Writes a marker to an existing file.
public void WriteMarker(
string fileName,
int pageNumber,
RasterMarkerMetadata marker
)
Public Overloads Sub WriteMarker( _
ByVal fileName As String, _
ByVal pageNumber As Integer, _
ByVal marker As RasterMarkerMetadata _
)
- (BOOL)writeMarker:(nullable LTRasterMarkerMetadata *)marker
toFile:(NSString *)file
pageNumber:(NSInteger)pageNumber
error:(NSError **)error
public:
void WriteMarker(
String^ fileName,
int pageNumber,
RasterMarkerMetadata^ marker
)
fileName
A String that contains the file name.
pageNumber
1-based index of the page at which to write the marker.
marker
A RasterMarkerMetadata object that contains the marker data.
For Exif files, this metadata collection will contain all the Exif and GPS comments, stored in APP1. It will also contain the audio information stored in APP2.
When you add or remove tags, the tags array at the end of the file is re-written. When you modify existing tags, the new tag value is added to the file and the IFD is modified as necessary. In all of these cases, there is no image recompression.
This example read the markers from a source file and saving them to a destination file
using Leadtools;
using Leadtools.Codecs;
using Leadtools.ImageProcessing;
using Leadtools.ImageProcessing.Color;
using Leadtools.Svg;
using LeadtoolsExamples.Common;
void MarkersExample(string srcFileName, string destFileName)
{
RasterCodecs codecs = new RasterCodecs();
// Load the source image with markers
Console.WriteLine("Loading the source image with all markers");
codecs.Options.Load.Markers = true;
RasterImage srcImage = codecs.Load(srcFileName);
// Show the markers loaded
Console.WriteLine("These markers were loaded:");
foreach (RasterMarkerMetadata marker in srcImage.Markers)
{
byte[] data = marker.GetData();
Console.WriteLine(" {0}, DataSize:{1}", marker.Id, data.Length);
}
// Create the destination image
RasterImage destImage = new RasterImage(
RasterMemoryFlags.Conventional,
320,
20,
24,
RasterByteOrder.Bgr,
RasterViewPerspective.TopLeft,
null,
IntPtr.Zero,
0);
// Save this as JPEG
codecs.Save(destImage, destFileName, RasterImageFormat.Jpeg, 24);
// Write the markers from the source image to this destination image
Console.WriteLine("Writing the markers to the destination file");
codecs.WriteMarkers(destFileName, 1, srcImage.Markers);
srcImage.Dispose();
destImage.Dispose();
// Re-load the destination image with markers
Console.WriteLine("Loading the destination image with all markers");
codecs.Options.Load.Markers = true;
destImage = codecs.Load(destFileName);
// Show the markers loaded
Console.WriteLine("These markers were loaded:");
foreach (RasterMarkerMetadata marker in destImage.Markers)
{
byte[] data = marker.GetData();
Console.WriteLine(" {0}, DataSize:{1}", marker.Id, data.Length);
}
destImage.Dispose();
// Clean up
codecs.Dispose();
}
Imports Leadtools
Imports Leadtools.Codecs
Imports Leadtools.ImageProcessing
Imports Leadtools.ImageProcessing.Color
Imports Leadtools.Drawing
Imports Leadtools.Svg
Private Sub MarkersExample(ByVal srcFileName As String, ByVal destFileName As String)
Dim codecs As RasterCodecs = New RasterCodecs()
' Load the source image with markers
Console.WriteLine("Loading the source image with all markers")
codecs.Options.Load.Markers = True
Dim srcImage As RasterImage = codecs.Load(srcFileName)
' Show the markers loaded
Console.WriteLine("These markers were loaded:")
For Each marker As RasterMarkerMetadata In srcImage.Markers
Dim data As Byte() = marker.GetData()
Console.WriteLine(" {0}, DataSize:{1}", marker.Id, data.Length)
Next marker
' Create the destination image
Dim destImage As RasterImage = New RasterImage(RasterMemoryFlags.Conventional, 320, 20, 24, RasterByteOrder.Bgr, RasterViewPerspective.TopLeft, Nothing, IntPtr.Zero, 0)
' Save this as JPEG
codecs.Save(destImage, destFileName, RasterImageFormat.Jpeg, 24)
' Write the markers from the source image to this destination image
Console.WriteLine("Writing the markers to the destination file")
codecs.WriteMarkers(destFileName, 1, srcImage.Markers)
srcImage.Dispose()
destImage.Dispose()
' Re-load the destination image with markers
Console.WriteLine("Loading the destination image with all markers")
codecs.Options.Load.Markers = True
destImage = codecs.Load(destFileName)
' Show the markers loaded
Console.WriteLine("These markers were loaded:")
For Each marker As RasterMarkerMetadata In destImage.Markers
Dim data As Byte() = marker.GetData()
Console.WriteLine(" {0}, DataSize:{1}", marker.Id, data.Length)
Next marker
destImage.Dispose()
' Clean up
codecs.Dispose()
End Sub
c#[Silverlight C# Example]
using Leadtools;
using Leadtools.Codecs;
using Leadtools.Examples;
using Leadtools.ImageProcessing;
using Leadtools.ImageProcessing.Color;
using Leadtools.Windows.Media;
void MarkersExample(Stream inStreamExif, Stream outStreamJpg)
{
RasterCodecs codecs = new RasterCodecs();
// Load the source image with markers
Debug.WriteLine("Loading the source image with all markers");
codecs.Options.Load.Markers = true;
RasterImage srcImage = codecs.Load(inStreamExif);
// Show the markers loaded
Debug.WriteLine("These markers were loaded:");
foreach (RasterMarkerMetadata marker in srcImage.Markers)
{
byte[] data = marker.GetData();
Debug.WriteLine(" {0}, DataSize:{1}", marker.Id, data.Length);
}
// Create the destination image
RasterImage destImage = new RasterImage(
RasterMemoryFlags.Conventional,
320,
20,
24,
RasterByteOrder.Bgr,
RasterViewPerspective.TopLeft,
null,
null,
0);
// Save this as JPEG
codecs.Save(destImage, outStreamJpg, RasterImageFormat.Jpeg, 24);
// Write the markers from the source image to this destination image
Debug.WriteLine("Writing the markers to the destination file");
codecs.WriteMarkers(outStreamJpg, 1, srcImage.Markers);
srcImage.Dispose();
destImage.Dispose();
// Re-load the destination image with markers
Debug.WriteLine("Loading the destination image with all markers");
codecs.Options.Load.Markers = true;
destImage = codecs.Load(outStreamJpg);
// Show the markers loaded
Debug.WriteLine("These markers were loaded:");
foreach (RasterMarkerMetadata marker in destImage.Markers)
{
byte[] data = marker.GetData();
Debug.WriteLine(" {0}, DataSize:{1}", marker.Id, data.Length);
}
destImage.Dispose();
}
vb[Silverlight VB Example]
Imports Leadtools
Imports Leadtools.Codecs
Imports Leadtools.ImageProcessing
Imports Leadtools.ImageProcessing.Color
Imports Leadtools.Windows.Media
Private Sub MarkersExample(ByVal inStreamExif As Stream, ByVal outStreamJpg As Stream)
Dim codecs As RasterCodecs = New RasterCodecs()
' Load the source image with markers
Debug.WriteLine("Loading the source image with all markers")
codecs.Options.Load.Markers = True
Dim srcImage As RasterImage = codecs.Load(inStreamExif)
' Show the markers loaded
Debug.WriteLine("These markers were loaded:")
For Each marker As RasterMarkerMetadata In srcImage.Markers
Dim data As Byte() = marker.GetData()
Debug.WriteLine(" {0}, DataSize:{1}", marker.Id, data.Length)
Next marker
' Create the destination image
Dim destImage As RasterImage = New RasterImage(RasterMemoryFlags.Conventional, 320, 20, 24, RasterByteOrder.Bgr, RasterViewPerspective.TopLeft, Nothing, Nothing, 0)
' Save this as JPEG
codecs.Save(destImage, outStreamJpg, RasterImageFormat.Jpeg, 24)
' Write the markers from the source image to this destination image
Debug.WriteLine("Writing the markers to the destination file")
codecs.WriteMarkers(outStreamJpg, 1, srcImage.Markers)
srcImage.Dispose()
destImage.Dispose()
' Re-load the destination image with markers
Debug.WriteLine("Loading the destination image with all markers")
codecs.Options.Load.Markers = True
destImage = codecs.Load(outStreamJpg)
' Show the markers loaded
Debug.WriteLine("These markers were loaded:")
For Each marker As RasterMarkerMetadata In destImage.Markers
Dim data As Byte() = marker.GetData()
Debug.WriteLine(" {0}, DataSize:{1}", marker.Id, data.Length)
Next marker
destImage.Dispose()
End Sub
Help Collections
Raster .NET | C API | C++ Class Library | HTML5 JavaScript
Document .NET | C API | C++ Class Library | HTML5 JavaScript
Medical .NET | C API | C++ Class Library | HTML5 JavaScript
Medical Web Viewer .NET
Multimedia
Direct Show .NET | C API | Filters
Media Foundation .NET | C API | Transforms
Supported Platforms
.NET, Java, Android, and iOS/macOS Assemblies
Imaging, Medical, and Document
C API/C++ Class Libraries
Imaging, Medical, and Document
HTML5 JavaScript Libraries
Imaging, Medical, and Document