使用System.Drawing.Imaging.dll进行图片的合并

 1 #region 两张图片的合并
 2 
 3         ///  <summary > 
 4         /// 将Image对象转化成二进制流 
 5         ///  </summary > 
 6         ///  <param name="image" > </param > 
 7         ///  <returns > </returns > 
 8         public byte[] ImageToByteArray(Image image)
 9         {
10             //实例化流 
11             MemoryStream imageStream = new MemoryStream();
12             //将图片的实例保存到流中            
13             image.Save(imageStream, System.Drawing.Imaging.ImageFormat.Jpeg);
14             //保存流的二进制数组 
15             byte[] imageContent = new Byte[imageStream.Length];
16             imageStream.Position = 0;
17             //将流泻如数组中 
18             imageStream.Read(imageContent, 0, (int)imageStream.Length);
19             return imageStream.ToArray();
20         }
21 
22         /// <summary>
23         /// 两张图片的合并
24         /// </summary>
25         /// <param name="mainImgePath">主图的路径</param>
26         /// <param name="secondaryImgePath">被合并的图片的图片的路径(次图)</param>
27         /// <param name="x">将次图 合并的主图的坐标的 X轴</param>
28         /// <param name="y">将次图 合并的主图的坐标的 Y轴</param>
29         /// <param name="width">合并后次图的宽度</param>
30         /// <param name="height">合并后次图的高度</param>
31         /// <returns></returns>
32         public Image BuildImage(string mainImgePath, string secondaryImgePath, int x, int y, int width, int height)
33         {
34             Image img = Image.FromFile(mainImgePath);
35             Image qr = Image.FromFile(secondaryImgePath);
36             Graphics g = Graphics.FromImage(img);
37             g.DrawImage(qr, x, y, width, height);
38             return img;
39         }
40         #endregion