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Decoder.GetCharCount Method (Byte*, Int32, Boolean)

When overridden in a derived class, calculates the number of characters produced by decoding a sequence of bytes starting at the specified byte pointer. A parameter indicates whether to clear the internal state of the decoder after the calculation.

This API is not CLS-compliant. 

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

[CLSCompliantAttribute(false)]
[ComVisibleAttribute(false)]
public virtual int GetCharCount(
	byte* bytes,
	int count,
	bool flush
)

Parameters

bytes
Type: System.Byte*

A pointer to the first byte to decode.

count
Type: System.Int32

The number of bytes to decode.

flush
Type: System.Boolean

true to simulate clearing the internal state of the encoder after the calculation; otherwise, false.

Return Value

Type: System.Int32
The number of characters produced by decoding the specified sequence of bytes and any bytes in the internal buffer.

ExceptionCondition
ArgumentNullException

bytes is null (Nothing in Visual Basic .NET).

ArgumentOutOfRangeException

count is less than zero.

DecoderFallbackException

A fallback occurred (see Understanding Encodings for fuller explanation)

-and-

Fallback is set to DecoderExceptionFallback.

This method does not affect the state of the decoder.

To calculate the exact array size that GetChars requires to store the resulting characters, the application should use GetCharCount.

If GetChars is called with flush set to false, the decoder stores trailing bytes at the end of the data block in an internal buffer and uses them in the next decoding operation. The application should call GetCharCount on a block of data immediately before calling GetChars on the same block, so that any trailing bytes from the previous block are included in the calculation.

Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98, Windows CE, Windows Mobile for Smartphone, Windows Mobile for Pocket PC, Xbox 360, Zune

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

.NET Framework

Supported in: 3.5, 3.0, 2.0

.NET Compact Framework

Supported in: 3.5, 2.0

XNA Framework

Supported in: 3.0, 2.0, 1.0

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