←Select platform

LoadSvgAsync(Stream,int,CodecsLoadSvgOptions,object) Method


Loads a page from a stream containing an image, document or vector file as SVG asynchronously.

public void LoadSvgAsync( 
   Stream stream, 
   int pageNumber, 
   CodecsLoadSvgOptions options, 
   object userState 
Public Overloads Sub LoadSvgAsync( _ 
   ByVal stream As Stream, _ 
   ByVal pageNumber As Integer, _ 
   ByVal options As CodecsLoadSvgOptions, _ 
   ByVal userState As Object _ 
- (void)loadSvgStreamAsync:(LTLeadStream *)stream  
                   options:(nullable LTCodecsLoadSvgOptions *)options  
                completion:(void (^)(id<ISvgDocument> __nullable svgDocument, NSError * __nullable error))completion 
public Object loadSvgAsync( 
   ILeadStream stream,  
   int pageNumber,  
   CodecsLoadSvgOptions options,  
   Object userState 
void LoadSvgAsync(  
   Stream^ stream, 
   int pageNumber, 
   CodecsLoadSvgOptions^ options, 
   Object^ userState 


The stream containing the image data to load.

The 1-based page number.

The options used for loading SVG. This can be null.

A user-defined object that is passed to the method invoked when the asynchronous operation completes.


NOTE: This topic is part of RasterCodecs Async support using the .NET System.ComponentMode.AsyncOperation model. For .NET async/await, use Task<ISvgDocument> LoadSvgAsync(ILeadStream stream, int pageNumber, CodecsLoadSvgOptions options).

Use this method to load a page from any supported image, document or vector file as SVG (Scalable Vector Graphics). For more information refer LoadSvg(string fileName, int pageNumber, CodecsLoadSvgOptionsOptions).

The RasterCodecs class supports loading image data as SVG asynchronously using the LoadSvgAsync methods. When calling any of these methods, the caller thread will not be blocked and the method will return instantly. When the RasterCodecs object finishes loading the SVG page (or when an error occur), the LoadSvgAsyncCompleted will occur.

The LoadSvgAsyncCompleted event data will contain the SVG page in the CodecsLoadSvgAsyncCompletedEventArgs property.

To determine whether a file or stream can be loaded as SVG, use CanLoadSvg(string fileName) or CanLoadSvg(Stream stream).

To load as SVG asynchronously from a file, use LoadSvgAsync(string fileName, int pageNumber, CodecsLoadSvgOptions options, object userState).

To load as SVG asynchronously from a URI, use LoadSvgAsync(Uri uri, int pageNumber, CodecsLoadSvgOptions options, object userState).

To load as SVG from a file or stream directly, use LoadSvg.

For more information, refer to Working With SVG.


For an example, refer to LoadSvgAsyncCompleted.


Target Platforms

Help Version 20.0.2020.4.3
Products | Support | Contact Us | Intellectual Property Notices
© 1991-2020 LEAD Technologies, Inc. All Rights Reserved.

Leadtools.Codecs Assembly