Background and Motivation

The <Virtualize TItem="T"> component should allow users to pass a IReadOnlyCollection<T> to the Items property/parameter instead of requiring an ICollection.

There should be no need for the Virtualize component to change the collection passed to it, so changing the parameter to an IReadOnlyCollection<T> should be a non-breaking change, that allows users to pass a wider range of collection types (including custom ones) to the Virtualize component.

Proposed API change to Virtualize.cs

/// <summary>
/// Gets or sets the fixed item source.
/// </summary>
[Parameter]
-public ICollection<TItem>? Items { get; set; }
+public IReadOnlyCollection<TItem>? Items { get; set; }

Usage Examples

N/A

Alternative Designs

N/A

Risks

There should be no breaking changes (ICollection implements IReadOnlyCollection), and performance should be the same.