1 //透明背景图
 2            Brush b = new SolidBrush(Color.FromArgb(50, Color.Transparent));
 3
 4
 5            Bitmap image = new Bitmap(1015, 637);
 6            Graphics g = Graphics.FromImage(image);
 7            g.Clear(Color.Transparent);
 8            g.FillRectangle(b, 0, 0, 1015, 637);
 9            //g.DrawRectangle(Pens.Plum, 0, 0, 299, 49);
10            //Font font = new Font("Alba Super", 20, FontStyle.Underline);
11            //g.DrawString("This is a test.", font, Brushes.Plum, 10, 0);
12
13            //System.Drawing.Image icon = System.Drawing.Image.FromFile(Server.MapPath("your.gif"));
14            //g.DrawImageUnscaled(icon, 240, 0);
15
16            //image.Save(Response.OutputStream, System.Drawing.Imaging.ImageFormat.Gif);
17            //SolidBrush:定义单色画笔。画笔用于填充图形形状，如矩形、椭圆、扇形、多边形和封闭路径。
18            //这个画笔为描绘阴影的画笔，呈灰色
19            float alpha = 0;
20            int m_alpha = Convert.ToInt32(256 * alpha);
21            SolidBrush semiTransBrush2 = new SolidBrush(Color.FromArgb(m_alpha, 0, 0, 0));
22
23            //从四个 ARGB 分量（alpha、红色、绿色和蓝色）值创建 Color 结构，这里设置透明度为153
24            //这个画笔为描绘正式文字的笔刷，呈白色
25            SolidBrush semiTransBrush = new SolidBrush(Color.FromArgb(153, 255, 255, 255));
26
27
28            g.DrawImage(image, 0, 0, image.Width, image.Height);
29            Font f = new Font(setFont, 18, FontStyle.Bold); //字體大小
30            Font fno = new Font(setFont, 10, FontStyle.Bold);
31            Font fclerk = new Font(setFont, 8, FontStyle.Bold);
32            Brush fb = new SolidBrush(Color.Black); //字體顏色
33            string addText = "塗聚文";
34            //new RectangleF(0, 0, 500, 500), strFormat)
35            g.DrawString(addText, f, fb, new RectangleF(130, 220, 550, 110), new StringFormat());//放的姓名位置
36            g.DrawString("行政及人事管理人員", fclerk, fb, new RectangleF(130, 410, 550, 110), new StringFormat());//放職稱的位置
37            g.DrawString("行政及人力资源管理部", fno, fb, new RectangleF(130, 470, 550, 110), new StringFormat());//放部門名稱的位置
38            g.DrawString("L00094", fno, fb, new RectangleF(130, 540, 550, 110), new StringFormat()); //放員工編號的位置
39
40            int xPosOfWm;
41            int yPosOfWm;
42            int phWidth = image.Width;
43            int phHeight = image.Height;
44            Photopath = dirInfo + "2cun.jpg"; //2寸照片
45            System.Drawing.Image copyImage = System.Drawing.Image.FromFile(Photopath);
46            int wmWidth = copyImage.Width;
47            int wmHeight = copyImage.Height;
48
49
50            xPosOfWm = phWidth - wmWidth - 80;
51            yPosOfWm = 80;
52            StringFormat strFormat = new StringFormat();
53
54            g.DrawImage(copyImage, new Rectangle(xPosOfWm, yPosOfWm, wmWidth, wmHeight), 0, 0, copyImage.Width, copyImage.Height, GraphicsUnit.Pixel);
55
56            // Make backColor transparent for myBitmap.
57            ImageAttributes imgAttribs = new ImageAttributes();
58            imgAttribs.SetColorKey(Color.FromArgb(255, 255, 255), Color.FromArgb(255, 255, 255));
59            Color backColor = Color.Transparent;
60            image.MakeTransparent(backColor);
61            //image = MakeTransparentGif(image, Color.Transparent);
62            // Draw the transparent bitmap to the screen.
63            //g.DrawImage(image, image.Width, 0, image.Width, image.Height);
64            this.pictureBox1.Image = image;
65            image.Save(dirInfo + @"geovindu_1011.jpg", ImageFormat.Jpeg);
66
67            g.Dispose();