//设置tablelayoutpanel控件的DoubleBuffered 属性为true，这样可以减少或消除由于不断重绘所显示图面的某些部分而导致的闪烁

private void Form_PrintPreview_Load(object sender, EventArgs e)        {            //开启双缓冲，改善TableLayoutPanel闪烁问题            TableLayoutPanel1.GetType().GetProperty("DoubleBuffered", System.Reflection.BindingFlags.Instance | System.Reflection.BindingFlags.NonPublic).SetValue(TableLayoutPanel1, true,null);        }