C＃异步Web服务

Question

有人可以给我一个如何使用方法开始向用户显示警报的例子说加载... 随着下面的代码我使用Completed事件放置查询，使用方法作为开始？

service.EventosDoDiaCompleted += RecebeEventos; 
service.EventosDoDiaAsync(); 

private void RecebeEventos(object sender, AsyncCompletedEventArgs e) 
{ 
    Dataset ds = service.EventosDoDia(); 
} 

Answer 1

只要将简单的文本块或者是这样的：

service.EventosDoDiaCompleted += RecebeEventos; 
    textblock.Text="Loading...."; 
    service.EventosDoDiaAsync(); 
    private void RecebeEventos(object sender, AsyncCompletedEventArgs e) 
    { 
     textblock.Text="Loaded"; 
     Dataset ds = service.EventosDoDia(); 
    }