调用代码：
1 try 2 { 3 if (!string.IsNullOrEmpty(DirFile)) 4 { 5 List<string> dirs = ImageFile(DirFile); 6 foreach (var item in dirs) 7 { 8 ImageWatermark(item, water, comboBox1.SelectedItem.ToString()); 9 10 } 11 MessageBox.Show("批量设置完成！"); 12 } 13 14 if (!string.IsNullOrEmpty(ItemFile)) 15 { 16 ImageWatermark(ItemFile, water, comboBox1.SelectedItem.ToString()); 17 MessageBox.Show("单个设置完成！"); 18 } 19 } 20 catch (Exception ex) 21 { 22 MessageBox.Show(ex.Message); 23 }
实现代码：
1 #region 图片水印 2 /// <summary> 3 /// 图片水印处理方法 4 /// </summary> 5 /// <param name="path">需要加载水印的图片路径（绝对路径）</param> 6 /// <param name="waterpath">水印图片（绝对路径）</param> 7 /// <param name="location">水印位置（传送正确的代码）</param> 8 public static string ImageWatermark(string path, string waterpath, string location) 9 { 10 string kz_name = Path.GetExtension(path); 11 if (kz_name == ".jpg" || kz_name == ".bmp" || kz_name == ".jpeg") 12 { 13 DateTime time = DateTime.Now; 14 string filename = "" + time.Year.ToString() + time.Month.ToString() + time.Day.ToString() + time.Hour.ToString() + time.Minute.ToString() + time.Second.ToString() + time.Millisecond.ToString(); 15 Image img = Bitmap.FromFile(path); 16 Image waterimg = Image.FromFile(waterpath); 17 Graphics g = Graphics.FromImage(img); 18 ArrayList loca = GetLocation(location, img, waterimg); 19 g.DrawImage(waterimg, new Rectangle(int.Parse(loca[0].ToString()), int.Parse(loca[1].ToString()), waterimg.Width, waterimg.Height)); 20 waterimg.Dispose(); 21 g.Dispose(); 22 string newpath; 23 bool isEquall = false; 24 if (savePath == Path.GetDirectoryName(path)) 25 { 26 newpath = Path.GetDirectoryName(path) + filename + kz_name; 27 isEquall = true; 28 } 29 else 30 { 31 newpath = savePath + "\\" + Path.GetFileName(path); 32 } 33 img.Save(newpath); 34 img.Dispose(); 35 if (isEquall) 36 { 37 File.Copy(newpath, path, true); 38 if (File.Exists(newpath)) 39 { 40 File.Delete(newpath); 41 } 42 } 43 } 44 return path; 45 } 46 47 /// <summary> 48 /// 图片水印位置处理方法 49 /// </summary> 50 /// <param name="location">水印位置</param> 51 /// <param name="img">需要添加水印的图片</param> 52 /// <param name="waterimg">水印图片</param> 53 private static ArrayList GetLocation(string location, Image img, Image waterimg) 54 { 55 ArrayList loca = new ArrayList(); 56 int x = 0; 57 int y = 0; 58 59 if (location == "左上") 60 { 61 x = 10; 62 y = 10; 63 } 64 else if (location == "顶部") 65 { 66 x = img.Width / 2 - waterimg.Width / 2; 67 // y = img.Height - waterimg.Height; 68 y = 10; 69 } 70 else if (location == "右上") 71 { 72 x = img.Width - waterimg.Width; 73 y = 10; 74 } 75 else if (location == "左中") 76 { 77 x = 10; 78 y = img.Height / 2 - waterimg.Height / 2; 79 } 80 else if (location == "中间") 81 { 82 x = img.Width / 2 - waterimg.Width / 2; 83 y = img.Height / 2 - waterimg.Height / 2; 84 } 85 else if (location == "右中") 86 { 87 x = img.Width - waterimg.Width; 88 y = img.Height / 2 - waterimg.Height / 2; 89 } 90 else if (location == "左下") 91 { 92 x = 10; 93 y = img.Height - waterimg.Height; 94 } 95 else if (location == "底部") 96 { 97 x = img.Width / 2 - waterimg.Width / 2; 98 y = img.Height - waterimg.Height; 99 } 100 else 101 { 102 x = img.Width - waterimg.Width; 103 y = img.Height - waterimg.Height; 104 } 105 loca.Add(x); 106 loca.Add(y); 107 return loca; 108 } 109 #endregion