从子组件传回到父组件
子组件ChildComponent:
@code{
[Parameter]
public EventCallback<int> I { get; set; }
private void SendBack()
{
I.InvokeAsync(3);//等待某个事件触发SendBack,就把3传回了父组件的x
}
}
父组件:
<ChildComponent I = "HandleRecievedInt">
</ChildComponent>
@code{
private void HandleRecievedInt(int x)
{
}