ant-design-blazor/components/collapse/Panel.razor

@namespace AntDesign
@inherits AntDomComponentBase

<div class="@ClassMapper.Class" style="@Style" id="@Id">
    <div class="ant-collapse-header" @onclick="OnClickHeader">
        @if (ShowArrow)
        {
            @if (Collapse.ExpandIcon.IsT0 && Collapse.ExpandIcon.AsT0)
            {
                <Icon Type="right" Theme="outline" Class="ant-collapse-arrow" Rotate="@(Active ? 90 : 0)" />
            }
            else if (Collapse.ExpandIcon.AsT1 != null)
            {
                @Collapse.ExpandIcon.AsT1(Active)
            }
        }

        @if (Header.IsT0)
        {
            @Header.AsT0
        }
        else
        {
            @Header.AsT1
        }

        @if (Extra.Value != null)
        {
            <div class="ant-collapse-extra">
                @if (Extra.IsT0)
                {
                    @Extra.AsT0
                }
                else
                {
                    @Extra.AsT1
                }
            </div>
        }
    </div>
    <div class="ant-collapse-content @(Active?"":"ant-collapse-content-inactive")">
        <div class="ant-collapse-content-box">
            @ChildContent
        </div>
    </div>
</div>