ant-design-blazor/components/auto-complete/AutoComplete.razor

@namespace AntDesign
@inherits AntInputComponentBase<string>
@typeparam TOption
@using AntDesign.Internal

<CascadingValue Value='$"ant-select-dropdown"' Name="PrefixCls">
    <OverlayTrigger @ref="_overlayTrigger"
                    Style="display: inline"
                    IsButton="@true"
                    Disabled="false"
                    Trigger="new TriggerType[] { TriggerType.Click }"
                    PopupContainerSelector="@PopupContainerSelector"
                    OverlayEnterCls="slide-up-enter slide-up-enter-active slide-up"
                    OverlayLeaveCls="slide-up-leave slide-up-leave-active slide-up"
                    OverlayClassName="@OverlayClassName"
                    OverlayStyle="@OverlayStyle"
                    OnVisibleChange="@OnOverlayTriggerVisibleChange">
        <Overlay>
            <CascadingValue Value="this" IsFixed="@true">
                @if (ShowPanel && !_isOptionsZero)
                {
                    <div style="max-height: 256px; overflow-y: auto; overflow-anchor: none; @_minWidth">
                        <div style="display: flex;flex-direction: column;">

                            @if (OverlayTemplate != null)
                            {
                                @OverlayTemplate
                            }
                            else
                            {
                                @if (OptionTemplate != null)
                                {
                                    @foreach (var option in GetOptionItems())
                                    {
                                        @OptionTemplate(option)
                                    }
                                }
                                else
                                {
                                    @foreach (var option in GetOptionItems())
                                    {
                                        var label = OptionFormat == null ? option.Label : OptionFormat(option);
                                        <AutoCompleteOption Value="@option.Value" Label="@option.Label" Disabled="option.IsDisabled">
                                            @label
                                        </AutoCompleteOption>
                                    }
                                }
                            }
                        </div>
                    </div>
                }
            </CascadingValue>
        </Overlay>
        <Unbound>
            <CascadingValue Value="this" IsFixed="@true">
                @if (ChildContent == null)
                {
                    <AutoCompleteInput RefBack="context" @bind-Value="@CurrentValue" Placeholder="@Placeholder" Disabled="@Disabled" Style="@Style" Id="@Id" />
                }
                else
                {
                    <CascadingValue Value="context" Name="OverlayTriggerContext">
                        @ChildContent
                    </CascadingValue>
                }                    
            </CascadingValue>
        </Unbound>
    </OverlayTrigger>
</CascadingValue>