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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 System.Data.dll)

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

Parameters

i
Type: System.Int32

The zero-based column ordinal.

fieldOffset
Type: System.Int64

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

buffer
Type: System.Byte[]

The buffer into which to read the stream of bytes.

bufferoffset
Type: System.Int32

The index for buffer to start the read operation.

length
Type: System.Int32

The number of bytes to read.

Return Value

Type: System.Int64
The actual number of bytes read.

ExceptionCondition
IndexOutOfRangeException

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 null, GetBytes returns the length of the row in bytes.

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

Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98, Windows CE, Windows Mobile for Smartphone, Windows Mobile for Pocket PC, Xbox 360, Zune

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

.NET Framework

Supported in: 3.5, 3.0, 2.0, 1.1, 1.0

.NET Compact Framework

Supported in: 3.5, 2.0, 1.0

XNA Framework

Supported in: 3.0, 2.0, 1.0

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