<div class="rz-p-12 rz-text-align-center">
    <RadzenCheckBoxList Value=@values TValue="int" Change=@(args => values = args)>
        <Items>
            <RadzenCheckBoxListItem Text="Orders" Value="1" />
            <RadzenCheckBoxListItem Text="Employees" Value="2" />
            <RadzenCheckBoxListItem Text="Customers" Value="3" />
        </Items>
    </RadzenCheckBoxList>
</div>

@code {
    IEnumerable<int> values = new int[] { 1 };
}