使用异步 c# 时，“任务 Home.HomeButton_ClickAsync 的返回类型错误”

Question

代码：    private async Task HomeMoreButton_ClickAsync(object sender, EventArgs e)    {        InfoLabel_YearOfRelease.Show();        using (var httpClient = new HttpClient())        {            var Json = await httpClient.GetStringAsync("http://www.omdbapi.com/?apikey=......=" + InfoNameOfShow.Text             + "&type=" + InfoTypeOfShow.Text.ToLower());            var ShowsExtendedInfo = new JavaScriptSerializer().Deserialize<ShowsExtendedInfo>(Json);            InfoLabel_YearOfRelease.Text = ShowsExtendedInfo.Year;        }    }错误：CS0407 'Task Home.HomeMoreButton_ClickAsync(object, EventArgs)' 的返回类型错误在线的：this.HomeMoreButton.Click += new System.EventHandler( this.HomeMoreButton_ClickAsync );我已经四处走动，但从来没有遇到过这个错误，也找不到任何在线帮助我解决这个问题的东西。

Answer 1

async void 必须查看事件处理程序。