protected override void PrepareContainerForItemOverride(DependencyObject element, object item)
{
//设置Item的显示数字
StepBarItem stepBarItem = element as StepBarItem;
ItemsControl itemsControl = ItemsControl.ItemsControlFromItemContainer(stepBarItem);
int index = itemsControl.ItemContainerGenerator.IndexFromContainer(stepBarItem);
stepBarItem.Number = Convert.ToString(++index);
base.PrepareContainerForItemOverride(element, item);
}
protected override void OnItemsChanged(NotifyCollectionChangedEventArgs e)
{
base.OnItemsChanged(e);
//ItemsControl数量变化时，重新设置各个Item的显示的数字
for (int i = 0; i < this.Items.Count; i++)
{
StepBarItem stepBarItem = this.ItemContainerGenerator.ContainerFromIndex(i) as StepBarItem;
if(stepBarItem != null)
{
int temp = i;
stepBarItem.Number = Convert.ToString(++temp);
}
}
//进度重新回到第一个
this.Progress = 0;
}