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OracleBFile.CopyTo Method (Int64, OracleLob, Int64, Int64)

Copies from this OracleBFile to a destination OracleLob with the specified amount of data, the source offset, and the destination offset.

Namespace:  System.Data.OracleClient
Assembly:  System.Data.OracleClient (in System.Data.OracleClient.dll)

public long CopyTo(
	long sourceOffset,
	OracleLob destination,
	long destinationOffset,
	long amount


Type: System.Int64

The offset from which to copy.

Type: System.Data.OracleClient.OracleLob

The destination OracleLob.

Type: System.Int64

The offset to which to copy.

Type: System.Int64

The quantity of data, in bytes, to copy.

Return Value

Type: System.Int64
The number of bytes copied.


The value of the amount parameter is less than zero or greater than 4 gigabytes.


The destination OracleLob is a null object reference.


The destination is a null OracleLob.


The connection with which this OracleBFile is associated is closed.


The OracleBFile object is closed or disposed.

The underlying data types of the source OracleBFile and the destination OracleLob must be compatible. For example, you cannot copy binary data to a destination OracleLob that has a character data type.

You must have write access to the destination OracleLob for the CopyTo operation to execute correctly.

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

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