private async Task QueryByIntervalAsync()
{
var dateStart = DateTimeViewModelStart.ToDateTime();
var dateEnd = DateTimeViewModelEnd.ToDateTime();
if (!dateStart.HasValue || !dateEnd.HasValue)
{
PromptUser("Invalid date");
return;
}
if (dateEnd.Value <= dateStart.Value)
{
PromptUser("Datetime end should greater than datetime start.");
return;
}
if ((dateEnd.Value - dateStart.Value).TotalDays > 31)
{
PromptUser("Can not query more than 31 days");
return;
}
if (ProductType == ProductType.Mtm)
{
var output = await FaiCollectionHelper.SelectByIntervalAsync <FaiCollectionMtm>(ProductType,
NameConstants.SqlConnectionString, dateStart.Value, dateEnd.Value);
DatabaseBuffer.FaiCollectionBuffers = new List <IFaiCollection>(output);
}
else
{
var output = await FaiCollectionHelper.SelectByIntervalAsync <FaiCollectionAlps>(ProductType,
NameConstants.SqlConnectionString, dateStart.Value, dateEnd.Value);
DatabaseBuffer.FaiCollectionBuffers = new List <IFaiCollection>(output);
}
DatabaseBuffer.NavigateToPage(0);
// Activate related controls
CommandManager.InvalidateRequerySuggested();
}
private async Task DeleteSelection()
{
CurrentDialogType = DatabaseViewDialogType.WaitingDialog;
// Delete in database
await FaiCollectionHelper.DeleteByDateTimeAsync(SelectedCollections, NameConstants.SqlConnectionString);
// Get last index in buffer before selections
var indexOfFirstSelectedCollections = DatabaseBuffer.FaiCollectionBuffers.IndexOf(SelectedCollections[0]);
var lastIndexBeforeSelections =
indexOfFirstSelectedCollections == 0 ? 0 : indexOfFirstSelectedCollections - 1;
// Calculate the page index of lastIndexBeforeSelection
var pageIndex = (int)Math.Floor(lastIndexBeforeSelections / (double)DatabaseBuffer.RowsPerPage);
// Remove selections from buffer
DatabaseBuffer.Remove(SelectedCollections);
// Navigate to page where the first selection is deleted
DatabaseBuffer.NavigateToPage(pageIndex);
ShouldDisplayDialog = false;
}
