net7.0
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@ -1,3 +1,10 @@
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using System.Diagnostics;
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using System.Drawing;
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using System.Drawing.Imaging;
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using System.Globalization;
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using System.Runtime.InteropServices;
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using System.Text;
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namespace View_by_Distance.Shared.Models.Stateless.Methods;
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internal abstract class Property
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@ -85,7 +92,46 @@ internal abstract class Property
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return new(result, results);
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}
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internal static List<DateTime> GetDateTimes(DateTime creationTime, DateTime lastWriteTime, DateTime? dateTime, DateTime? dateTimeDigitized, DateTime? dateTimeOriginal, DateTime? gpsDateStamp)
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internal static DateTime? GetDateTimeFromName(Models.FileHolder fileHolder)
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{
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DateTime? result = null;
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int length;
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string format;
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string fullFormat;
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StringBuilder value = new();
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string[][] dateFormats = new string[][]
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{
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new string[] { string.Empty, "yyyyMMdd_HHmmss", string.Empty },
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new string[] { string.Empty, "yyyy-MM-dd HH.mm.ss", string.Empty },
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new string[] { string.Empty, "yyyyMMdd_HHmmss", "_LLS" },
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new string[] { string.Empty, "yyyyMMdd_HHmmss", "_HDR" },
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new string[] { "IMG_", "yyyyMMdd_HHmmss", string.Empty },
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new string[] { "IMG#####-", "yyyyMMdd-HHmm", string.Empty },
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new string[] { "CameraZOOM-", "yyyyMMddHHmmss", string.Empty },
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new string[] { "VideoCapture_", "yyyyMMdd-HHmmss ", string.Empty }
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};
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foreach (string[] dateFormat in dateFormats)
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{
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_ = value.Clear();
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fullFormat = string.Join(string.Empty, dateFormat);
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if (fileHolder.NameWithoutExtension.Length != fullFormat.Length)
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continue;
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format = dateFormat[1];
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length = dateFormat[0].Length + dateFormat[1].Length;
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for (int i = dateFormat[0].Length; i < length; i++)
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_ = value.Append(fileHolder.NameWithoutExtension[i]);
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if (value.Length != format.Length)
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continue;
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if (DateTime.TryParseExact(value.ToString(), format, CultureInfo.InvariantCulture, DateTimeStyles.None, out DateTime checkDateTime))
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{
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result = checkDateTime;
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break;
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}
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}
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return result;
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}
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internal static List<DateTime> GetDateTimes(DateTime creationTime, DateTime lastWriteTime, DateTime? dateTime, DateTime? dateTimeDigitized, DateTime? dateTimeFromName, DateTime? dateTimeOriginal, DateTime? gpsDateStamp)
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{
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List<DateTime> results = new()
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{
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@ -96,6 +142,8 @@ internal abstract class Property
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results.Add(dateTime.Value);
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if (dateTimeDigitized.HasValue)
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results.Add(dateTimeDigitized.Value);
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if (dateTimeFromName.HasValue)
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results.Add(dateTimeFromName.Value);
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if (dateTimeOriginal.HasValue)
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results.Add(dateTimeOriginal.Value);
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if (gpsDateStamp.HasValue)
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@ -119,6 +167,8 @@ internal abstract class Property
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dateTimes.Add(property.DateTime.Value);
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if (property.DateTimeDigitized.HasValue)
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dateTimes.Add(property.DateTimeDigitized.Value);
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if (property.DateTimeFromName.HasValue)
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dateTimes.Add(property.DateTimeFromName.Value);
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if (property.DateTimeOriginal.HasValue)
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dateTimes.Add(property.DateTimeOriginal.Value);
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if (property.GPSDateStamp.HasValue)
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@ -269,4 +319,119 @@ internal abstract class Property
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return result;
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}
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internal static List<DateTime> GetMetadataDateTimesByPattern(string dateTimeFormat, string sourceDirectoryFile)
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{
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List<DateTime> results = new();
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try
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{
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DateTime checkDateTime;
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DateTime kristy = new(1976, 3, 8);
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IReadOnlyList<MetadataExtractor.Directory> directories = MetadataExtractor.ImageMetadataReader.ReadMetadata(sourceDirectoryFile);
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foreach (MetadataExtractor.Directory directory in directories)
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{
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foreach (MetadataExtractor.Tag tag in directory.Tags)
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{
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if (string.IsNullOrEmpty(tag.Description) || tag.Description.Length != dateTimeFormat.Length)
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continue;
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if (!DateTime.TryParseExact(tag.Description, dateTimeFormat, CultureInfo.InvariantCulture, DateTimeStyles.None, out checkDateTime))
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continue;
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if (checkDateTime < kristy)
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continue;
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results.Add(checkDateTime);
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}
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}
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}
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catch (Exception) { }
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return results;
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}
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#pragma warning disable CA1416
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internal static (DateTime?, int?, string?) Get(Models.FileHolder fileHolder)
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{
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byte[] bytes;
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string value;
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int? id = null;
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DateTime checkDateTime;
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string? message = null;
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DateTime? dateTime = null;
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PropertyItem? propertyItem;
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DateTime? gpsDateStamp = null;
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DateTime? dateTimeOriginal = null;
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DateTime? dateTimeDigitized = null;
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ASCIIEncoding asciiEncoding = new();
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string dateTimeFormat = IProperty.DateTimeFormat();
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try
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{
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using Image image = Image.FromFile(fileHolder.FullName);
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using Bitmap bitmap = new(image);
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Rectangle rectangle = new(0, 0, image.Width, image.Height);
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BitmapData bitmapData = bitmap.LockBits(rectangle, ImageLockMode.ReadOnly, bitmap.PixelFormat);
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IntPtr intPtr = bitmapData.Scan0;
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int length = bitmapData.Stride * bitmap.Height;
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bytes = new byte[length];
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Marshal.Copy(intPtr, bytes, 0, length);
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bitmap.UnlockBits(bitmapData);
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id = IProperty.GetDeterministicHashCode(bytes);
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if (image.PropertyIdList.Contains((int)IExif.Tags.DateTime))
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{
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propertyItem = image.GetPropertyItem((int)IExif.Tags.DateTime);
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if (propertyItem?.Value is not null)
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{
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value = asciiEncoding.GetString(propertyItem.Value, 0, propertyItem.Len - 1);
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if (value.Length > dateTimeFormat.Length)
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value = value[..dateTimeFormat.Length];
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if (value.Length == dateTimeFormat.Length && DateTime.TryParseExact(value, dateTimeFormat, CultureInfo.InvariantCulture, DateTimeStyles.None, out checkDateTime))
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dateTime = checkDateTime;
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}
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}
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if (image.PropertyIdList.Contains((int)IExif.Tags.DateTimeDigitized))
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{
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propertyItem = image.GetPropertyItem((int)IExif.Tags.DateTimeDigitized);
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if (propertyItem?.Value is not null)
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{
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value = asciiEncoding.GetString(propertyItem.Value, 0, propertyItem.Len - 1);
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if (value.Length > dateTimeFormat.Length)
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value = value[..dateTimeFormat.Length];
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if (value.Length == dateTimeFormat.Length && DateTime.TryParseExact(value, dateTimeFormat, CultureInfo.InvariantCulture, DateTimeStyles.None, out checkDateTime))
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dateTimeDigitized = checkDateTime;
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}
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}
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if (image.PropertyIdList.Contains((int)IExif.Tags.DateTimeOriginal))
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{
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propertyItem = image.GetPropertyItem((int)IExif.Tags.DateTimeOriginal);
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if (propertyItem?.Value is not null)
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{
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value = asciiEncoding.GetString(propertyItem.Value, 0, propertyItem.Len - 1);
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if (value.Length > dateTimeFormat.Length)
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value = value[..dateTimeFormat.Length];
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if (value.Length == dateTimeFormat.Length && DateTime.TryParseExact(value, dateTimeFormat, CultureInfo.InvariantCulture, DateTimeStyles.None, out checkDateTime))
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dateTimeOriginal = checkDateTime;
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}
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}
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if (image.PropertyIdList.Contains((int)IExif.Tags.GPSDateStamp))
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{
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propertyItem = image.GetPropertyItem((int)IExif.Tags.GPSDateStamp);
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if (propertyItem?.Value is not null)
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{
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value = asciiEncoding.GetString(propertyItem.Value, 0, propertyItem.Len - 1);
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if (value.Length > dateTimeFormat.Length)
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value = value[..dateTimeFormat.Length];
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if (value.Length == dateTimeFormat.Length && DateTime.TryParseExact(value, dateTimeFormat, CultureInfo.InvariantCulture, DateTimeStyles.None, out checkDateTime))
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gpsDateStamp = checkDateTime;
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}
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}
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bitmap.Dispose();
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image.Dispose();
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}
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catch (Exception)
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{
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message = string.Concat(new StackFrame().GetMethod()?.Name, " <", fileHolder.FullName, ">");
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}
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DateTime?[] dateTimes = new DateTime?[] { fileHolder.LastWriteTime, fileHolder.CreationTime, dateTime, dateTimeDigitized, dateTimeOriginal, gpsDateStamp };
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return new(dateTimes.Min(), id, message);
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}
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#pragma warning restore CA1416
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}
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