如何使用WPF背景工作者

1. 使用添加

   using System.ComponentModel;

2. 声明背景工作者：

   private readonly BackgroundWorker worker = new BackgroundWorker();

3. 订阅事件：

   worker.DoWork += worker_DoWork;
   worker.RunWorkerCompleted += worker_RunWorkerCompleted;
   

4. 实现两种方法：

   private void worker_DoWork(object sender, DoWorkEventArgs e)
   {
   // run all background tasks here
   }
   
   

   private void worker_RunWorkerCompleted(object sender,
   RunWorkerCompletedEventArgs e)
   {
   //update ui once worker complete his work
   }

5. 每当需要时，异步运行worker。

   worker.RunWorkerAsync();

6. 跟踪进度（可选，但通常很有用）

一）订阅

ProgressChanged

ReportProgress(Int32)

DoWork

b）设置

worker.WorkerReportsProgress = true;