Question

I have a basic category object that has also subcategories in it. This is a simplified version of my object structure:

Category

int Id

string CategoryName

string Path

Category ParentCategory

List<Category> SubCategories

---

Computer
     --> Accessories
                 --> Keyboard
                 --> Mouse
     --> Storage
             --> Flash
             --> Micro

How can I write a function that creates a path for all the categories?

By path, I mean:

For Keyboard: Computer/Accessories/Keyboard

For Accessories: Computer/Accessories

For Computer: Computer

Answer 1

Something like this should work:

public String getPath(Category cat)
{
    if (cat.ParentCategory == null) return cat.CategoryName;
    return getPath(cat.ParentCategory) + "/" + cat.CategoryName;
}