ActiveReports 12
Dither Property (TiffExport)
Example 

GrapeCity.ActiveReports.Export.Image.v12 Assembly > GrapeCity.ActiveReports.Export.Image.Tiff.Section Namespace > TiffExport Class : Dither Property
Specifies whether the image should be dithered when saving to a black and white output format such as Ccitt4, Ccitt3 or Rle. If the CompressionScheme is set to Lzw or None (indicating color output) this property has no effect.
Syntax
'Declaration
 
Public Property Dither As Boolean
public bool Dither {get; set;}

Property Value

Boolean.  The default value is False.
Example
private void btnExport_Click(Object sender, System.EventArgs e)
{
    rptGrapeCity rpt = new rptGrapeCity();
    GrapeCity.ActiveReports.Export.Image.Tiff.Section.TiffExport t = new GrapeCity.ActiveReports.Export.Image.Tiff.Section.TiffExport();
    rpt.Run();
    this.arv.Document = rpt.Document;
    t.CompressionScheme = GrapeCity.ActiveReports.Export.Image.Tiff.Section.CompressionScheme.Ccitt3;
    t.Dither = True;
    t.Export(rpt.Document, Application.StartupPath + "\\t.tiff","1-2");
}
Private Sub btnExport_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnExport.Click
    Dim rpt As New SectionReport
    Dim t As New GrapeCity.ActiveReports.Export.Image.Tiff.Section.TiffExport
    rpt.Run()
    Me.Viewer1.Document = rpt.Document
    t.CompressionScheme = GrapeCity.ActiveReports.Export.Image.Tiff.Section.CompressionScheme.Ccitt3
    t.Dither = True
    t.Export(rpt.Document, Application.StartupPath & "\t.tiff")
End Sub
See Also

Reference

TiffExport Class
TiffExport Members