IDataRecord.GetBytes Method

Reads a stream of bytes from the specified column offset into the buffer as an array, starting at the given buffer offset.

Namespace: System.Data
Assembly: System.Data (in

long GetBytes (
	int i,
	long fieldOffset,
	byte[] buffer,
	int bufferoffset,
	int length
long GetBytes (
	int i, 
	long fieldOffset, 
	byte[] buffer, 
	int bufferoffset, 
	int length
function GetBytes (
	i : int, 
	fieldOffset : long, 
	buffer : byte[], 
	bufferoffset : int, 
	length : int
) : long



The zero-based column ordinal.


The index within the field from which to start the read operation.


The buffer into which to read the stream of bytes.


The index for buffer to start the read operation.


The number of bytes to read.

Return Value

The actual number of bytes read.

Exception typeCondition


The index passed was outside the range of 0 through FieldCount.

GetBytes returns the number of available bytes in the field. Frequently 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.

If you pass a buffer that is a null reference (Nothing in Visual Basic), GetBytes returns the length of the row in bytes.

No conversions are performed; therefore the data retrieved must already be a byte array.

Windows 98, Windows 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see System Requirements.

.NET Framework

Supported in: 2.0, 1.1, 1.0

.NET Compact Framework

Supported in: 2.0, 1.0