//异步写内存
private void backgroundWorker2_DoWork(object sender, DoWorkEventArgs e)
{
FunctionBag bag = (FunctionBag)(e.Argument);
bag.Rows = WriteItems(bag.Items, bag.Value);
e.Result = bag.Rows;
}
//异步读取内存
private void backgroundWorker1_DoWork(object sender, DoWorkEventArgs e)
{
FunctionBag bag = (FunctionBag)(e.Argument);
bag.Rows = ReadItems(bag.Items, bag.IsReload);
e.Result = bag.Rows;
}