C # How to obtain the application program running path

For. net. There are several ways to get the applicationProgramPath.

1. server. mappath
2. system. Windows. Forms. startuppath
3. type. Assembly. Location

Method 2 can be applied to console applications, winform applications, Windows Services, method 1 can be applied to Web applications, and method 3 can be applied.
But method 3 is the path to load the application. For a web application, the obtained path is the c: \ windows \ Microsoft. NET \ framework \ v1.1.4322 \ temporary ASP. NET Files directory. Therefore, we recommend that you use server. mappath for web projects. Otherwise, method 2 is recommended. If you create a new class library. You can add a reference to system. Windows. Forms. startuppath for use.