ASCIIEncoding.GetByteCount Method (Char*, Int32)
Calculates the number of bytes produced by encoding a set of characters starting at the specified character pointer.
Assembly: mscorlib (in mscorlib.dll)
[CLSCompliantAttribute(false)] [ComVisibleAttribute(false)] public override int GetByteCount( char* chars, int count )
Parameters
- chars
- Type: System.Char*
A pointer to the first character to encode.
- count
- Type: System.Int32
The number of characters to encode.
| Exception | Condition |
|---|---|
| ArgumentNullException |
chars is null. |
| ArgumentOutOfRangeException |
count is less than zero. -or- The resulting number of bytes is greater than the maximum number that can be returned as an integer. |
| EncoderFallbackException |
A fallback occurred (see Character Encoding in the .NET Framework for complete explanation) -and- EncoderFallback is set to EncoderExceptionFallback. |
To calculate the exact array size required by GetBytes to store the resulting bytes, the application uses GetByteCount. To calculate the maximum array size, the application should use GetMaxByteCount. The GetByteCount method generally allows allocation of less memory, while the GetMaxByteCount method generally executes faster.
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SecurityCriticalAttribute
Requires full trust for the immediate caller. This member cannot be used by partially trusted or transparent code.
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.
