L2 文件流读写
.............\TextStreamDemo
.............\TextStreamDemo.sln
.............\TextStreamDemo.suo
.............\..............\bin
.............\..............\...\Debug
.............\..............\...\.....\content.txt
.............\..............\...\.....\rt
.............\..............\...\.....\TextStreamDemo.pdb
.............\..............\...\.....\TextStreamDemo.vshost.exe
.............\..............\Controler.cs
.............\..............\Form1.cs
.............\..............\Form1.Designer.cs
.............\..............\Form1.resx
.............\..............\obj
.............\..............\...\Debug
.............\..............\...\.....\Refactor
.............\..............\...\.....\TempPE
.............\..............\...\.....\TextStreamDemo.csproj.GenerateResource.Cache
.............\..............\...\.....\TextStreamDemo.Form1.resources
.............\..............\...\.....\TextStreamDemo.pdb
.............\..............\...\.....\TextStreamDemo.Properties.Resources.resources
.............\..............\...\.....\TextStreamDemo.SaveForm.resources
.............\..............\...\TextStreamDemo.csproj.FileList.txt
.............\..............\...\TextStreamDemo.csproj.FileListAbsolute.txt
.............\..............\Program.cs
.............\..............\Properties
.............\..............\..........\AssemblyInfo.cs
.............\..............\..........\Resources.Designer.cs
.............\..............\..........\Resources.resx
.............\..............\..........\Settings.Designer.cs
.............\..............\..........\Settings.settings
.............\..............\SaveForm.cs
.............\..............\SaveForm.Designer.cs
.............\..............\SaveForm.resx
.............\..............\TextStreamDemo.csproj
.............\..............\VTune
.............\..............\.....\TextStreamDemo.vpj
.............\..............\.....\TextStreamDemo.vws