backgroundworder 简单使用

//手动创建backgroundworker组件

///创建
private backgroundworker bgd = new backgroundworker();
///声明xmldoment
private xmldoment doment = null;
/// Load 加载事件
private void Form1_Load(object sender , EventArgs e)
{
/// 执行操作
this.bgd.DoWorker +=delegate(object obj,DoWorkerEventArgs dwe)
{
doment = new xmldoment();
doment.Load(@"地址.xml");
};
///执行完成后
this.bgd.RunWorkerCompleted +=delegate(object obj,RunWorkerCompletedEventArgs es)
{
if(doment!=null)
{Messagebox.show(doment.InnerXml,"Dowload Complete"}
else
messagebox.show("失败");
};

}

private void ButRun(object sender , EventArgs e)
{
this.bgd.RunWorkerAsync();//开始执行
this.ButRun.Enabled = false;
while(this.bgd.IsBusy)
{
Application.DoEvents();
}
this.ButRun.Enabled = true;
}