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Vote

Need to provide support for Range selection with virtualization

Need to provide support for Range selection with virtualization and column virtualization.

Run the attached sample.
select the record from first row.
scroll down and press shift + rowselect. (for example: upto 30th Record)

Expectations: It should select all the 30 records. 
Current behavior: It is selecting only the records from current view.


@page "/"
@using Syncfusion.Blazor.Grids

<SfGrid DataSource="@Orders"  Width="300" Height="500" AllowSelection="true" EnableVirtualization="true" EnableColumnVirtualization="true">
    <GridSelectionSettings Type="SelectionType.Multiple"></GridSelectionSettings>
    <GridColumns>
        <GridColumn Type="ColumnType.CheckBox" Width="50"></GridColumn>
        <GridColumn Field=@nameof(Order.OrderID) HeaderText="Order ID" TextAlign="TextAlign.Right" Width="120"></GridColumn>
        <GridColumn Field=@nameof(Order.CustomerID) HeaderText="Customer Name" Width="150"></GridColumn>
        <GridColumn Field=@nameof(Order.OrderDate) HeaderText=" Order Date" Format="d" Type="ColumnType.Date" TextAlign="TextAlign.Right" Width="130"></GridColumn>
        <GridColumn Field=@nameof(Order.Freight) HeaderText="Freight" Format="C2" TextAlign="TextAlign.Right" Width="120"></GridColumn>
    </GridColumns>
</SfGrid>

@code {
    public List<Order> Orders { get; set; }

    protected override void OnInitialized()
    {
        Orders = Enumerable.Range(1, 750).Select(x => new Order()
            {
                OrderID = 1000 + x,
                CustomerID = (new string[] { "ALFKI", "ANANTR", "ANTON", "BLONP", "BOLID" })[new Random().Next(5)],
                Freight = 2.1 * x,
                OrderDate = DateTime.Now.AddDays(-x),
            }).ToList();
    }

    public class Order
    {
        public int? OrderID { get; set; }
        public string CustomerID { get; set; }
        public DateTime? OrderDate { get; set; }
        public double? Freight { get; set; }
    }
}