Public Overloads 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)

public RasterImage Load( 
   Uri uri
)

public:
RasterImage Load( 
   Uri uri
) 

Parameters

uri

The Uri containing the input image data.

Return Value

This example will load an image from a uri

Visual Basic

Copy Code

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#

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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();  }

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:

Scheme	Description
UriSchemeFile	Specifies that the URI is a disk file in local machine or universal naming convention (UNC) path.
UriSchemeHttp	Specifies that the URI is accessed through the Hypertext Transfer Protocol (HTTP).
UriSchemeHttps	Specifies that the URI is accessed through the Secure Hypertext Transfer Protocol (HTTPS).
UriSchemeFtp	Specifies 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.

For authentical and proxy settings, refer to UriOperationCredentials and UriOperationProxy.

Target Platforms: Microsoft .NET Framework 3.0, Windows XP, Windows Server 2003 family, Windows Server 2008 family

Reference