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Load(Uri) Method
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Leadtools.Codecs Namespace > RasterCodecs Class > Load Method : Load(Uri) Method




uri
The Uri containing the input image data.
Loads the specified image file using default options.

Syntax

Visual Basic (Declaration) 
Overloads Public Function Load( _
   ByVal uri As Uri _
) As RasterImage
Visual Basic (Usage)Copy Code
Dim instance As RasterCodecs
Dim uri As Uri
Dim value As RasterImage
 
value = instance.Load(uri)
C# 
public RasterImage Load( 
   Uri uri
)
Managed Extensions for C++ 
public: RasterImage Load( 
   Uri uri
)
C++/CLI 
public:
RasterImage Load( 
   Uri uri
)

Parameters

uri
The Uri containing the input image data.

Return Value

The RasterImage object that this method loads.

Example

Visual BasicCopy Code
RasterCodecs.Load(Uri)
      Public Sub LoadUri1Example()
         RasterCodecs.Startup()
         Dim codecs As New RasterCodecs()

         Dim uri As New Uri("http://www.leadtools.com/images/15-homepg-banner.jpg")
         Dim image As RasterImage = codecs.Load(uri)

         ' Show information about tha image
         Console.WriteLine("Size: {0} by {1} pixels", image.Width, image.Height)
         Console.WriteLine("Bits/Pixel: {0}", image.BitsPerPixel)
         image.Dispose()

         ' Clean up
         codecs.Dispose()
         RasterCodecs.Shutdown()
      End Sub
C#Copy Code
RasterCodecs.Load(Uri) 
      public void LoadUri1Example() 
      { 
         RasterCodecs.Startup(); 
         RasterCodecs codecs = new RasterCodecs(); 
 
         Uri uri = new Uri(@"http://www.leadtools.com/images/15-homepg-banner.jpg"); 
         RasterImage image = codecs.Load(uri); 
 
         // Show information about tha image 
         Console.WriteLine("Size: {0} by {1} pixels", image.Width, image.Height); 
         Console.WriteLine("Bits/Pixel: {0}", image.BitsPerPixel); 
         image.Dispose(); 
 
         // Clean up 
         codecs.Dispose(); 
         RasterCodecs.Shutdown(); 
      }

Remarks

The file can be in any supported image file format and bits per pixel, whether compressed or uncompressed.

This method will load all the pages in a multipage file. The resulting image will have the same bits/pixel and color order value of the image as it was stored in the file.

LEADTOOLS will attempt to load corrupted files, so you can see at least a portion of the image. For these images, the load methods succeed, but LoadStatus will return an error code.

Use the CodecsLoadOptions class to set up other load options parameters before calling this method.

Support for 12 and 16-bit grayscale images is only available in the Document/Medical Imaging editions.

For supported formats, refer to Summary of All Supported Image File Formats.

LEADTOOLS loads all PDF files as Raster PDF uncompressed RasterImageFormat.RasPdf, regardless of the compression and color space used when saving the file.

LEADTOOLS supports the following URI schemes:
SchemeDescription
UriSchemeFileSpecifies that the URI is a disk file in local machine or universal naming convention (UNC) path.
UriSchemeHttpSpecifies that the URI is accessed through the Hypertext Transfer Protocol (HTTP).
UriSchemeHttpsSpecifies that the URI is accessed through the Secure Hypertext Transfer Protocol (HTTPS).
UriSchemeFtpSpecifies that the URI is accessed through the File Transfer Protocol (FTP).

If uri points to a resource in a UriSchemeHttp, UriSchemeHttps or UriSchemeFtp, then this RasterCodecs will attempt to download image data in an iterative fashion by creating a temporary buffer. The size of this buffer can be determined and changed by setting up the UriOperationBufferSize prior to calling this method.

Requirements

Target Platforms: Microsoft .NET Framework 2.0, Windows 98, Windows NT 4.0, Windows Millennium Edition, Windows 2000, Windows XP Home Edition, Windows XP Professional, Windows Server 2003 family

See Also