C#获取图像Exif信息

C#获取图像Exif信息

来源：yocin  时间：2012-3-22 9:05:02  栏目：技术支持  点击率：492

using System; using System.Collections.Generic; using System.Text; using System.Drawing; using System.Drawing.Imaging; namespace Console_Application {     class Program     {         public static void Main(string[] args)         {             Dictionary<string,string> exif = new Dictionary<string,string>();             Image image = Image.FromFile(@"e:\www\test.jpg");             PropertyItem[] properties = image.PropertyItems;             foreach(PropertyItem property in properties)             {                 switch(property.Id)                 {                     //Exif                     case 0x010E:                     exif["ImageTitle"] = ASCIIToString(property.Value);                         break;                     case 0x010F:                         exif["Make"] = ASCIIToString(property.Value);                         break;                     case 0x0110:                         exif["Model"] = ASCIIToString(property.Value);                         break;                     case 0x0112:                         exif["Orientation"] = ShortToString(property.Value,0);                         break;                     case 0x011A:                         exif["XResolution"] = RationalToSingle(property.Value,0);                         break;                     case 0x011B:                         exif["YResolution"] = RationalToSingle(property.Value,0);                         break;                     case 0x0128:                         exif["ResolutionUnit"] = ShortToString(property.Value,0);                         break;                     case 0x0131:                         exif["Software"] = ASCIIToString(property.Value);                         break;                     case 0x0132:                         exif["DateTime"] = ASCIIToString(property.Value);                         break;                     //GPS                     case 0x0002:                         exif["GPSLatitude"] = string.Format("{0}°{1}′{2}″",                                                             RationalToSingle(property.Value,0),                                                             RationalToSingle(property.Value,8),                                                             RationalToSingle(property.Value,16)                                                            );                         break;                     case 0x0004:                         exif["GPSLongitude"] = string.Format("{0}°{1}′{2}″",                                                             RationalToSingle(property.Value,0),                                                             RationalToSingle(property.Value,8),                                                             RationalToSingle(property.Value,16)                                                            );                         break;                     case 0x0006:                         exif["GPSAltitude"] = RationalToSingle(property.Value,0);                         break;                 }             }             foreach(KeyValuePair<string, string> kvp in exif)                 Console.WriteLine(kvp.Key + ": " + kvp.Value);             Console.ReadKey(true);         }                  //Method         static string ByteToString(byte[] b,int startindex)         {             if(startindex+1<=b.Length)                 return ((char)b[startindex]).ToString();             else                 return string.Empty;         }         static string ShortToString(byte[] b,int startindex)         {             if(startindex+2<=b.Length)                 return BitConverter.ToInt16(b,startindex).ToString();             else                 return string.Empty;         }         static string RationalToSingle(byte[] b,int startindex)         {             if(startindex+8<=b.Length)                 return (BitConverter.ToSingle(b,startindex)/BitConverter.ToSingle(b,startindex+4)).ToString();             else                 return string.Empty;         }         static string ASCIIToString(byte[] b)         {             return Encoding.ASCII.GetString(b);         }     } }