1.//获取模块的完整路径。
string path1 = System.Diagnostics.Process.GetCurrentProcess().MainModule.FileName;
2.//获取和设置当前目录(该进程从中启动的目录)的完全限定目录
string path2 = System.Environment.CurrentDirectory;
3.//获取应用程序的当前工作目录
string path3 = System.IO.Directory.GetCurrentDirectory();
4.//获取程序的基目录
string path4 = System.AppDomain.CurrentDomain.BaseDirectory;
5.//获取和设置包括该应用程序的目录的名称
string path5 = System.AppDomain.CurrentDomain.SetupInformation.ApplicationBase;
6.//获取启动了应用程序的可执行文件的路径
string path6 = System.Windows.Forms.Application.StartupPath;
7.//获取启动了应用程序的可执行文件的路径及文件名
string path7 = System.Windows.Forms.Application.ExecutablePath;
StringBuilder str = new StringBuilder();//拼接字符串输出
str.Append("System.Diagnostics.Process.GetCurrentProcess().MainModule.FileName:" + path1);
str.Append("System.Environment.CurrentDirectory:" + path2);
str.Append("System.IO.Directory.GetCurrentDirectory():" + path3);
str.Append("System.AppDomain.CurrentDomain.BaseDirectory:" + path4);
str.Append("System.AppDomain.CurrentDomain.SetupInformation.ApplicationBase:" + path5);
str.Append("System.Windows.Forms.Application.StartupPath:" + path6);
str.Append("System.Windows.Forms.Application.ExecutablePath:" + path7);
string allPath = str.ToString();
输出运行结果：
1.System.Diagnostics.Process.GetCurrentProcess().MainModule.FileName:C:\Users\Lenovo\Desktop\QRCode\QRCode\bin\Debug\QRCode.vshost.exe
2.System.Environment.CurrentDirectory:C:\Users\Lenovo\Desktop\QRCode\QRCode\bin\Debug
3.System.IO.Directory.GetCurrentDirectory():C:\Users\Lenovo\Desktop\QRCode\QRCode\bin\Debug
4.System.AppDomain.CurrentDomain.BaseDirectory:C:\Users\Lenovo\Desktop\QRCode\QRCode\bin\Debug\
5.System.AppDomain.CurrentDomain.SetupInformation.ApplicationBase:C:\Users\Lenovo\Desktop\QRCode\QRCode\bin\Debug\
6.System.Windows.Forms.Application.StartupPath:C:\Users\Lenovo\Desktop\QRCode\QRCode\bin\Debug
7.System.Windows.Forms.Application.ExecutablePath:C:\Users\Lenovo\Desktop\QRCode\QRCode\bin\Debug\QRCode.EXE
