[Solved] Question about the treeview example

[carlg]

I'm trying to understand the treeview example that Telerik provides.  I am looking at the "Binding to Model" example.  In the example, there are categories and there are products under each category.  Is the example dependent upon the fact that there is a foreign key relationship between the category and the product? 

I guess what I'm really asking is: "Is the Telerik code somewhere behind the scenes using a foreign key relationship to build the trees?"

Thanks for the help

[Atanas Korchev]

Hi NewUser,

No, the treeview is not relying on a foreign key. It relies on a property which returns the children of the designated object.

Regards,
Atanas Korchev
the Telerik team

[carlg]

Thanks for the quick reply.

I'm still trying to figure out how I can use this control when all of the items in the treeview are coming from the same database table or class and we don't know at runtime how many levels deep the treeview will be.

For example our data looks as follows (all in the same table)

id        parentid        name

1                               Top level
2             1                 2nd level
3             1                 Another 2nd level item
4             2                 3rd level item


So in this example there are 3 tree levels, but more tree levels can be added by adding more rows to the db.

Thanks

[Atanas Korchev]

Hi NewUser,

The drag and drop example shows binding to a similar database table (Employees from Northwind).

Kind regards,
Atanas Korchev
the Telerik team

[carlg]

This is a great example.  I think it is what I am looking for.
Do you know how I can see the class definitions for the Employee class and the GetRootEmployees method?

Thanks again!

[Atanas Korchev]

Hello NewUser,

Those are all provided in the sample application. I suggest  you download it and check it out in visual studio.

All the best,
Atanas Korchev
the Telerik team