- Recently added/updated
- Data Grid
- Grid Columns
- Grid Options
- Data Sources
- Master-Detail Views
- Data Input Forms
- Editors
- Data Filtering
- Sorting
- Partitioning
- Exporting & Printing
- Image Management
- Charts
- Many-to-Many Relations
- Fine-tuning & Tweaking
- Emailing
- Calculated Columns
- Custom Templates
Editors.Dynamic Cascading Combobox
Dynamic Cascading Combobox editor consists of a number of two or more dependent Dynamic Combobox editors (its levels). The drop-down list of each of these editors is filtered by the value of the previous editor.
This control should be used when you have a normalized schema and nested master-detail relationship (two nesting levels at least). As opposed to this example where we had to write some code to implement dependent lookup controls, the Dynamic Cascading Combobox editor makes the same work automatically.
Table structures and relationships
Key properties:
- Minimum input length
- Specifies number of characters necessary to start the search in each of levels (set to 2 for the City 1 column).
- Formatting functions
- Allows to render the current selection and search results in each of levels (see an example here).
- Filter condition
- Allows to apply filter to each of levels (set to Continent = 'Europe' for the Country level of the City 2 column).
| Actions | City 1 | City 2 | |
|---|---|---|---|
|
|
Portland (United States) | Bologna (Italy) | |
|
|
Chicago (United States) | Warszawa (Poland) | |
|
|
Paderborn (Germany) | Le Mans (France) |