ImageGear for .NET
Using Filter Control Parameters

Many format filters in ImageGear have control parameters that effect filter operations, such as image reading and writing. Those parameters may be declared by the format specification, or they may be specific to the format implementation by ImageGear.

There are two ways to specify filter control parameters:

The following example sets a global control parameter: 

C#
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IImGearFormat JpgFormat = ImGearFileFormats.Filters.Get(ImGearFormats.JPG);
ImGearControlParameter Param = JpgFormat.Parameters.GetByName("SaveType");
Param.Value = 1; // Lossless
using (FileStream fsWrite = File.Open("Test.jpg", FileMode.Create, FileAccess.ReadWrite, FileShare.None))
 ImGearFileFormats.SavePage(imGearPage, fsWrite, 0, ImGearSavingModes.OVERWRITE, ImGearSavingFormats.JPG, null);

The following example sets a local control parameter:

C#
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ImGearFileFilters LocalFilters = new ImGearFileFilters();
IImGearFormat JpgFormat = LocalFilters.Get(ImGearFormats.JPG);
ImGearControlParameter Param = JpgFormat.Parameters.GetByName("SaveType");
Param.Value = 1; // Lossless
ImGearSaveOptions SaveOptions = new ImGearSaveOptions();
SaveOptions.Filters = LocalFilters;
using (FileStream fsWrite = File.Open("Test.jpg", FileMode.Create, FileAccess.ReadWrite, FileShare.None))
 ImGearFileFormats.SavePage(imGearPage, fsWrite, 0, ImGearSavingModes.OVERWRITE, ImGearSavingFormats.JPG, SaveOptions);

 

 

 


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