winform 开发中 把耗时操作 封装起来 异步执行（.net 4.0）

 1     public class BackgroundTask
 2     {
 3         private static WaitDialogForm LoadingDlgForm = null;
 4 
 5         public static void BackgroundWork(Action<object> action, object obj)
 6         {
 7             using (BackgroundWorker bw = new BackgroundWorker())
 8             {
 9                 bw.RunWorkerCompleted += (s, e) => 
10                 { 
11                     LoadingDlgForm.Close(); 
12                     LoadingDlgForm.Dispose(); 
13                 };
14 
15                 bw.DoWork += (s, e) =>
16                 {
17                     try
18                     {
19                         Action<object> a = action;
20                         a.Invoke(obj);
21                     }
22                     catch { }
23                 };
24 
25                 bw.RunWorkerAsync();
26 
27                 LoadingDlgForm = new WaitDialogForm("正在加载中......", "信息提示");
28             }
29         }
30     }

        private void loadData()
        {
            BackgroundTask.BackgroundWork(getData, null);
        }

        private void getData(object obj)
        {
            //这里执行耗时操作 的代码 譬如，加载远程数据之类，还有绑定数据到UI，比如this.gridview.datasource = 之类的操作
        }