public void btnReplacedSaved_click(object sender, EventArgs e) { //TreeNode foundNode = (TreeNode)saveList.Find(myTree.findNode(int.Parse(txtKey.Text))); TreeNode foundNode = myTree.findNode(int.Parse(txtKey.Text)); DisplayAlert("replaced", saveList.getData().ToString() + " with " + foundNode.ToString(), "OK"); saveList.editCurrent(foundNode); lblSaveList.Text = saveList.getData().ToString(); }