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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 System.Data.OracleClient.dll)

public override long GetChars(
	int i,
	long fieldOffset,
	char[] buffer2,
	int bufferoffset,
	int length
)

Parameters

i
Type: System.Int32

The zero-based column ordinal.

fieldOffset
Type: System.Int64

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

buffer2
Type: System.Char[]

The buffer into which to copy data.

bufferoffset
Type: System.Int32

The index where buffer is to begin the write operation.

length
Type: System.Int32

The number of characters to read.

Return Value

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

Implements

IDataRecord.GetChars(Int32, Int64, Char[], Int32, Int32)

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.

.NET Framework

Supported in: 4.6, 4.5, 4, 3.5, 3.0, 2.0, 1.1

Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

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

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