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ASP.NET Core DropDownTree Local Data Binding
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HtmlHelper
TagHelper
local_data_binding.cshtml
Local_Data_Binding.cs
Local_Data_Binding_TagHelperController.cs
CategoryItem.cs
SubCategoryItem.cs
Local_Data_Binding_TagHelper.cshtml
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CLIENT-SIDE API HTML HELPER APIDescription
Apart from declaratively defining the DropDownTree items within the helper configuration, the component supports local (on the server) and remote (using a DataSource configuration object) data binding. Binding the DropDownTree locally on the server can be implemented by passing the data collection to the BindTo()
method.
The current example demonstrates two approaches for binding the DropDownTree to local data:
- (Default) Using inline data—An
IEnumerable
ofDropDownTreeItemModel
is stored in aViewBag
and passed to theBindTo()
method. TheDropDownTreeItemModel
has anItems
field that holds the child nodes (it is aList
property). If a given node has items, the Expand icon will be visible. - Mapping
Model
properties—AnIEnumerable
of a specified Model, for example, CategoryItem, is stored in aViewBag
and passed to another overload of theBindTo()
method: the first argument is anIEnumerable
of aModel
, and the second is the action, which creates a hierarchy of items by using the specified mappings. For example, the child nodes will be bound to the SubCategories property, and theCategoryItem
Model
properties will be mapped toDropDownTreeItem
properties.
Additional Apps
This DropDownTree 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.