子线程调用窗体控件

        public delegate void OutDelegate(string text);
        public void OutText(string text)
        {
            if (listBox1.InvokeRequired)
            {
                OutDelegate outdelegate = new OutDelegate(OutText);
                this.BeginInvoke(outdelegate, new object[] { text });
                return;
            }

            listBox1.Items.Add(DateTime.Now.ToString() + "" + text);
            listBox1.SelectedIndex = listBox1.Items.Count - 1;
        }

把listBox1换成你需要的控件，把方法放在你的窗体cs上，子线程直接调用OutText方法即可