C#窗體繪製條形圖

效果 圖：

添加一個PictureBox控件代碼：

 // 繪製柱狀統計圖的完整代碼
        private void CreateExaminationBarChart()
        {
            int height = 500, width = 700;
            Bitmap bitmap = new Bitmap(width, height);
            //創建Graphics類對象 
            Graphics g = Graphics.FromImage(bitmap);


          
            try
            {
                //清空圖片背景色 
                g.Clear(Color.White);

                Font font = new Font("Arial", 10, FontStyle.Regular);
                Font font1 = new Font("宋體", 20, FontStyle.Bold);

                LinearGradientBrush brush = new LinearGradientBrush(new Rectangle(0, 0, bitmap.Width, bitmap.Height),
                Color.Blue, Color.BlueViolet, 1.2f, true);