public void DeleteTree(TreeVM tree)
 {
     tree.Delete();
     //TreeDO.RecursiveDeleteTree(tree);
     //this.CuttingUnit.TreeList.Remove(tree);
     this.Trees.Remove(tree);
 }
 public void DeleteTree(TreeVM tree)
 {
     tree.Delete();
     this.NonPlotTrees.Remove(tree);
 }