ItemsSourceView.KeyFromIndex(Int32) Method

Reference

Definition

Namespace:: Microsoft.UI.Xaml.Controls

Important

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Retrieves the unique identifier (key) for the item at the specified index.

This documentation applies to WinUI 2 for UWP (for WinUI in the Windows App SDK, see the Windows App SDK namespaces).

public:
 virtual Platform::String ^ KeyFromIndex(int index) = KeyFromIndex;

winrt::hstring KeyFromIndex(int const& index);

public string KeyFromIndex(int index);

Public Function KeyFromIndex (index As Integer) As String

Parameters

index: Int32
int

The index of the item to get the key for.

Returns

String

Platform::String

winrt::hstring

The unique identifier (key) for the item at the specified index.

Remarks

Check that the HasKeyIndexMapping property is true before calling this method. If the data source does not support unique IDs (key values), this method causes a NotImplementedException.

Use the Count property to make sure you are passing a valid index.

Applies to