Description: P2P chat program, you can give it a try, maybe you can make a QQ out Oh.
File list (Check if you may need any files):
聊天室
......\ChatClient
......\..........\AssemblyInfo.cs
......\..........\bin
......\..........\...\Debug
......\..........\ChatClient.cs
......\..........\ChatClient.csproj
......\..........\ChatClient.csproj.user
......\..........\ChatClient.resx
......\..........\ChatClient.sln
......\..........\ChatClient.sln.old
......\..........\ChatClient2.cs
......\..........\ChatClient2.resx
......\..........\Form1.cs
......\..........\Form1.resx
......\..........\licenses.licx
......\..........\obj
......\..........\...\Debug
......\ChatServer
......\..........\AssemblyInfo.cs
......\..........\bin
......\..........\...\Debug
......\..........\ChatServer.csproj
......\..........\ChatServer.csproj.user
......\..........\ChatServer.sln
......\..........\ChatServer.sln.old
......\..........\ChatServerForm.cs
......\..........\ChatServerForm.resx
......\..........\Client.cs
......\..........\CommandProcessor.cs
......\..........\Form1.cs
......\..........\Form1.resx
......\..........\licenses.licx
......\..........\obj
......\..........\...\Debug