What is Virtualization?
Virtualization is the process of creating only the visible parts of a user interface (UI) while dynamically loading and unloading other parts as needed. For example, when displaying a long list, virtualization ensures that only the items currently visible in the viewport are rendered. As the user scrolls, new items are rendered, and items that go out of view are removed from the DOM.
Benefits of Virtualization
- Improved Performance: Reduces the number of DOM elements, making the application faster.
- Lower Memory Usage: Only visible items consume memory, which reduces resource usage.
- Smoother Scrolling: Optimized rendering ensures seamless scrolling, even with thousands of items.
Virtualization in Blazor
Blazor provides the <Virtualize> component to implement virtualization out of the box. This component dynamically renders the visible part of a list and handles the addition or removal of items as the user scrolls.
Basic Usage of <Virtualize>
Here is an example of using the <Virtualize> component to display a large list of items.