The following savePDFAsMultiplePageTIF sample illustrates how you can create a multi-page TIFF from a multi-page PDF loaded in an igDocument. In the following sample we use ImGearSavingModes to control some raster options like bit depth and scaling (to control resolution):
| C# |
Copy Code |
using System.IO;
using ImageGear.Core;
using ImageGear.Formats;
using ImageGear.Formats.PDF;
public void savePDFAsMultiplePageTIF(ImGearDocument igDocument, string outfile)
{
// Set some raster options.
ImGearRasterSaveOptions rasterOptions = new ImGearRasterSaveOptions();
rasterOptions.BitDepth = 24;
// Set scaling factor for rasterized image. Scale = 1 (default) corresponds to 72 dpi, 2 to 144 dpi, etc.
rasterOptions.ScaleX = 4;
rasterOptions.ScaleY = 4;
// Save to TIF file.
using (FileStream fileStream = new FileStream(outfile, FileMode.OpenOrCreate, FileAccess.ReadWrite))
{
ImGearFileFormats.SaveDocument(igDocument, fileStream, 0, ImGearSavingModes.OVERWRITE, ImGearSavingFormats.TIF_DEFLATE, rasterOptions);
}
} |
| VB.NET |
Copy Code |
Public Sub savePDFAsMultiplePageTIF(igDocument As ImGearDocument, outfile As String)
' Set some raster options.
Dim rasterOptions As New ImGearRasterSaveOptions()
rasterOptions.BitDepth = 24
' Set scaling factor for rasterized image. Scale 1 (default) corresponds to 72 dpi, 2 to 144 dpi, etc.
'rasterOptions.ScaleX = 4;
'rasterOptions.ScaleY = 4;
' Save to TIF file.
Using fileStream As New FileStream(outfile, FileMode.OpenOrCreate, FileAccess.ReadWrite)
ImGearFileFormats.SaveDocument(igDocument, fileStream, 0, ImGearSavingModes.OVERWRITE, ImGearSavingFormats.TIF_DEFLATE, rasterOptions)
End Using
End Sub |
In the following sample we use an alternative approach to the one above that uses global control parameters to control some raster options like bit depth and resolution:
| C# |
Copy Code |
using System.IO;
using ImageGear.Core;
using ImageGear.Formats;
using ImageGear.Formats.PDF;
public void savePDFAsMultiplePageTIF(ImGearDocument igDocument, string outfile)
{
// Change global control parameters for PDF resolution. ImGearSaveOptions in SaveDocument should be set to null.
IImGearFormat pdfFilter = ImGearFileFormats.Filters.Get(ImGearFormats.PDF);
ImGearControlParameter bitDepth = pdfFilter.Parameters.GetByName("Depth");
ImGearControlParameter resolutionX = pdfFilter.Parameters.GetByName("ResolutionX");
ImGearControlParameter resolutionY = pdfFilter.Parameters.GetByName("ResolutionY");
bitDepth.Value = 24;
resolutionX.Value = 300;
resolutionY.Value = 300;
// Save to TIF file.
using (FileStream fileStream = new FileStream(outfile, FileMode.OpenOrCreate, FileAccess.ReadWrite))
{
ImGearFileFormats.SaveDocument(igDocument, fileStream, 0, ImGearSavingModes.OVERWRITE, ImGearSavingFormats.TIF_DEFLATE, null);
}
} |
| VB.NET |
Copy Code |
Public Sub savePDFAsMultiplePageTIF2(igDocument As ImGearDocument, outfile As String)
' Change global control parameters for PDF resolution. ImGearSaveOptions in SaveDocument should be set to null.
Dim pdfFilter As IImGearFormat = ImGearFileFormats.Filters.[Get](ImGearFormats.PDF)
Dim bitDepth As ImGearControlParameter = pdfFilter.Parameters.GetByName("Depth")
Dim resolutionX As ImGearControlParameter = pdfFilter.Parameters.GetByName("ResolutionX")
Dim resolutionY As ImGearControlParameter = pdfFilter.Parameters.GetByName("ResolutionY")
bitDepth.Value = 24
resolutionX.Value = 300
resolutionY.Value = 300
' Save to TIF file.
Using fileStream As New FileStream(outfile, FileMode.OpenOrCreate, FileAccess.ReadWrite)
ImGearFileFormats.SaveDocument(igDocument, fileStream, 0, ImGearSavingModes.OVERWRITE, ImGearSavingFormats.TIF_DEFLATE, Nothing)
End Using
End Sub |
