Question

can anyone tell me how to create a list in one class and access it from another?

Answer 1

public class MyClass {

    private List<string> myList = new List<string>();

    public List<string> GetList()
    {
        return myList;
    }
} 

You can have any anything there instead of string.
Now you can make an object of MyClass and can access the public method where you have implemented to return myList.

public class CallingClass {

    MyClass myClass = new MyClass();

    public void GetList()
    {
        List<string> calledList = myClass.GetList();
        ///More code here...
    }
}