WinForm在PictrueBox控件上建立矩形选框裁剪图片

E:\studioSpace\PicCut\PicCut\bin\Debug\PicCut.exe.config E:\studioSpace\PicCut\PicCut\bin\Debug\PicCut.exe E:\studioSpace\PicCut\PicCut\bin\Debug\PicCut.pdb E:\studioSpace\PicCut\PicCut\obj\Debug\PicCut.csprojResolveAssemblyReference.cache E:\studioSpace\PicCut\PicCut\obj\Debug\PicCut.MainWindow.resources E:\studioSpace\PicCut\PicCut\obj\Debug\PicCut.Properties.Resources.resources E:\studioSpace\PicCut\PicCut\obj\Debug\PicCut.csproj.GenerateResource.Cache E:\studioSpace\PicCut\PicCut\obj\Debug\PicCut.exe E:\studioSpace\PicCut\PicCut\obj\Debug\PicCut.pdb