Oct 01, 2019 03:26 AM|Yongqing Yu|LINK
According to your description, do you want to achieve
cascading function between two dropdownlists?
If so,you can refer to this link for your reference:
Cascading Dropdownlist using Ajax in Asp.Net Mvc 4
This example is how to realize the cascade relationship between multiple dropdownlists in mvc.
By modifying the selection of the first dropdownlist, the data source of the second dropdownlist changes accordingly.