Merge pull request #7198 from syncfusion-content/994654-PersistSelNote

994654: Added Persist Selection Note

Author: VigneshNatarajan27

blazor/datagrid/selection.md

@@ -726,4 +726,6 @@ public class OrderDetails
 {% endhighlight %}
 {% endtabs %}
 
-{% previewsample "https://blazorplayground.syncfusion.com/embed/LXLejIZoMcsYDjdk?appbar=false&editor=false&result=true&errorlist=false&theme=bootstrap5" %}
+{% previewsample "https://blazorplayground.syncfusion.com/embed/LXLejIZoMcsYDjdk?appbar=false&editor=false&result=true&errorlist=false&theme=bootstrap5" %}
+
+> When **Select All** is used, only records visible in the current view are selected. The **SelectedRecords** property shows the count for the current page. As navigation continues to other pages, new records load on demand, and **SelectedRecords** includes selections from each visited page. This design ensures efficient data retrieval with paging. Selecting all records across the entire dataset and retrieving them at once is not supported when **Select All** is enabled.