public async void StartUpdate()
{
try
{
var taskCount = 3;
var groups = NeedUpdateCatalogs.Split <BookCatalog>(taskCount);
var enumerable = groups as IEnumerable <BookCatalog>[] ?? groups.ToArray();
if (groups == null || !enumerable.Any())
{
return;
}
IsUpdating = true;
var tasks = new Task[enumerable.Length];
for (var i = 0; i < enumerable.Length; i++)
{
if (IsDeleted)
{
break;
}
tasks[i] = await Task.Factory.StartNew(async() =>
{
var catalogs = enumerable[i];
foreach (var bookCatalog in catalogs)
{
try
{
if (IsDeleted)
{
break;
}
bookCatalog.CatalogContent =
await AnalisysSourceHelper.GetCatalogContent(bookCatalog.CatalogUrl);
}
catch (Exception e)
{
Console.WriteLine(e);
}
finally
{
lock (_obj)
{
DispatcherHelper.CheckBeginInvokeOnUI(() =>
{
NeedUpdateCount = (int.Parse(NeedUpdateCount) - 1).ToString();
});
}
}
}
});
}
await Task.Factory.ContinueWhenAll(tasks, (obj) =>
{
DbHelper.AddDbOperator(new Action(() =>
{
var reslut = DbLocalBook.InsertOrUpdateBookCatalogs(AppDataPath.GetLocalBookDbPath(),
NeedUpdateCatalogs);
}));
DispatcherHelper.CheckBeginInvokeOnUI(() =>
{
NeedUpdateCount = "";
});
});
}
catch (Exception e)
{
Console.WriteLine(e);
}
finally
{
IsUpdating = false;
}
}