private void ScrollViewer_ScrollChanged(object sender, ScrollChangedEventArgs e)
{
if ((int)(e.VerticalOffset / (e.ExtentHeight - e.ViewportHeight) * 100) >= _ratioTriggeringScroll)
{
if (Items.Count < Data.Count)
{
int itemsCount = Items.Count;
for (int i = itemsCount; i < (itemsCount + _muchToOutput < Data.Count ? itemsCount + _muchToOutput : Data.Count); i++)
{
var item = Activator.CreateInstance(TypesBlockViewItem.Find(t => t.Name == TypeItem.ToString())) as BlockViewItem;
item.VerticalAlignment = VerticalAlignment.Top;
item.HorizontalAlignment = HorizontalAlignment.Stretch;
item.Margin = new Thickness(0, 10 + (i * (item.Height + 10)), 10, 0);
item.Data = Data[i];
item.Click += Item_Click;
Items.Add(item);
RenderContorl(item);
}
}
}
}
private void GenerateItems()
{
Items.Clear();
for (int i = 0; i < (Data.Count > _startupToOutput ? _startupToOutput : Data.Count); i++)
{
BlockViewItem item = Activator.CreateInstance(TypesBlockViewItem.Find(t => t.Name == TypeItem.ToString())) as BlockViewItem;
item.VerticalAlignment = VerticalAlignment.Top;
item.HorizontalAlignment = HorizontalAlignment.Stretch;
item.Margin = new Thickness(0, 10 + (i * (item.Height + 10)), 10, 0);
item.Data = Data[i];
item.Click += Item_Click;
Items.Add(item);
}
}