private async Task <FetchRowsResult> FetchRows(int page, CancellationToken cancellationToken)
{
try
{
CancellationToken linkedToken = BackgroundOperation.Register(this, cancellationToken);
if (page == 1)
{
await Task.Delay(500);
}
List <T> result = await RunAsync(() => FetchPage.Invoke(page, linkedToken));
PageCount = result.Capacity;
PageSource.UpdateSummaries();
return(new FetchRowsResult(result.Cast <object>().ToArray()));
}
catch (TaskCanceledException)
{
return(new FetchRowsResult(new object[] { }));
}
finally
{
BackgroundOperation.UnRegister(this);
}
}
private void linkLabel3_LinkClicked(object sender, LinkLabelLinkClickedEventArgs e)
{
var recordPage = new FetchPage(repository);
this.Hide();
recordPage.Show();
}
/// <summary>
/// Constructor.
/// </summary>
/// <param name="maxNumItems">max number of items</param>
/// <param name="fetchPageDelegate">the delegate that fetches a page</param>
public PageFetcher(BigInteger maxNumItems, FetchPage fetchPageDelegate)
{
MaxNumItems = maxNumItems;
this.fetchPageDelegate = fetchPageDelegate;
}
public PageFetcher(long maxNumItems, FetchPage fetchPageDelegate)
{
MaxNumItems = maxNumItems;
this.fetchPageDelegate = fetchPageDelegate;
}
