This is what I have written some of the features of the mimic has been achieved Tencent chat source code, which uses serialization and deserialization, as well as comprehensive knowledge of multi-threading, etc., hoping to help beginners!

MyOwnQQTest
...........\FriendBAL
...........\.........\bin
...........\.........\...\Debug
...........\.........\...\.....\FriendBAL.dll
...........\.........\...\.....\FriendBAL.pdb
...........\.........\...\.....\FriendDAL.dll
...........\.........\...\.....\FriendDAL.pdb
...........\.........\...\.....\FriendModel.dll
...........\.........\...\.....\FriendModel.pdb
...........\.........\FriendBAL.cs
...........\.........\FriendBAL.csproj
...........\.........\LoadBAL.cs
...........\.........\obj
...........\.........\...\Debug
...........\.........\...\.....\FriendBAL.csproj.FileListAbsolute.txt
...........\.........\...\.....\FriendBAL.dll
...........\.........\...\.....\FriendBAL.pdb
...........\.........\...\.....\Refactor
...........\.........\...\.....\........\FriendBAL.dll
...........\.........\...\.....\ResolveAssemblyReference.cache
...........\.........\Properties
...........\.........\..........\AssemblyInfo.cs
...........\FriendDAL
...........\.........\bin
...........\.........\...\Debug
...........\.........\...\.....\FriendDAL.dll
...........\.........\...\.....\FriendDAL.pdb
...........\.........\...\.....\FriendModel.dll
...........\.........\...\.....\FriendModel.pdb
...........\.........\FriendDAL.cs
...........\.........\FriendDAL.csproj
...........\.........\LoadDAL.cs
...........\.........\obj
...........\.........\...\Debug
...........\.........\...\.....\FriendDAL.csproj.FileListAbsolute.txt
...........\.........\...\.....\FriendDAL.dll
...........\.........\...\.....\FriendDAL.pdb
...........\.........\...\.....\Refactor
...........\.........\...\.....\........\FriendDAL.dll
...........\.........\...\.....\ResolveAssemblyReference.cache
...........\.........\Properties
...........\.........\..........\AssemblyInfo.cs
...........\FriendModel
...........\...........\bin
...........\...........\...\Debug
...........\...........\...\.....\FriendModel.dll
...........\...........\...\.....\FriendModel.pdb
...........\...........\Friend.cs
...........\...........\FriendModel.csproj
...........\...........\obj
...........\...........\...\Debug
...........\...........\...\.....\FriendModel.csproj.FileListAbsolute.txt
...........\...........\...\.....\FriendModel.dll
...........\...........\...\.....\FriendModel.pdb
...........\...........\...\.....\Refactor
...........\...........\...\.....\........\FriendModel.dll
...........\...........\Properties
...........\...........\..........\AssemblyInfo.cs
...........\MessageFormatters
...........\.................\bin
...........\.................\...\Debug
...........\.................\...\.....\MessageFormatters.dll
...........\.................\...\.....\MessageFormatters.pdb
...........\.................\MessageFormatter.cs
...........\.................\MessageFormatters.csproj
...........\.................\obj
...........\.................\...\Debug
...........\.................\...\.....\MessageFormatters.csproj.FileListAbsolute.txt
...........\.................\...\.....\MessageFormatters.dll
...........\.................\...\.....\MessageFormatters.pdb
...........\.................\...\.....\Refactor
...........\.................\...\.....\........\MessageFormatters.dll
...........\.................\Properties
...........\.................\..........\AssemblyInfo.cs
...........\Messages
...........\........\bin
...........\........\...\Debug
...........\........\...\.....\FriendModel.dll
...........\........\...\.....\FriendModel.pdb
...........\........\...\.....\Messages.dll
...........\........\...\.....\Messages.pdb
...........\........\FriendListMessage.cs
...........\........\FriendMessage.cs
...........\........\LoadAnswerMessage.cs
...........\........\LoadMessage.cs
...........\........\Message.cs
...........\........\Messages.csproj
...........\........\obj
...........\........\...\Debug
...........\........\...\.....\Messages.csproj.FileListAbsolute.txt
...........\........\...\.....\Messages.dll
...........\........\...\.....\Messages.pdb
...........\........\...\.....\Refactor
...........\........\...\.....\........\Messages.dll
.......

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