DbUpdatableDataRecord.GetBytes(Int32, Int64, Byte[], Int32, Int32) 方法
定义
检索 byte 数组形式的字段值。Retrieves the field value as a byte array.
public:
override long GetBytes(int ordinal, long dataIndex, cli::array <System::Byte> ^ buffer, int bufferIndex, int length);
public override long GetBytes (int ordinal, long dataIndex, byte[] buffer, int bufferIndex, int length);
override this.GetBytes : int * int64 * byte[] * int * int -> int64
Public Overrides Function GetBytes (ordinal As Integer, dataIndex As Long, buffer As Byte(), bufferIndex As Integer, length As Integer) As Long
参数
- ordinal
- Int32
字段的序号。The ordinal of the field.
- dataIndex
- Int64
开始复制数据的位置的索引。The index at which to start copying data.
- buffer
- Byte[]
将数据复制到其中的目标缓冲区。The destination buffer where data is copied.
- bufferIndex
- Int32
目标缓冲区中开始复制的位置的索引。The index in the destination buffer where copying will begin.
- length
- Int32
要复制的字节数。The number of bytes to copy.
返回
已复制的字节数。The number of bytes copied.