Assembly: System.Data.SqlServerCe (in system.data.sqlserverce.dll)
public override long GetBytes ( int ordinal, long dataIndex, byte buffer, int bufferIndex, int length )
public long GetBytes ( int ordinal, long dataIndex, byte buffer, int bufferIndex, int length )
public override function GetBytes ( ordinal : int, dataIndex : long, buffer : byte, bufferIndex : int, length : int ) : long
The zero-based column ordinal.
The index within the field from which to begin the read operation.
The buffer into which to read the stream of bytes.
The index for buffer to begin the read operation.
The maximum length to copy into the buffer.
Return ValueThe actual number of bytes read.
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, when the SqlCeDataReader is reading a large data structure into a buffer. For more information, see the SequentialAccess setting for CommandBehavior.
If you pass a buffer that is a null reference (Nothing in Visual Basic), GetBytes returns the length of the field in bytes.
No conversions are performed; therefore, the data retrieved must already be a byte array.