GdPicture.NET Reference Guide
SaveAsIStream Method (GdPictureImaging)





GdPicture14 Namespace > GdPictureImaging Class : SaveAsIStream Method
GdPicture Image Identifier.
The IStream object to save the image.
A member of the DocumentFormat enumeration. Currently supported formats are:

DocumentFormatBMP.

DocumentFormatJPEG.

DocumentFormatPNG.

DocumentFormatTIFF.

DocumentFormatGIF.

DocumentFormatJ2K (JPEG2000 codestream).

DocumentFormatJP2 (JPEG2000)

DocumentFormatTARGA.

DocumentFormatEXR.

DocumentFormatWBMP.

DocumentFormatXPM.

DocumentFormatPBM.

DocumentFormatWMF.

DocumentFormatWEBP.

Compression or encoding quality to use.

For JPEG format: the parameter defines the quality between 1 (lower) and 100 (higher).

For WebP format: the parameter defines the quality between 1 (lower) and 100 (higher - lossless encoding).

For TIFF format: the parameter defines the compression scheme to be used: 1 for none, 2 for RLE, 3 for CCITT3, 4 for CCITT4, 5 for LZW, 7 for JPEG, 32946 for Deflate and 65536 for automatic compression adjustment. For more options the SaveAsTiff() method taking a Stream object as parameter can be used.

For JPEG2000 format: the parameter defines the compression rate Between [1(MaxQuality - Lossless) ... 512(Poor quality)]. Default value is 16.

For PNG format: the parameter defines the compression level Between [0(no compression - faster encoding) ... 9(max compression - slower encoding)]. Default value is 6.

For other formats use 0.

Saves a GdPicture image to an IStream. This methods can generate multipage tiff file if the input GdPicture image is an editable multipage tiff.
Syntax

Parameters

ImageID
GdPicture Image Identifier.
Stream
The IStream object to save the image.
ImageFormat
A member of the DocumentFormat enumeration. Currently supported formats are:

DocumentFormatBMP.

DocumentFormatJPEG.

DocumentFormatPNG.

DocumentFormatTIFF.

DocumentFormatGIF.

DocumentFormatJ2K (JPEG2000 codestream).

DocumentFormatJP2 (JPEG2000)

DocumentFormatTARGA.

DocumentFormatEXR.

DocumentFormatWBMP.

DocumentFormatXPM.

DocumentFormatPBM.

DocumentFormatWMF.

DocumentFormatWEBP.

EncoderParameter
Compression or encoding quality to use.

For JPEG format: the parameter defines the quality between 1 (lower) and 100 (higher).

For WebP format: the parameter defines the quality between 1 (lower) and 100 (higher - lossless encoding).

For TIFF format: the parameter defines the compression scheme to be used: 1 for none, 2 for RLE, 3 for CCITT3, 4 for CCITT4, 5 for LZW, 7 for JPEG, 32946 for Deflate and 65536 for automatic compression adjustment. For more options the SaveAsTiff() method taking a Stream object as parameter can be used.

For JPEG2000 format: the parameter defines the compression rate Between [1(MaxQuality - Lossless) ... 512(Poor quality)]. Default value is 16.

For PNG format: the parameter defines the compression level Between [0(no compression - faster encoding) ... 9(max compression - slower encoding)]. Default value is 6.

For other formats use 0.

Return Value

A member of the GdPictureStatus enumeration.
See Also

Reference

GdPictureImaging Class
GdPictureImaging Members