多线程中如何invoke获得控件的属性值，紧急求解！

 private void Form1_Load(object sender, EventArgs e)

        {

            objectListView1.Items.Clear();

            objectListView1.Items.Add("1");

            objectListView1.Items.Add("2");

            objectListView1.Items.Add("3");

            objectListView1.Items.Add("4");

            objectListView1.Items.Add("5");

        }

        private void button1_Click(object sender, EventArgs e)

        {



            Thread sd = new Thread(new ThreadStart(CountItems));

            sd.Start();

        }



        List<string> checkedselectedItems = new List<string>();



        private void CountItems() {

            ISynchronizeInvoke sync = objectListView1;

            if (sync.InvokeRequired) {

                //how to do the invoke method,get Checked Objects Items ?????

                //if user checked some items in objectListView1

                //I want to do nothing  before objectListView1.SetObjects ,

                // if do objectListView1.SetObjects and that objectListView1.CheckedObjects.Count > 0 ,

                // 



                //bool hasChecked = false;

                //while (!hasChecked)

                //{

                //    if (objectListView1.SelectedObjects.Count == 0)

                //    {

                //        hasChecked = true;// to Waiting

                //    }

                //    else

                //    {

                //        Application.DoEvents();//to do other things

                //        continue;

                //    }

                //}

/*

我的意思就是在这里，如果要刷新、更新ListView界面的列表值。而界面已有用户选中项目，为了不让刷新、更新界面冲掉选中项（不使选中项失效）

所以让刷新、更新界面在循环中等待，直到用户没有选中

*/

                

 

            } else {



                checkedselectedItems = objectListView1.CheckedObjects as List<string>;// objectListView1.SelectedObjects;

                 

            }

        }

        

     

       

    }