private void CopyBehaviorTreeVar()
        {
            if (listView2.SelectedItems.Count > 0)
            {
                VariableFieldListContent content = new VariableFieldListContent();
                foreach (ListViewItem lvItem in listView2.SelectedItems)
                {
                    if (lvItem.Tag is VariableFieldDesigner)
                    {
                        content.DataList.Add((VariableFieldDesigner)lvItem.Tag);
                    }
                }

                if (content.DataList.Count > 0)
                {
                    Clipboard.SetText(XmlUtility.ObjectToString(content));
                }

                MainForm.Instance.ShowInfo("您复制了" + content.DataList.Count.ToString() + "个变量!!!");
            }
            else
            {
                MainForm.Instance.ShowInfo("您必须选择至少一个进行复制!!!");
                MainForm.Instance.ShowMessage("您必须选择至少一个进行复制!!!", "警告");
            }
        }