c# - How to get the current file path and know if the file is saved -

I am making a simple text editor in the net. I need to know two things about working:

1. I have to know the complete path of the current working file in the editor
2. I need to signal to the user To save the file if it is not already saved (of course)

   Please do the above implementation thanks! Look in the class that will let you know how to choose a file from your file system.

   This is where you can start.

   Saving the file is easy, you can view using the file; For example, start classes and then come back here for further questions, which will be mandatory.

   Good luck.