VRSystem/tmptestproject/BlazorWeb1/Components/Pages/Child.razor


@* 子组件：DisplayMessage.razor *@
<p>child2 @Message @NickName</p>
<Child3></Child3>

@code {
    [Parameter]
    public string Message { get; set; } = "默认消息";

    [CascadingParameter]
    public string NickName { get; set; }
}