Blazor子组件传递数据到父组件

?

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29

@page "/counter"   <PageTitle>Counter</PageTitle> <SubComponnent test="returnDatas"></SubComponnent>   <h1>Counter</h1>   <p role="status">Current count: @currentCount</p>   <button class="btn btn-primary" @onclick="IncrementCount">Click me</button>   @code {     private int currentCount = 0;       private void IncrementCount()     {         currentCount++;     }         private void returnDatas(string test){           var x = test;         }     }

　　

?

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20

<h3>SubComponnent</h3>       <button @onclick="aaaa">test</button>     @code {         [Parameter]     public EventCallback<string> test { get; set; }         private async void aaaa()     {         await test.InvokeAsync("hahahaha");       } }