C# winfrom异步加载数据不影响窗体UI的操作方法

   private void backgroundWorker1_DoWork(object sender, DoWorkEventArgs e)
   {
       // 这里模拟一个耗时的数据加载操作，比如从数据库读取数据
       System.Threading.Thread.Sleep(5000);
       // 假设这里是真正从数据库获取数据的代码
       List<string> data = new List<string>();
       data.Add("Data 1");
       data.Add("Data 2");
       // 将加载的数据作为结果返回
       e.Result = data;
   }

   private void backgroundWorker1_RunWorkerCompleted(object sender, RunWorkerCompletedEventArgs e)
   {
       if (e.Error == null)
       {
           List<string> data = (List<string>)e.Result;
           // 假设dataGridView1是一个DataGridView控件，用于显示数据
           dataGridView1.DataSource = data;
       }
       else
       {
           // 处理错误情况，比如显示错误消息
           MessageBox.Show("数据加载出错：" + e.Error.Message);
       }
   }

   private void button1_Click(object sender, EventArgs e)
   {
       if (!backgroundWorker1.IsBusy)
       {
           backgroundWorker1.RunWorkerAsync();
       }
   }

   private async void button2_Click(object sender, EventArgs e)
   {
       // 假设LoadDataAsync是一个异步方法，用于加载数据
       List<string> data = await LoadDataAsync();
       dataGridView1.DataSource = data;
   }

   private async Task<List<string>> LoadDataAsync()
   {
       using (HttpClient client = new HttpClient())
       {
           HttpResponseMessage response = await client.GetAsync("https://example.com/api/data");
           if (response.IsSuccessStatusCode)
           {
               string json = await response.Content.ReadAsStringAsync();
               // 假设这里是将JSON数据反序列化为List<string>的代码
               return JsonConvert.Deserialize<List<string>>(json);
           }
           else
           {
               throw new Exception("数据加载失败");
           }
       }
   }