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ASP.NET Core DropDownList Cascading DropDownLists
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HtmlHelper
TagHelper
cascadingdropdownlist.cshtml
CascadingDropDownListController.cs
CascadingDropDownList_TagHelper.cshtml
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CLIENT-SIDE API HTML HELPER APIDescription
The cascading functionality is enabled after defining the CascadeFrom property, pointing to the Name of the parent DropDownList.
This example demonstrates the cascading Telerik UI for ASP.NET Core DropDownList functionality. It displays three DropDownLists, where each one is enabled and filtered based on the value chosen in the previous DropDownList.
During initialization of the cascading functionality, the child DropDownList will:
- Check if the CascadeFrom is defined, if not – cascading will not be enabled
- Try to find the parent object
- Listen for changes in the parent value
- Be disabled if the parent has no value
Additional Apps
This DropDownList example is part of unique collection of hundreds of ASP.NET Core demos, with which you can see all Telerik ASP.NET Core components and their features in action. View the source code of the demos from the library or directly adapt, and edit them and their theme appearance in Telerik REPL for ASP.NET Core or ThemeBuilder.