←Select platform

HttpClientLeadStream Class

ILeadStream support for streaming data in URLs.

public class HttpClientLeadStream : LeadStream 
Public Class HttpClientLeadStream 
   Inherits LeadStream 


HttpClientLeadStream adds ILeadStream support for streaming data in URLs.

HttpClientLeadStream uses .NET System.Net.HttpClient to open a stream to the URI. The object is created internally automatically and then is by the Open method.

The HttpClient object can be accessed through the HttpClient static property to modify or customize its options.

The value of IsOpen is set to false initially until the Open method is called.

When Open is called, the object will try to read content type (media type) of the data in the URL from the HTTP headers. If the value is available, it will be set in HttpClientLeadStream.ContentType and the value of HttpClientLeadStream.HasContentType will be set to true. If the value is not available, then HttpClientLeadStream.ContentType will be null and HttpClientLeadStream.HasContentType will be set to false. For instance, if the data in the URL is pointing to a JPEG file (such as http://example.org/file.jpg), then ContentType will be "image/jpeg".

Refer to RasterCodecs Async Operations for more information and examples.


For .NET Framework: A reference to the Leadtools.Async.dll assembly is required to use this functionality.

For .NET Standard: This functionality is included in the Leadtools.dll assembly.

Target Platforms

Help Version 20.0.2020.4.2
Products | Support | Contact Us | Intellectual Property Notices
© 1991-2020 LEAD Technologies, Inc. All Rights Reserved.

Leadtools Assembly