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SvgDocument Constructor

Summary

This constructor is required by System.Runtime.Serialization.ISerializable

Syntax
C#
VB
C++
protected SvgDocument( 
   SerializationInfo info, 
   StreamingContext context 
) 
Protected Function New( _ 
   ByVal info As SerializationInfo, _ 
   ByVal context As StreamingContext _ 
) 
protected: 
SvgDocument(  
   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.

Remarks

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

When you serialize a SvgDocument object, all the data inside the object is saved. The SvgDocument can be reconstructed back to its original state from the stream.

Example

This example will show how to serialize and deserialize a SVG document.

C#
VB
using Leadtools; 
using Leadtools.Codecs; 
using Leadtools.Drawing; 
using Leadtools.Forms.DocumentWriters; 
using Leadtools.Svg; 
using LeadtoolsExamples.Common; 
 
public void SvgDocumentSerializationExample() 
{ 
   SvgDocument document = null; 
 
   // Load a page from a document file as SVG 
   string srcFileName = Path.Combine(ImagesPath.Path, "Leadtools.pdf"); 
 
   using (var codecs = new RasterCodecs()) 
   { 
      // Set 300 as the default value for loading document files 
      codecs.Options.RasterizeDocument.Load.Resolution = 300; 
 
      document = codecs.LoadSvg(srcFileName, 1, null) as SvgDocument; 
   } 
 
   // Prepare it 
   if (!document.IsFlat) 
      document.Flat(null); 
   if (!document.Bounds.IsValid) 
      document.CalculateBounds(false); 
 
   // Show its properties 
   Console.WriteLine("Before serialization"); 
   Console.WriteLine("Bounds: " + document.Bounds.Bounds); 
   Console.WriteLine("Resolution: " + document.Bounds.Resolution); 
 
   // Serialize (save) it to a stream 
   var stream = new MemoryStream(); 
   var formatter = new BinaryFormatter(); 
   formatter.Serialize(stream, document); 
   stream.Position = 0; 
 
   // Get rid of the document 
   document.Dispose(); 
 
   // Now de-serailize (load) it back from the stream and show its properties 
   document = formatter.Deserialize(stream) as SvgDocument; 
   Console.WriteLine("After de-serialization"); 
   Console.WriteLine("Bounds: " + document.Bounds.Bounds); 
   Console.WriteLine("Resolution: " + document.Bounds.Resolution); 
 
   document.Dispose(); 
} 
Imports Leadtools 
Imports Leadtools.Codecs 
Imports Leadtools.Drawing 
Imports Leadtools.Forms.DocumentWriters 
Imports Leadtools.Svg 
 
Public Shared Sub SvgDocumentSerializationExample() 
   Dim document As SvgDocument = Nothing 
 
   ' Load a page from a document file as SVG 
   Dim srcFileName As String = Path.Combine(Common.ImagesPath.Path, "Leadtools.pdf") 
   Using codecs As New RasterCodecs() 
      ' Set 300 as the default value for loading document files 
      codecs.Options.RasterizeDocument.Load.Resolution = 300 
 
      document = DirectCast(codecs.LoadSvg(srcFileName, 1, Nothing), SvgDocument) 
   End Using 
 
   ' Prepare it 
   If Not document.IsFlat Then 
      document.Flat(Nothing) 
   End If 
   If Not document.Bounds.IsValid Then 
      document.CalculateBounds(False) 
   End If 
 
   ' Show its properties 
   Console.WriteLine("Before serialization") 
   Console.WriteLine("Bounds: " + document.Bounds.Bounds.ToString()) 
   Console.WriteLine("Resolution: " + document.Bounds.Resolution.ToString()) 
 
   ' Serialize (save) it to a stream 
   Dim stream As New MemoryStream() 
   Dim formatter As New BinaryFormatter() 
   formatter.Serialize(stream, document) 
   stream.Position = 0 
 
   ' Get rid of the document 
   document.Dispose() 
 
   ' Now de-serailize (load) it back from the stream and show its properties 
   document = DirectCast(formatter.Deserialize(stream), SvgDocument) 
   Console.WriteLine("After de-serialization") 
   Console.WriteLine("Bounds: " + document.Bounds.Bounds.ToString()) 
   Console.WriteLine("Resolution: " + document.Bounds.Resolution.ToString()) 
 
   document.Dispose() 
End Sub 

Requirements

Target Platforms

Help Version 20.0.2019.9.19
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Leadtools.Svg Assembly