this.txtOCardNO1.Invoke(new MethodInvoker(
                    delegate
                    {
                        txtOCardNO1.Text = pcid;
                    }
                ));

                this.txtOutTime.Invoke(new MethodInvoker(
                    delegate
                    {
                        txtOutTime.Text = DateTime.Now.ToString();
                    }
                ));

            if (textBox1.InvokeRequired)
            { 
                textBox1.Invoke(...);
            }