WCF & WPF 聊天程序源码For those that have read some of my other CodeProject articles you will probably know, that I am not shy about trying out new technologies. But one good thing about that is that I generally share what I learn right here, and this article is one of the hardest ones I've done IMHO. This article is about how to create a peer-to-peer chat application using Windows Communication Foundation (WCF) and also how to make it look nice using Windows Presentation Foundation (WPF).&l t;br>When I first started reading about WCF, the first place I looked was the MSDN WCF Samples (which I read a lot), but they weren't that great. I also found lots of chat apps based on the MSDN versions, which were no good as they could not return the list of users within the chat application. So I wanted to create a nice WPF styled app with the list of connected chatters. So I hunted around a bit more and eventually came across a damn fine/brilliant article by Nikola Paljetak, which I have tailored for this article. I have OK'd this with Nikola, and the original article content is here. To be honest the original article was pure brilliance (it should be mentioned Nikola is a Professor), but it took a while for me to get what was going on, as the code wasn't commented. I have now commented all code, so I think it will still make a very nice discussion/article for those that are new to WCF/WPF. I was totally new to WCF before this article, so if I can do it, so can all of you.So that's what this article is all about. At the end of the article, I would hope you understand at least some of the key WCF areas, and possibly be inspired enough to look at the WPF side of this article also. t;br>When I first started reading about WCF, the first place I looked was the MSDN WCF Samples (which I read a lot), but they weren't that great. I also found lots of chat apps based on the MSDN versions, which were no good as they could not return the list of users within the chat application. So I wanted to create a nice WPF styled app with the list of connected chatters. So I hunted around a bit more and eventually came across a damn fine/brilliant article by Nikola Paljetak, which I have tailored for this article. I have OK'd this with Nikola, and the original article content is here. To be honest the original article was pure brilliance (it should be mentioned Nikola is a Professor), but it took a while for me to get what was going on, as the code wasn't commented. I have now commented all code, so I think it will still make a very nice discussion/article for those that are new to WCF/WPF. I was totally new to WCF before this article, so if I can do it, so can all of you.So that's what this article is all about. At the end of the article, I would hope you understand at least some of the key WCF areas, and possibly be inspired enough to look at the WPF side of this article also.