Question

I have an organization chart tree structure stored in a database.
Is is something like

ID (int);
Name (String);
ParentID (int)

In C# it is represented by a class like

class Employee
{
int ID, 
string Name, 
IList < Employee> Subs
} 

I am wondering how is the best way to retrieve these values from the database to fill up the C# Objects using LINQ (I am using Entity Framework)

There must be something better than making a call to get the top level then making repeated calls to get subs and so on.

How best to do it?

Answer 1

I’d add a field to the entity to include the parent ID, then I’d pull the whole table into memory leaving the List subs null. Id then iterate through the objects and populate the list using linq to objects. Only one DB query so should be reasonable.