LightSwitch dynamic cascading dropdown lists

Question

In lightswitch, I need to make dynamic cascading dropdown lists based on a recursive relationship:

Table "Categories" includes:

1. Id

2. Name

3. ParentId

here is the desired scenario:

1. a screen showing a drop down list for the categories with no parent (ParentId = Null).
2. once user selects a specific category, another drop down to be created which includes the selected category children.
3. User can select another child category, and show another dynamic dropdown, and so on till we have categories drop down with no children.

Thanks & I really appreciate your help with this.

Answer 1

I miss also tree controls in lightswitch, for this reason, I have developed my own:

• LightSwitch Custom Control: Tree CRUD Operations

• LightSwitch Custom Control: Tree lookup Operations

Be free to get source code and video samples from this links.

Here my control playing with a 2,4Millions nodes tree