Read a file from child project bin folder to parent project

Question

i have two projects in one solution:

 : (Solution)Myapplication 
    : project 1 
       ReadMsgtxt.cs      
    : project 2           
       bin             
         debug                
           Msg.txt

now i want to read "Msg.txt" file from "ReadMsgtxt.cs". Main parent project is "project1" but i want read file from parent project to child project. I don't want hardcode the path. please suggest using c# code to retrieve the file

Now i an using this code in ReadMsgtxt.cs but it is taking current file path i.e., project1 path

 

System.IO.File.ReadAllText(AppDomain.CurrentDomain.BaseDirectory + "\\Msg.txt")