Iterate over a tree and get items in C#

Grasshopper
1

Hi all,

i have a tree and try to get the items how could i get it inside a loop.
These items will be inserted ito excel cells.
Hard time for me as a python nub to understand the TYPE of the tree item.

Unbenannt

for (int i = 1 ; i <= 1 ; i++)
    {
      for (int r =   ; r <= 12 ; r++)
      {
       myItem = Table.Branch(i)[r]  // how i get the item 
      }
    }

Thanks for help