OracleDataReader.GetChars Method

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

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

Public Overrides Function GetChars ( _
	i As Integer, _
	fieldOffset As Long, _
	buffer2 As Char(), _
	bufferoffset As Integer, _
	length As Integer _
) As Long
Dim instance As OracleDataReader
Dim i As Integer
Dim fieldOffset As Long
Dim buffer2 As Char()
Dim bufferoffset As Integer
Dim length As Integer
Dim returnValue As Long

returnValue = instance.GetChars(i, fieldOffset, buffer2, bufferoffset, length)
public long GetChars (
	int i, 
	long fieldOffset, 
	char[] buffer2, 
	int bufferoffset, 
	int length
public override function GetChars (
	i : int, 
	fieldOffset : long, 
	buffer2 : char[], 
	bufferoffset : int, 
	length : int
) : long
Not applicable.



The zero-based column ordinal.


The index within the row where the read operation is to begin.


The buffer into which to copy data.


The index where buffer is to begin the write operation.


The number of characters to read.

Return Value

The actual number of characters read.

GetChars returns the number of available characters 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 GetChars has already been used to obtain characters from the field. This may be the case, for example, if the OracleDataReader is reading a large data structure into a buffer. For more information, see the SequentialAccess setting of CommandBehavior.

If you pass a buffer that is a null value. GetChars returns the length of the field in characters.

Windows 98, Windows Server 2000 SP4, Windows Millennium Edition, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.

.NET Framework

Supported in: 3.0, 2.0, 1.1