Reading data embedded into a .NET assembly

For a school project I'm not allowed to use stored procedures to store my SQL scripts.To solve this I tried to create a SQL_scripts folder inside my class assembly.

Now I'm stuck on how to read my script from a relative path?

Here what I tried without success:

var appDomain = System.AppDomain.CurrentDomain;
                var basePath = appDomain.RelativeSearchPath ?? appDomain.BaseDirectory;
                string path = Path.Combine(basePath, "SQL_scriptes", "GetAllEmptyRoomsAtDateRange.sql");
                string query = File.ReadAllText(path);

But I'm always in the following folder:

• MyProject\Tests\bin\Debug\SQL_scriptes\GetAllEmptyRoomsAtDateRange.sql

Any idea?