private DTE2 _applicationObject;

public void AutoAddControl(插件 v_form1)
        {
            //得到当前文件的名称
            string v_pathfile = _applicationObject.ActiveDocument.FullName;
            //打开文件 "Form1.Designer.cs"
            if (!(v_pathfile.EndsWith(".cs")))
            {
                MessageBox.Show("当前文件不是.cs文件");
                return;
            }
            v_pathfile = System.IO.Path.ChangeExtension(v_pathfile, ".Designer.cs");
            _applicationObject.ItemOperations.OpenFile(v_pathfile);
            string v_file = System.IO.Path.GetFileName(v_pathfile);
            _applicationObject.Windows.Item(v_file).Activate();
            //修改文件内容 "Form1.Designer.cs"
            Document v_doc = _applicationObject.ActiveDocument;
            TextSelection selection = (TextSelection)_applicationObject.ActiveDocument.Selection;
            selection.SelectAll();
            string v_text = selection.Text;
            v_text = v_form1.ChangeDoc1(v_text);
            selection.SelectAll();
            selection.Text = "";
            selection.Insert(v_text);
            //保存文件 "Form1.Designer.cs" 
            _applicationObject.ActiveDocument.Save();
            _applicationObject.ExecuteCommand("Window.CloseDocumentWindow");

　　       //vsSaveChangesYes保存并关闭当前活动窗体
            //_applicationObject.ActiveWindow.Close(vsSaveChanges.vsSaveChangesYes);
        }