DxDropDown.IsOpenChanged Event

Fires when the DropDown opens or closes.

Namespace: DevExpress.Blazor

Assembly: DevExpress.Blazor.v24.2.dll

NuGet Package: DevExpress.Blazor

Declaration

[Parameter]
public EventCallback<bool> IsOpenChanged { get; set; }

Parameters

Type	Description
Boolean	A new value of the IsOpen property.

Remarks

The IsOpenChanged event occurs when the IsOpen property value is changed. For instance, it fires when a user closes the window or you call the ShowAsync and CloseAsync methods.

<DxButton Id="show-dropdown" Click="() => IsOpen = !IsOpen">Show a drop-down window</DxButton>
<DxDropDown IsOpen="@IsOpen" IsOpenChanged="OnIsOpenChanged" PositionTarget="#show-dropdown"
            Width="400" BodyText="Lorem ipsum dolor sit amet.">
</DxDropDown>

@code {
    bool IsOpen { get; set; } = false;
    async Task OnIsOpenChanged (bool isOpen) {
      // your code
    }
}