System.Drawing.Imaging Namespace

The System.Drawing.Imaging namespace provides advanced GDI+ imaging functionality. Basic graphics functionality is provided by the System.Drawing namespace.

Remarks

The Metafile class provides methods for recording and saving metafiles. The Encoder class enables users to extend GDI+ to support any image format. The PropertyItem class provides methods for storing and retrieving metadata in image files.

Note:

Classes within the System.Drawing.Imaging namespace are not supported for use within a Windows or ASP.NET service. Attempting to use these classes from within one of these application types may produce unexpected problems, such as diminished service performance and run-time exceptions.

Classes

TypeReason
BitmapData

Specifies the attributes of a bitmap image. The BitmapData class is used by the erload:System.Drawing.Bitmap.LockBits and Bitmap.UnlockBits(BitmapData) methods of the Bitmap class. Not inheritable.

ColorAdjustType

Specifies which GDI+ objects use color adjustment information.

ColorChannelFlag

Specifies individual channels in the CMYK (cyan, magenta, yellow, black) color space. This enumeration is used by the erload:System.Drawing.Imaging.ImageAttributes.SetOutputChannel methods.

ColorMap

Defines a map for converting colors. Several methods of the ImageAttributes class adjust image colors by using a color-remap table, which is an array of ColorMap structures. Not inheritable.

ColorMapType

Specifies the types of color maps.

ColorMatrix

Defines a 5 x 5 matrix that contains the coordinates for the RGBAW space. Several methods of the ImageAttributes class adjust image colors by using a color matrix. This class cannot be inherited.

ColorMatrixFlag

Specifies the types of images and colors that will be affected by the color and grayscale adjustment settings of an ImageAttributes.

ColorMode

Specifies two modes for color component values.

ColorPalette

Defines an array of colors that make up a color palette. The colors are 32-bit ARGB colors. Not inheritable.

EmfPlusRecordType

Specifies the methods available for use with a metafile to read and write graphic commands.

EmfType

Specifies the nature of the records that are placed in an Enhanced Metafile (EMF) file. This enumeration is used by several constructors in the Metafile class.

Encoder

An Encoder object encapsulates a globally unique identifier (GUID) that identifies the category of an image encoder parameter.

EncoderParameter

Used to pass a value, or an array of values, to an image encoder.

EncoderParameters

Encapsulates an array of EncoderParameter objects.

EncoderParameterValueType

Used to specify the data type of the EncoderParameter used with the erload:System.Drawing.Image.Save or erload:System.Drawing.Image.SaveAdd method of an image.

EncoderValue

Used to specify the parameter value passed to a JPEG or TIFF image encoder when using the Image.Save(String,ImageCodecInfo,EncoderParameters) or Image.SaveAdd(EncoderParameters) methods.

FrameDimension

Provides properties that get the frame dimensions of an image. Not inheritable.

ImageAttributes

Contains information about how bitmap and metafile colors are manipulated during rendering.

ImageCodecFlags

Provides attributes of an image encoder/decoder (codec).

ImageCodecInfo

The ImageCodecInfo class provides the necessary storage members and methods to retrieve all pertinent information about the installed image encoders and decoders (called codecs). Not inheritable.

ImageFlags

Specifies the attributes of the pixel data contained in an Image object. The Image.Flags property returns a member of this enumeration.

ImageFormat

Specifies the file format of the image. Not inheritable.

ImageLockMode

Specifies flags that are passed to the flags parameter of the erload:System.Drawing.Bitmap.LockBits method. The erload:System.Drawing.Bitmap.LockBits method locks a portion of an image so that you can read or write the pixel data.

Metafile

Defines a graphic metafile. A metafile contains records that describe a sequence of graphics operations that can be recorded (constructed) and played back (displayed). This class is not inheritable.

MetafileFrameUnit

Specifies the unit of measurement for the rectangle used to size and position a metafile. This is specified during the creation of the Metafile object.

MetafileHeader

Contains attributes of an associated Metafile. Not inheritable.

MetafileType

Specifies types of metafiles. The MetafileHeader.Type property returns a member of this enumeration.

MetaHeader

Contains information about a windows-format (WMF) metafile.

PaletteFlags

Specifies the type of color data in the system palette. The data can be color data with alpha, grayscale data only, or halftone data.

PixelFormat

Specifies the format of the color data for each pixel in the image.

PlayRecordCallback

This delegate is not used. For an example of enumerating the records of a metafile, see Graphics.EnumerateMetafile(Metafile,Point,EnumerateMetafileProc).

PropertyItem

Encapsulates a metadata property to be included in an image file. Not inheritable.

WmfPlaceableFileHeader

Defines a placeable metafile. Not inheritable.