OracleDataReader.GetBytes(Int32, Int64, Byte[], Int32, Int32) Method
Definition
Important
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Reads a stream of bytes from the specified column offset into the buffer as an array, starting at the given buffer offset.
public:
virtual long GetBytes(int i, long fieldOffset, cli::array <System::Byte> ^ buffer2, int bufferoffset, int length);public:
override long GetBytes(int i, long fieldOffset, cli::array <System::Byte> ^ buffer2, int bufferoffset, int length);public long GetBytes (int i, long fieldOffset, byte[] buffer2, int bufferoffset, int length);public override long GetBytes (int i, long fieldOffset, byte[] buffer2, int bufferoffset, int length);abstract member GetBytes : int * int64 * byte[] * int * int -> int64
override this.GetBytes : int * int64 * byte[] * int * int -> int64override this.GetBytes : int * int64 * byte[] * int * int -> int64Public Function GetBytes (i As Integer, fieldOffset As Long, buffer2 As Byte(), bufferoffset As Integer, length As Integer) As LongPublic Overrides Function GetBytes (i As Integer, fieldOffset As Long, buffer2 As Byte(), bufferoffset As Integer, length As Integer) As LongParameters
- i
- Int32
The zero-based column ordinal.
- fieldOffset
- Int64
The index within the field where the read operation is to begin.
- buffer2
- Byte[]
The buffer into which to read the stream of bytes.
- bufferoffset
- Int32
The index where buffer2 is to begin the write operation.
- length
- Int32
The number of bytes to read.
Returns
The actual number of bytes read.
Implements
Remarks
GetBytes returns the number of available bytes in the field. In most cases this is the exact length of the field. However, the number returned may be less than the true length of the field if GetBytes has already been used to obtain bytes from the field. This may be the case, for example, if the OracleDataReader is reading a large data structure into a buffer. For more information, see the SequentialAccess setting of CommandBehavior.
If you pass a buffer that is a null value, GetBytes returns the length of the field in bytes.
