EnumerableExtensions.Flatten<T>(IEnumerable<T>, Func<T, IEnumerable<T>>) Method

Converts a hierarchical data structure into a flat collection. This method traverses the hierarchy defined by the getItems() function. The function accepts all hierarchy items and returns nested items as a flat collection.

Namespace : DevExpress.Maui.Mvvm

Assembly : DevExpress.Maui.Mvvm.dll

NuGet Package : DevExpress.Maui.Mvvm

Declaration

csharp

public static IEnumerable<T> Flatten<T>(
    this IEnumerable<T> source,
    Func<T, IEnumerable<T>> getItems
)

Parameters

Name	Type	Description
source	IEnumerable<T>

The source collection that contains the root items of the hierarchical data structure.

| | getItems | Func<T, IEnumerable<T>> |

The function that invokes for each item in the source collection and retrieves nested items.

Type Parameters

Name	Description
T

The type of items stored in the source collection.

Returns

Type	Description
IEnumerable<T>

The flat collection of items.