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While loading the data source and assign the value in the OnInitializedAsync, then value is not displayed

While loading the data source and assign the value in the OnInitializedAsync, then value is not displayed in the component.


Sample Link: https://www.syncfusion.com/downloads/support/directtrac/general/ze/MultiSelect_OninitilizedAsync838718201


<SfMultiSelect TValue="int[]" TItem="Countries" @bind-Value="val" Mode="@VisualMode.CheckBox" Placeholder="All Dealer(s) and All Location(s)..." DataSource="@DataSource" ShowSelectAll="true" Width="20em" EnableSelectionOrder="true" FilterBarPlaceholder="Search Dealers and Locations" EnableGroupCheckBox="true" ShowDropDownIcon="true" PopupHeight="500px" CssClass="field">


    <MultiSelectEvents TValue="int[]" TItem="Countries" ValueChange="@((args) => DealerLocationDropDownChanged(args, "msDealersandLocations"))"></MultiSelectEvents>


    <MultiSelectFieldSettings GroupBy="Dealername" Value="Code" Text="Name"></MultiSelectFieldSettings>


</SfMultiSelect>

@code {



    public int[] val { get; set; }


    public CountryService DataService;

    public List<Countries> DataSource = new List<Countries>();

        protected override async Task OnInitializedAsync()

    {

        DataSource = await ownservice.GetDataAsync();

        this.val = await ownservice.GetPreSelectDataAsync();

    }

    public void DealerLocationDropDownChanged(MultiSelectChangeEventArgs<int[]> args, string name)

    {


    }

}