protected override async Task DoDownloadingAsync(string ncode)
{
var delay = GetRandomDelay(10);
await Task.Delay(delay);
var b = new MoqBookmarkInfo(ncode);
this.Add(b);
}
protected override async Task DoLoadingAsync()
{
var delay = GetRandomDelay(2);
await Task.Delay(delay);
var b1 = new MoqBookmarkInfo("111");
this.Add(b1);
delay = GetRandomDelay(2);
await Task.Delay(delay);
var b2 = new MoqBookmarkInfo("222");
this.Add(b2);
}