Encoding::GetByteCount Method (array<Char>, Int32, Int32)
When overridden in a derived class, calculates the number of bytes produced by encoding a set of characters from the specified character array.
Namespace: System.Text
Assembly: mscorlib (in mscorlib.dll)
Parameters
- chars
- Type: array<System::Char>
The character array containing the set of characters to encode.
- index
- Type: System::Int32
The zero-based index of the first character to encode.
- count
- Type: System::Int32
The number of characters to encode.
| Exception | Condition |
|---|---|
| ArgumentNullException | chars is nullptr. |
| ArgumentOutOfRangeException | index or count is less than zero. -or- index and count do not denote a valid range in chars. |
| EncoderFallbackException | A fallback occurred (see Understanding Encodings for complete explanation). |
To calculate the exact array size required by GetBytes to store the resulting bytes, the application should use GetByteCount. To calculate the maximum array size, the application should use GetMaxByteCount. The GetByteCount method generally allocates less memory, while the GetMaxByteCount method generally executes faster.
For a discussion of programming considerations for use of this method, see the Encoding class description.
For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.