I had a list of categories from Amazon which were stored in a csv like this (semicolon separated 25234 entries):
Main Category;Subcat 1;Subcat 2;Subcat 3;Subcat 4;Subcat 5;Subcat 6;Subcat 7;Subcat 8
The tree-table is a combination of the tree and the data-table.
To create the tree-table, one needs to add the columns they will need, then indicate which column should feature the tree structure and then add data to it.
To create columns we use the WixDataColumn class we saw for the...