根据给定的日期给 dateEdit 控件增加颜色

 private void dateEdit1_DrawItem(object sender, DevExpress.XtraEditors.Calendar.CustomDrawDayNumberCellEventArgs e)
        {

            if (e.Date.ToString("yyyy-MM-dd") == "2014-01-03")
            {
                RectangleF rect = new RectangleF(e.Bounds.Location, e.Bounds.Size);
                Color backColor = Color.Red;
                e.Graphics.FillRectangle(new SolidBrush(backColor), rect);
            }

        }

原文：http://www.cnblogs.com/xiajing12345/p/3515112.html