This a udp programming, which has the form and source code, you can look at the

udp\WindowsApplication1\bin\Debug\WindowsApplication1.exe
...\...................\...\.....\WindowsApplication1.pdb
...\...................\...\.....\WindowsApplication1.vshost.exe
...\...................\Form1.cs
...\...................\Form1.Designer.cs
...\...................\Form1.resx
...\...................\obj\Debug\WindowsApplication1.csproj.GenerateResource.Cache
...\...................\...\.....\WindowsApplication1.exe
...\...................\...\.....\WindowsApplication1.Form1.resources
...\...................\...\.....\WindowsApplication1.pdb
...\...................\...\.....\WindowsApplication1.Properties.Resources.resources
...\...................\...\WindowsApplication1.csproj.FileListAbsolute.txt
...\...................\Program.cs
...\...................\...perties\AssemblyInfo.cs
...\...................\..........\Resources.Designer.cs
...\...................\..........\Resources.resx
...\...................\..........\Settings.Designer.cs
...\...................\..........\Settings.settings
...\...................\WindowsApplication1.csproj
...\...................\WindowsApplication1.sln
...\...................\WindowsApplication1.suo
...\...................\obj\Debug\Refactor
...\...................\...\.....\TempPE
...\...................\bin\Debug
...\...................\obj\Debug
...\...................\bin
...\...................\obj
...\...................\Properties
...\WindowsApplication1
udp

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