[精华]c 读取图片exif信息的方法

[精华]c 读取图片exif信息的 C#读取图片EXIF信息的方法 #endregion#region 数据转换结构 /// summary> /// 转换数据结构 /// /summary> public struct MetadataDetail { public string Hex;//十六进制字符串 public string RawValueAsString;//原始值串 public string DisplayValue;//显示值串 } #endregion#region EXIF元素结构 /// summary> /// 结构:存储EXIF元素信息 /// /summary> public struct Metadata { public MetadataDetail EquipmentMake; public MetadataDetail CameraModel; public MetadataDetail ExposureTime;//曝光时间 public MetadataDetail Fstop; public MetadataDetail DatePictureTaken; public MetadataDetail ShutterSpeed;// 快门速度 public MetadataDetail MeteringMode;//曝光模式 public MetadataDetail Flash;//闪光灯 public MetadataDetail XResolution; public MetadataDetail YResolution; public MetadataDetail ImageWidth;//照片宽度 public MetadataDetail ImageHeight;//照片高度public MetadataDetail FNumber;//f值，光圈数 public MetadataDetail ExposureProg;//曝光程序 public MetadataDetail SpectralSense;// public MetadataDetail ISOSpeed;//ISO感光度 public MetadataDetail OECF;// public MetadataDetail Ver;//EXIF版本 public MetadataDetail CompConfig;//色彩设置 public MetadataDetail CompBPP;//压缩比率 public MetadataDetail Aperture;//光圈值 public MetadataDetail Brightness;//亮度值Ev public MetadataDetail ExposureBias;//曝光补偿 public MetadataDetail MaxAperture;//最大光圈值public MetadataDetail SubjectDist;// 主体距离 public MetadataDetail LightSource;//白平衡 public MetadataDetail FocalLength;//焦距 public MetadataDetail FPXVer;//FlashPix版本 public MetadataDetail ColorSpace;//色彩空间 public MetadataDetail Interop;// public MetadataDetail FlashEnergy;// public MetadataDetail SpatialFR;// public MetadataDetail FocalXRes;// public MetadataDetail FocalYRes;// public MetadataDetail FocalResUnit;// public MetadataDetail ExposureIndex;//曝光指数 public MetadataDetail SensingMethod;//感应方式 public MetadataDetail SceneType;// public MetadataDetail CfaPattern;// } #endregion#region 查找EXIF元素值 public string LookupEXIFValue(string Description， string Value) { string DescriptionValue = null;switch(Description) { case "MeteringMode":#regionMeteringMode { switch(Value) { case "0": DescriptionValue = "Unknown";break; case "1": DescriptionValue = "Average";break; case "2": DescriptionValue = "Center Weighted Average";break; case "3": DescriptionValue = "Spot";break; case "4": DescriptionValue = "Multi-spot";break; case "5": DescriptionValue = "Multi-segment";break; case "6": DescriptionValue = "Partial";break; case "255": DescriptionValue = "Other";break; } } #endregionbreak; case "ResolutionUnit":#region ResolutionUnit { switch(Value) { case "1": DescriptionValue = "No Units";break; case "2": DescriptionValue = "Inch";break; case "3": DescriptionValue = "Centimeter";break; } }#endregionbreak; //省略,行相似代码} return DescriptionValue; } #endregion#region 取得图片的EXIF信息 public Metadata GetEXIFMetaData(string PhotoName) { // 创建一个图片的实例 System.Drawing.Image MyImage = System.Drawing.Image.FromFile(PhotoName); // 创建一个整型数组来存储图像中属性数组的ID int[] MyPropertyIdList = MyImage.PropertyIdList; //创建一个封闭图像属性数组的实例 PropertyItem[] MyPropertyItemList = new PropertyItem[MyPropertyIdList.Length]; //创建一个图像EXIT信息的实例结构对象，并且赋初值#region 创建一个图像EXIT信息的实例结构对象，并且赋初值 Metadata MyMetadata = new Metadata(); MyMetadata.EquipmentMake.Hex = "10f"; MyMetadata.CameraModel.Hex = "110"; MyMetadata.DatePictureTaken.Hex = "9003"; MyMetadata.ExposureTime.Hex = "829a"; MyMetadata.Fstop.Hex = "829d"; MyMetadata.ShutterSpeed.Hex = "9201"; MyMetadata.MeteringMode.Hex = "9207"; MyMetadata.Flash.Hex = "9209"; MyMetadata.FNumber.Hex = "829d"; // MyMetadata.ExposureProg.Hex = ""; // MyMetadata.SpectralSense.Hex = "8824"; // MyMetadata.ISOSpeed.Hex = "8827"; // MyMetadata.OECF.Hex = "8828"; // MyMetadata.Ver.Hex = "9000"; // MyMetadata.CompConfig.Hex = "9101"; // MyMetadata.CompBPP.Hex = "9102"; // MyMetadata.Aperture.Hex = "9202"; // MyMetadata.Brightness.Hex = "9203"; // MyMetadata.ExposureBias.Hex = "9204"; // MyMetadata.MaxAperture.Hex = "9205"; // MyMetadata.SubjectDist.Hex = "9206"; // MyMetadata.LightSource.Hex = "9208"; // MyMetadata.FocalLength.Hex = "920a"; // MyMetadata.FPXVer.Hex = "a000"; // MyMetadata.ColorSpace.Hex = "a001"; // MyMetadata.FocalXRes.Hex = "a20e"; // MyMetadata.FocalYRes.Hex = "a20f"; // MyMetadata.FocalResUnit.Hex = "a210"; // MyMetadata.ExposureIndex.Hex = "a215"; // MyMetadata.SensingMethod.Hex = "a217"; // MyMetadata.SceneType.Hex = "a301"; MyMetadata.CfaPattern.Hex = "a302"; #endregion// ASCII编码 System.Text.ASCIIEncoding Value = new System.Text.ASCIIEncoding();int index = 0; int MyPropertyIdListCount=MyPropertyIdList.Length; if(MyPropertyIdListCount!=0) { foreach (int MyPropertyId in MyPropertyIdList) { string hexVal = ""; MyPropertyItemList[index] = MyImage.GetPropertyItem(MyPropertyId);#region 初始化各属性 值 string myPropertyIdString=MyImage.GetPropertyItem(MyPropertyId).Id .ToString("x"); switch(myPropertyIdString) { case "10f": { MyMetadata.EquipmentMake.RawValueAsString =BitConverter.ToString(MyImage.GetPropertyItem (MyPropertyId).Value); MyMetadata.EquipmentMake.DisplayValue = Value.GetString(MyPropertyItemList[index].Value); break; }case "110": { MyMetadata.CameraModel.RawValueAsString =BitConverter.ToString(MyImage.GetPropertyItem(MyPropertyId ).Value); MyMetadata.CameraModel.DisplayValue =Value.GetString(MyPropertyItemList[index].Value); break;}case "9003": { MyMetadata.DatePictureTaken.RawValueAsString =BitConverter.ToString(MyImage.GetPropertyItem(MyPropertyId ).Value); MyMetadata.DatePictureTaken.DisplayValue =Value.GetString(MyPropertyItemList[index].Value); break; } //省略,行相似代码 } #endregionindex++; } }MyMetadata.XResolution.DisplayValue = MyImage.HorizontalResolution.ToString(); MyMetadata.YResolution.DisplayValue = MyImage.VerticalResolution.ToString(); MyMetadata.ImageHeight.DisplayValue = MyImage.Height.ToString(); MyMetadata.ImageWidth.DisplayValue = MyImage.Width.ToString(); MyImage.Dispose(); return MyMetadata; } #endregion } } 然后就是个调用的问题，有了这个类，我如何读取图片的,,，,信息呢,代码如下: EXIFMetaData em = new EXIFMetaData(); string filePath=Server.MapPath("Test.jpg");//这里可以动态传递图片路径的 EXIFMetaData.Metadata m = em.GetEXIFMetaData(filePath);//这里就是调用，传图片绝对路径 string exif = m.Ver.DisplayValue; string camera = m.CameraModel.DisplayValue; string model = m.CameraModel.DisplayValue; string aperture = m.Aperture.DisplayValue; string shutter = m.ShutterSpeed.DisplayValue; string sensitive = m.ExposureIndex.DisplayValue;