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

@namespace AntDesign
@inherits AntInputComponentBase<string>

<div class="ant-select ant-select-auto-complete ant-select-single ant-select-show-search @Class" style="@(string.IsNullOrWhiteSpace(Style) ? "width:200px" : Style)">
    <div class="ant-select-selector" style="@(CustomInput != null ? "border:0;" : string.Empty)">
        <span class="ant-select-selection-search" style="@(CustomInput != null ? "left:0;right:0;" : string.Empty)">
            @if (CustomInput == null)
            {
                <input autocomplete="off" class="ant-select-selection-search-input"
                       @onfocus="OnInputFocus" @onblur="OnInputBlur" @oninput="OnInputChange" @onkeydown="OnKeyDown"
                       role="combobox" aria-haspopup="listbox" aria-owns="rc_select_1_list" aria-autocomplete="list"
                       aria-controls="rc_select_1_list" aria-activedescendant="rc_select_1_list_0"
                       value="@Value" aria-expanded="false">
            }
            else
            {
                @CustomInput
            }
        </span>
        @if (string.IsNullOrWhiteSpace(Value))
        {
            <span class="ant-select-selection-placeholder">@PlaceHolder</span>
        }
    </div>
</div>

@if (ToggleState && _options != null && _options.Count > 0)
{
    <div style="position: absolute; top: 0px; left: 0px; width: 100%;" @onmouseover="OnOptionsMouseOver" @onmouseout="OnOptionsMouseOut">
        <div>
            <div class="ant-select-dropdown ant-select-dropdown-placement-bottomLeft @(ToggleState ? string.Empty : "ant-select-dropdown-hidden")" style="min-width: 200px; width: 200px; left: 25px; top: 78px;">
                <div>
                    <div role="listbox" id="rc_select_1_list" style="height: 0px; width: 0px; overflow: hidden;">
                        <div role="option" id="rc_select_1_list_0" aria-selected="true">@Value</div>
                        @*<div role="option" id="rc_select_1_list_1" aria-selected="false">sfsf</div>*@
                    </div>
                    <div class="" style="max-height: 256px; overflow-y: auto; overflow-anchor: none;">
                        <div>
                            <div class="" style="display: flex; flex-direction: column;">
                                @foreach (string option in _options)
                                {
                                    if (!string.IsNullOrWhiteSpace(option))
                                    {
                                        string activeClass = "ant-select-item-option-active";
                                        string selectedClass = "ant-select-item-option-selected";
                                        bool isSelected = option == Value;
                                        <div aria-selected="@isSelected" class="ant-select-item ant-select-item-option @(isSelected ? selectedClass : string.Empty) @(option == _activeOption ? activeClass : string.Empty)"
                                             @onclick="@(e => OnOptionClick(option))" @onmouseover="@(e => OnOptionMouseOver(option))">
                                            <div class="ant-select-item-option-content">@option</div>
                                            <span class="ant-select-item-option-state" unselectable="on" aria-hidden="true" style="user-select: none;"></span>
                                        </div>
                                    }
                                }
                            </div>
                        </div>
                    </div>
                </div>
            </div>
        </div>
    </div>
}