UTF8Encoding.GetCharCount Method (Byte*, Int32)
Calculates the number of characters produced by decoding a sequence of bytes starting at the specified byte pointer.
This API is not CLS-compliant. Namespace: System.Text
Assembly: mscorlib (in mscorlib.dll)
[ComVisibleAttribute(false)] [CLSCompliantAttribute(false)] public override int GetCharCount( byte* bytes, int count )
- Type: System.Byte*
A pointer to the first byte to decode.
- Type: System.Int32
The number of bytes to decode.
Return ValueType: System.Int32
The number of characters produced by decoding the specified sequence of bytes.
bytes is null.
count is less than zero.
The resulting number of bytes is greater than the maximum number that can be returned as an integer.
Error detection is enabled, and bytes contains an invalid sequence of bytes.
A fallback occurred (see Character Encoding in the .NET Framework for complete explanation)
To calculate the exact array size required by GetChars to store the resulting characters, the application uses GetCharCount. To calculate the maximum array size, the application should use GetMaxCharCount. The GetCharCount method generally allows allocation of less memory, while the GetMaxCharCount method generally executes faster.
With error detection, an invalid sequence causes this method to throw a ArgumentException. Without error detection, invalid sequences are ignored, and no exception is thrown.
Requires full trust for the immediate caller. This member cannot be used by partially trusted or transparent code.
Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.