/// <summary>
 /// 删除
 /// </summary>
 /// <param name="bz"></param>
 public void Del(BezierLine bz)
 {
     if (bz == null)
     {
         return;
     }
     if (contentsCanvas.Children.Contains(bz))
     {
         contentsCanvas.Children.Remove(bz);
     }
     if (BzLines.Contains(bz))
     {
         BzLines.Remove(bz);
     }
     if ((bz.LeftElement as MLParatItemLayout) != null)
     {
         (bz.LeftElement as MLParatItemLayout).Del(bz);
     }
     if (bz.RightElement as MLParatItemLayout != null)
     {
         (bz.RightElement as MLParatItemLayout).Del(bz);
     }
     bz.ClearEndBind();
     bz.ClearStartBind();
     bz.Dispose();
     bz = null;
 }
 /// <summary>
 /// 曲线
 /// </summary>
 /// <param name="bz"></param>
 public void Add(BezierLine bz)
 {
     //bz.Stroke = new SolidColorBrush(Colors.White);
     bz.StrokeThickness = 5;
     contentsCanvas.Children.Add(bz);
     BzLines.Add(bz);
 }