如何从Winforms按钮单击事件中调用异步方法? [英] How do i call an async method from a winforms button click event?

问题描述

我有一个要异步运行的I/O绑定方法.

I have an I/O bound method that I want to run asynchronously.

在帮助文档中，它提到我应该使用异步并等待没有Task.Run

In the help docs it mentions that I should use async and await without Task.Run

引用

对于绑定到I/O的代码，您等待操作返回Task或异步方法中的任务.

For I/O-bound code, you await an operation which returns a Task or Task inside of an async method.

如何通过winforms按钮单击事件来做到这一点?

How do I do this from a winforms button click event?

我尝试过

private void button_Click(object sender, EventArgs e)
{ 
      await doLoadJob();
}

private async Task<int> doLoadJob()
{
    await loadJob();   
    return 0;
}

推荐答案

您的 button_Click 方法必须是 async .在 private 和 void 之间放置一个 async .

Your button_Click method needs to be async. Place a async between private and void.

private async void button_Click(object sender, EventArgs e)
{ 
     await LongOperation();
}

这篇关于如何从Winforms按钮单击事件中调用异步方法?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！