当然是能实现的，这里有两种方式。下面的例子中，在后台现程中操作了一个名为textBox1的控件。

1、使用SynchronizationContext，这是MSDN推荐的方法，详细内容可以参考http://www.cnblogs.com/Kevin-moon/archive/2009/01/13/1374353.html

public Form1()
        {
            InitializeComponent();
            SynchronizationContext context = SynchronizationContext.Current;

            Thread thread = new Thread(new ParameterizedThreadStart(ThreadProc));
            thread.Start(context);

          }

        private void ThreadProc(object stat)
        {
            SynchronizationContext context = stat as SynchronizationContext;
            Random rand = new Random();
            context.Post(UpdateUI, rand.Next(10, 1000));
        }

        private void UpdateUI(object obj)
        {
            this.textBox1.Text = obj.ToString();
        }

2、使用Control.InvokeRequired属性，详细的说明google一下吧：

       delegate void SetTextHandler(string val);
        public Form1()
        {
            InitializeComponent();
            SynchronizationContext context = SynchronizationContext.Current;
            Thread thread1 = new Thread(new ThreadStart(ThreadProc1));
            thread1.Start();
        }

private void ThreadProc1()
        {

            Random rand = new Random();
            SetText(rand.NextDouble().ToString());
        }

        private void SetText(string val)
        {
            if (this.textBox1.InvokeRequired)
            {
                SetTextHandler handler = new SetTextHandler(SetText);
                textBox1.Invoke(handler, new object[] { val });

            }
            else
            {
                textBox1.Text = val;
            }
        }

用内置的委托也可以实现吧！

                this.Invoke((ThreadStart)delegate
                {
                  　　tabControl1.SelectedTab = tabItem8              

                });