Blazor ComboBox Example - Cascading ComboBoxes
This example demonstrates the cascading functionalities of the ComboBox. Choose a country from countries ComboBox, then respective states will be loaded in the second ComboBox.
The Cascading ComboBox is the series of ComboBox, where the value of one ComboBox depends on the another ComboBox value. In the ValueChange event handler of 1st ComboBox, you should load the data for the 2nd ComboBox based on the selected value of 1st ComboBox. The same has to be configured between 2nd and 3rd ComboBoxes.
In this sample, if a country is selected from countries ComboBox, the respective states are loaded in the second ComboBox and in the same way states and cities ComboBox works.