GetBytes

This method populates the provided byte array with up to the maximum number of bytes, from the specified offset (in bytes) of the column.

Declaration

// C#
public override long GetBytes(int index, long fieldOffset, byte[] buffer, 
   int bufferOffset, int length);

Parameters

index

The zero-based column index.
fieldOffset

The offset within the column from which reading begins (in bytes).
buffer

The byte array that the data is read into.
bufferOffset

The offset within the buffer to begin reading data into (in bytes).
length

The maximum number of bytes to read (in bytes).

Return Value

The number of bytes read.

Implements

IDataRecord

Exceptions

InvalidOperationException - The connection is closed, the reader is closed, Read() has not been called, or all rows have been read.

IndexOutOfRangeException - The column index is invalid.

InvalidCastException - The accessor method is invalid for this column type or the column value is NULL.

Remarks

This method returns the number of bytes read into the buffer. This may be less than the actual length of the field if the method has been called previously for the same column.

If a null reference is passed for buffer, the length of the field in bytes is returned.

IsDBNull should be called to check for NULL values before calling this method.