Encoder Class
Definition
Important
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An Encoder object encapsulates a globally unique identifier (GUID) that identifies the category of an image encoder parameter.
public ref class Encoder sealedpublic sealed class Encodertype Encoder = classPublic NotInheritable Class Encoder- Inheritance
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Encoder
Remarks
Note
In .NET 6 and later versions, the System.Drawing.Common package, which includes this type, is only supported on Windows operating systems. Use of this type in cross-platform apps causes compile-time warnings and run-time exceptions. For more information, see System.Drawing.Common only supported on Windows.
When you pass a parameter to an image encoder, the parameter is encapsulated in an EncoderParameter object. One of the fields of the EncoderParameter object is a GUID that specifies the category of the parameter. Use the static fields of the Encoder class to retrieve an Encoder that contains parameters of the desired category.
The image encoders that are built into GDI+ receive parameters that belong to several categories. The following table lists all the categories and the GUID associated with each category.
| Category | GUID |
|---|---|
| ChrominanceTable | f2e455dc-09b3-4316-8260-676ada32481c |
| ColorDepth | 66087055-ad66-4c7c-9a18-38a2310b8337 |
| Compression | e09d739d-ccd4-44ee-8eba-3fbf8be4fc58 |
| LuminanceTable | edb33bce-0266-4a77-b904-27216099e717 |
| Quality | 1d5be4b5-fa4a-452d-9cdd-5db35105e7eb |
| RenderMethod | 6d42c53a-229a-4825-8bb7-5c99e2b9a8b8 |
| SaveFlag | 292266fc-ac40-47bf-8cfc-a85b89a655de |
| ScanMethod | 3a4e2661-3109-4e56-8536-42c156e7dcfa |
| Transformation | 8d0eb2d1-a58e-4ea8-aa14-108074b7b6f9 |
| Version | 24d18c76-814a-41a4-bf53-1c219cccf797 |
Constructors
| Encoder(Guid) |
Initializes a new instance of the Encoder class from the specified globally unique identifier (GUID). The GUID specifies an image encoder parameter category. |
Fields
| ChrominanceTable |
An Encoder object that is initialized with the globally unique identifier for the chrominance table parameter category. |
| ColorDepth |
An Encoder object that is initialized with the globally unique identifier for the color depth parameter category. |
| ColorSpace |
Represents an encoder that's initialized with the globally unique identifier for the color space category. |
| Compression |
An Encoder object that is initialized with the globally unique identifier for the compression parameter category. |
| ImageItems |
Represents an encoder that's initialized with the globally unique identifier for the image items category. |
| LuminanceTable |
Represents an Encoder object that is initialized with the globally unique identifier for the luminance table parameter category. |
| Quality |
Gets an Encoder object that is initialized with the globally unique identifier for the quality parameter category. |
| RenderMethod |
Represents an Encoder object that is initialized with the globally unique identifier for the render method parameter category. |
| SaveAsCmyk |
Represents an encoder that's initialized with the globally unique identifier for the save as CMYK category. |
| SaveFlag |
Represents an Encoder object that is initialized with the globally unique identifier for the save flag parameter category. |
| ScanMethod |
Represents an Encoder object that is initialized with the globally unique identifier for the scan method parameter category. |
| Transformation |
Represents an Encoder object that is initialized with the globally unique identifier for the transformation parameter category. |
| Version |
Represents an Encoder object that is initialized with the globally unique identifier for the version parameter category. |
Properties
| Guid |
Gets a globally unique identifier (GUID) that identifies an image encoder parameter category. |
Methods
| Equals(Object) |
Determines whether the specified object is equal to the current object. (Inherited from Object) |
| GetHashCode() |
Serves as the default hash function. (Inherited from Object) |
| GetType() |
Gets the Type of the current instance. (Inherited from Object) |
| MemberwiseClone() |
Creates a shallow copy of the current Object. (Inherited from Object) |
| ToString() |
Returns a string that represents the current object. (Inherited from Object) |
