form and that worked, I could add nodes, images without a problem. I compared the working and not working forms and after a while I figured out that if one or several nodes also has a Key specified this causes the problem. When I removed the key from my main working class there where no problems, the other way around if I added a Key to one node in the test form the nodes disappeared! Unfortunately I need the keys so I cannot simply remove them.

I'm using NetAdvantage 10.2 in VS 2008 on Windows XP Professional but the behavior is the same on Windows 7, tried it on a colleague's machine. Looks like a bug to me.

Regards, Wolfgang