GetDecoder Method

Encoding::GetDecoder Method

When overridden in a derived class, obtains a decoder that converts an encoded sequence of bytes into a sequence of characters.

Namespace:  System.Text
Assembly:  mscorlib (in mscorlib.dll)

virtual Decoder^ GetDecoder()

Return Value

Type: System.Text::Decoder
A Decoder that converts an encoded sequence of bytes into a sequence of characters.

The Decoder::GetChars method converts sequential blocks of bytes into sequential blocks of characters, in a manner similar to the GetChars method of this class. However, a Decoder maintains state information between calls so it correctly decodes byte sequences that span blocks. The Decoder also preserves trailing bytes at the end of data blocks and uses the trailing bytes in the next decoding operation. Therefore, GetDecoder and GetEncoder are useful for network transmission and file operations, because those operations often deal with blocks of data instead of a complete data stream.

Notes to Implementers

The default implementation returns a Decoder that calls the GetCharCount and GetChars methods of the current Encoding. Your application must override this method to return a Decoder that maintains its state between calls.

.NET Framework

Supported in: 4, 3.5, 3.0, 2.0, 1.1, 1.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Portable Class Library

Supported in: Portable Class Library

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

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