RasterImage Constructor(SerializationInfo,StreamingContext)

Visual Basic
C#
WinRT C#
WinRT JavaScript
C++

protected RasterImage( 
   SerializationInfo info,
   StreamingContext context
)

'Declaration
 
Protected Function New( _
   ByVal info As SerializationInfo, _
   ByVal context As StreamingContext _
)

'Usage
 
Dim info As SerializationInfo
Dim context As StreamingContext
 
Dim instance As New RasterImage(info, context)

protected RasterImage( 
   SerializationInfo info,
   StreamingContext context
)

function RasterImage( 
   info ,
   context 
)

protected:
RasterImage( 
   SerializationInfo^ info,
   StreamingContext context
)

Parameters

info: The data needed to serialize or deserialize an object.
context: The source and destination of a given serialized stream.

The RasterImage class supports standard .NET serialization. Serialization of a RasterImage is the process of converting the state of a RasterImage object into a form that can be persisted or transported. The complement of serialization is deserialization, which converts a stream into an RasterImage object. Together, these processes allow the image data to be easily stored and transferred.

When you serialize an RasterImage object, all the data inside the object are saved. This includes the image data of all pages as well as the current page number, region information, low bit/high bit, palette data, metadata (tags, markers and comments), etc. In other words, the RasterImage can be constructed back to its original state from the stream.

For more information and examples regarding serialization of an RasterImage object, refer to RasterImage Serialization.

For more information, refer to Grayscale Images.

Visual Basic
C#
WinRT C#
WinRT JavaScript
Silverlight C#
Silverlight VB

Public Sub MyRasterImageSerializationTest()
      ' Load an image
      Dim codecs As RasterCodecs = New RasterCodecs()

      Dim img As RasterImage = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, "Image1.cmp"))

      ' create a new MyRasterImage instance out of this image
      Dim myImage As MyRasterImage = New MyRasterImage(img)

      ' Set our custom data
      myImage.MyIntegerData = 10
      myImage.MyStringData = "My string"
      Dim msg As String = String.Format("Before serialization.  MyIntegerData = {0}, MyStringData = {1}", myImage.MyIntegerData, myImage.MyStringData)
      MessageBox.Show(msg)

      ' img is invalid now and should be disposed
      img.Dispose()

      ' Serialize myImage
      Dim formatter As BinaryFormatter = New BinaryFormatter()
      Dim ms As MemoryStream = New MemoryStream()
      formatter.Serialize(ms, myImage)

      ' dispose myImage
      myImage.Dispose()
      myImage = Nothing

      ' Deserialize back from the stream
      ms.Position = 0
         myImage = CType(formatter.Deserialize(ms), MyRasterImage)

      msg = String.Format("After serialization.  MyIntegerData = {0}, MyStringData = {1}", myImage.MyIntegerData, myImage.MyStringData)
      MessageBox.Show(msg)

      ' re-save the image
      codecs.Save(myImage, Path.Combine(LEAD_VARS.ImagesDir, "Image1_MySerialized.bmp"), RasterImageFormat.Bmp, 24)

      ' Clean up
      ms.Close()
      myImage.Dispose()
      codecs.Dispose()
   End Sub

Public NotInheritable Class LEAD_VARS
   Public Const ImagesDir As String = "C:\Users\Public\Documents\LEADTOOLS Images"
End Class

public void MyRasterImageSerializationTest()
   {
      // Load an image
      RasterCodecs codecs = new RasterCodecs();

      RasterImage img = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, "Image1.cmp"));

      // create a new MyRasterImage instance out of this image
      MyRasterImage myImage = new MyRasterImage(img);

      // Set our custom data
      myImage.MyIntegerData = 10;
      myImage.MyStringData = "My string";
      string msg = string.Format("Before serialization.  MyIntegerData = {0}, MyStringData = {1}", myImage.MyIntegerData, myImage.MyStringData);
      MessageBox.Show(msg);

      // img is invalid now and should be disposed
      img.Dispose();

      // Serialize myImage
      BinaryFormatter formatter = new BinaryFormatter();
      MemoryStream ms = new MemoryStream();
      formatter.Serialize(ms, myImage);

      // dispose myImage
      myImage.Dispose();
      myImage = null;

      // Deserialize back from the stream
      ms.Position = 0;
      myImage = formatter.Deserialize(ms) as MyRasterImage;

      msg = string.Format("After serialization.  MyIntegerData = {0}, MyStringData = {1}", myImage.MyIntegerData, myImage.MyStringData);
      MessageBox.Show(msg);

      // re-save the image
      codecs.Save(myImage, Path.Combine(LEAD_VARS.ImagesDir, "Image1_MySerialized.bmp"), RasterImageFormat.Bmp, 24);

      // Clean up
      ms.Close();
      myImage.Dispose();
      codecs.Dispose();
   }

static class LEAD_VARS
{
   public const string ImagesDir = @"C:\Users\Public\Documents\LEADTOOLS Images";
}

Target Platforms: Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

Reference

RasterImage Class
RasterImage Members
Overload List