IHierarchyData Interface
Exposes a node of a hierarchical data structure, including the node object and some properties that describe characteristics of the node. Objects that implement the IHierarchyData interface can be contained in IHierarchicalEnumerable collections, and are used by ASP.NET site navigation and data source controls.
Assembly: System.Web (in System.Web.dll)
| Name | Description | |
|---|---|---|
 | HasChildren | Indicates whether the hierarchical data node that the IHierarchyData object represents has any child nodes. |
| Item | Gets the hierarchical data node that the IHierarchyData object represents. |
| Path | Gets the hierarchical path of the node. |
| Type |
| Name | Description | |
|---|---|---|
 | GetChildren() | Gets an enumeration object that represents all the child nodes of the current hierarchical node. |
| GetParent() | Gets an IHierarchyData object that represents the parent node of the current hierarchical node. |
The IHierarchyData interface is implemented by classes that represent nodes of a hierarchical structure, and track the hierarchical relationships to their parent and child nodes. Classes that implement the IHierarchyData interface can be contained in collections that implement the IHierarchicalEnumerable interface.
The following code example demonstrates how to implement the IHierarchyData interface with a class that wraps a FileSystemInfo object. The FileSystemInfo class is a good example of a hierarchical data node, which the IHierarchyData interface represents for ASP.NET hierarchical data source controls. This code example is part of a larger example provided for the HierarchicalDataSourceControl class.
The following code example demonstrates how to recursively iterate through an IHierarchicalEnumerable collection, extract the IHierarchyData item from the enumerator using the GetHierarchyData method, and perform basic work with the data item.
Available since 2.0