/// <summary>
/// 绑定command删除多个会出问题
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void RemoveLayer_Click(object sender, RoutedEventArgs e)
{
List <LayerBase> list = new List <LayerBase>();
foreach (var item in LayerGroup.SelectedItems)
{
list.Add(item as LayerBase);
}
LayerGroup.UnselectAll();
Service.RemoveLayer(list);
}