[C#]Thread与委托实现定时刷新数据功能

用户需求：定时抓取ERP系统条码已扫描未审核单据

bool bStop;
public DataTable dt = new DataTable();
public ScanedNotChecked_Frm()
{
InitializeComponent();
}

private void ScanedNotChecked_Frm_Load(object sender, EventArgs e)
{
//定义线程
Thread LogThread = new Thread(new ThreadStart(DoService));
//设置线程为后台线程,那样进程里就不会有未关闭的程序了
LogThread.IsBackground = true;
bStop = true;
if (bStop == true)
{
Control.PageControl.CheckForIllegalCrossThreadCalls = false;
LogThread.Start();//起线程

}
}
private string  GetList()
{
SqlParameter[] parms = new SqlParameter[0];
DBCon db = new DBCon("ZM");
gdScanedNotChecked.DataSource = SqlHelper.ExecuteDataset(db.StringConnection(), CommandType.StoredProcedure, "DZ_ScanedNotChecked", parms).Tables[0];

return "重载";
}
int i = 0;
private void DoService()
{
while (true)
{
bStop = false;
//别的线程里的调用哇~
i++;
lblMessage.Text = "第" + i.ToString() + "次" + returnList(returnMylist) + "数据";
System.Threading.Thread.Sleep(1000*60*5);
}
}
private delegate string returnStrDelegate();
//搞个最简单滴取值滴方法~
private string returnMylist()
{
return GetList();
}

//判断一下是不是该用Invoke滴~，不是就直接返回~
private string returnList(returnStrDelegate myDelegate)
{
if (this.InvokeRequired)
{
return (string)this.Invoke(myDelegate);
}
else
{
return myDelegate();
}
}