ActiveReports Developer 7
CompressionScheme Property
See Also  Example
GrapeCity.ActiveReports.Export.Image.v7 Assembly > GrapeCity.ActiveReports.Export.Image.Tiff.Section Namespace > TiffExport Class : CompressionScheme Property

Glossary Item Box

Sets or returns a value which specifies the compression scheme to be used when exporting a TIFF file.


Visual Basic (Declaration) 
Public Property CompressionScheme As CompressionScheme
public CompressionScheme CompressionScheme {get; set;}

Property Value

CompressionScheme enumeration.


The default value for CompressionScheme is Ccitt3, which can be used for 1 color depth, the old standard for faxes.  Another enumeration of this property which will produce black and white TIFF files are Ccitt4 and RLE, or run-length encoding. 

To export color TIFF files, set the CompressionScheme to None.  There is also a new Lzw compression scheme.  The new scheme provides a lossless color export for 1, 4 and 8 bit color depths with a smaller footprint, and is based on the Unisys patent on Lzw compression.


Visual BasicCopy Code
Dim rpt As New SectionReport1()
Me.tiffExport1.CompressionScheme = GrapeCity.ActiveReports.Export.Image.Tiff.Section.CompressionScheme.None
'Setting the CompressionScheme to None allows colors to be exported
Me.tiffExport1.Export(rpt.Document, Application.StartupPath & "\t.tiff")
C#Copy Code
SectionReport1 rpt = new SectionReport1();
this.tiffExport1.CompressionScheme = GrapeCity.ActiveReports.Export.Image.Tiff.Section.CompressionScheme.None;
//Setting the CompressionScheme to None allows colors to be exported
this.tiffExport1.Export(rpt.Document, Application.StartupPath + "\\t.tiff");

See Also


TiffExport Class
TiffExport Members
CompressionScheme Enumeration