绘制直线和曲线
..............\Case02_1
..............\........\Case02_1.csproj
..............\........\Form1.Designer.cs
..............\........\Form1.cs
..............\........\Form1.resx
..............\........\Program.cs
..............\........\Properties
..............\........\..........\AssemblyInfo.cs
..............\........\..........\Resources.Designer.cs
..............\........\..........\Resources.resx
..............\........\..........\Settings.Designer.cs
..............\........\..........\Settings.settings
..............\........\bin
..............\........\...\Debug
..............\........\...\.....\Case02_1.exe
..............\........\...\.....\Case02_1.pdb
..............\........\...\.....\Case02_1.vshost.exe
..............\........\...\.....\Case02_1.vshost.exe.manifest
..............\........\obj
..............\........\...\Debug
..............\........\...\.....\Case02_1.Form1.resources
..............\........\...\.....\Case02_1.Properties.Resources.resources
..............\........\...\.....\Case02_1.csproj.FileListAbsolute.txt
..............\........\...\.....\Case02_1.csproj.GenerateResource.Cache
..............\........\...\.....\Case02_1.exe
..............\........\...\.....\Case02_1.pdb
..............\........\...\.....\TempPE
..............\Case02_1.sln
..............\Case02_1.suo