read/write serial port with csharp

RS232
.....\Backup
.....\......\RS232
.....\......\.....\ClassDiagram1.cd
.....\......\.....\Form1.cs
.....\......\.....\Form1.Designer.cs
.....\......\.....\Form1.resx
.....\......\.....\Program.cs
.....\......\.....\Properties
.....\......\.....\..........\AssemblyInfo.cs
.....\......\.....\..........\Resources.Designer.cs
.....\......\.....\..........\Resources.resx
.....\......\.....\..........\Settings.Designer.cs
.....\......\.....\..........\Settings.settings
.....\......\.....\RS232.csproj
.....\......\RS232.sln
.....\RS232
.....\.....\bin
.....\.....\...\Debug
.....\.....\...\.....\RS232.exe
.....\.....\...\.....\RS232.pdb
.....\.....\...\.....\RS232.vshost.exe
.....\.....\...\.....\RS232.vshost.exe.manifest
.....\.....\...\Release
.....\.....\...\.......\RS232.exe
.....\.....\...\.......\RS232.vshost.exe
.....\.....\ClassDiagram1.cd
.....\.....\Form1.cs
.....\.....\Form1.Designer.cs
.....\.....\Form1.resx
.....\.....\obj
.....\.....\...\Debug
.....\.....\...\.....\Refactor
.....\.....\...\.....\RS232.csproj.FileListAbsolute.txt
.....\.....\...\.....\RS232.csproj.GenerateResource.Cache
.....\.....\...\.....\RS232.exe
.....\.....\...\.....\RS232.fclsRS232Tester.resources
.....\.....\...\.....\RS232.pdb
.....\.....\...\.....\RS232.Properties.Resources.resources
.....\.....\...\.....\TempPE
.....\.....\...\.....\......\Properties.Resources.Designer.cs.dll
.....\.....\...\Release
.....\.....\...\.......\TempPE
.....\.....\...\RS232.csproj.FileListAbsolute.txt
.....\.....\Program.cs
.....\.....\Properties
.....\.....\..........\AssemblyInfo.cs
.....\.....\..........\Resources.Designer.cs
.....\.....\..........\Resources.resx
.....\.....\..........\Settings.Designer.cs
.....\.....\..........\Settings.settings
.....\.....\RS232.csproj
.....\RS232.sln
.....\UpgradeLog.XML
.....\VisualStudio.postbuild
.....\_UpgradeReport_Files
.....\....................\UpgradeReport.css
.....\....................\UpgradeReport.xslt
.....\....................\UpgradeReport_Minus.gif
.....\....................\UpgradeReport_Plus.gif

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