How to refresh data on chart after changed dropdown selected

[Adamszsz]

Hello how i can here change datasource after changed dropdown menu?

Example
`

<div class="card">
           <div class="card-body" style="position: relative;">
               <div class="d-flex align-items-center">
                   <div class="subheader">Zysk potencjalny (Dziś)</div>
                   <div class="ms-auto lh-1">
                       <Dropdown>
                           <ChildContent>
                               <a class="dropdown-toggle text-muted" aria-haspopup="true" aria-expanded="false">
                                   Last @days days
                               </a>
                           </ChildContent>
                           <DropdownTemplate>
                               <DropdownMenu>
                                   <DropdownItem>Last 7 Days</DropdownItem>
                                   <DropdownItem @onclick="OnSubmitNoteAsync">Last 30 days</DropdownItem>
                                   <DropdownItem>Last 90 days</DropdownItem>
                               </DropdownMenu>
                           </DropdownTemplate>

                       </Dropdown>
                   </div>
               </div>
               <div class="d-flex align-items-baseline">
                   <div class="h1 mb-3 me-2">@Convert.ToString(Pobranie_warotsci_zysk_potencjalny()) EUR</div>
                   <div class="me-auto">
                   </div>
               </div>
               <div style="max-width:200px">
                   <ApexChart TItem="Order"
                              Height="40"
                              XAxisType="XAxisType.Datetime"
                              Options="GetOptions()">

                       <ApexPointSeries TItem="Order"
                                        Items="SampleData.GetOrders(7)"
                                        Name="EUR"
                                        SeriesType="SeriesType.Bar"
                                        XValue="@(e => e.datazamowienia.Date.AddDays(1))"
                                        YAggregate="@(e => e.Sum(e => e.GrossValue))"
                                        OrderBy="e=>e.X" />
                   </ApexChart>
               </div>
           </div>
       </div>

`

and c# code

`
@code {
    private ApexCharts.ApexChartOptions<Order> GetOptions()
    {
        var options = new ApexCharts.ApexChartOptions<Order>();
        options.Colors = new List<string> { "#206bc4" };
        options.Chart = new Chart { Sparkline = new ChartSparkline { Enabled = true } };
        return options;
    }

    public static void ustaw_liczbe_dni(int liczbadni)
    {
        days = liczbadni;
    }

    protected async Task OnSubmitNoteAsync(MouseEventArgs mouseEventArgs)
    {
        days = 30;
`

Items="SampleData.GetOrders() it assign items into chart , and now in OnSubmitNoteAsync how can i reload this data?