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Devart.Common Namespace / DbDataReaderBase Class / GetBytes Method / GetBytes(String,Int64,Byte[],Int32,Int32) Method
The name of the column.
The index within the field where the read operation is to begin.
The buffer into which to read the stream of bytes.
The index where buffer is to begin the write operation.
The maximum length to copy into the buffer.

In This Topic
GetBytes(String,Int64,Byte[],Int32,Int32) Method
In This Topic
Reads a stream of bytes from the specified column offset into the buffer as an array starting at the given buffer offset.
Syntax
'Declaration
 
Public Overloads Function GetBytes( _
   ByVal name As String, _
   ByVal fieldOffset As Long, _
   ByVal buffer() As Byte, _
   ByVal bufferOffset As Integer, _
   ByVal length As Integer _
) As Long
 

Parameters

name
The name of the column.
fieldOffset
The index within the field where the read operation is to begin.
buffer
The buffer into which to read the stream of bytes.
bufferOffset
The index where buffer is to begin the write operation.
length
The maximum length to copy into the buffer.

Return Value

The actual number of bytes read.

Remarks
GetBytes returns the number of available bytes 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 GetBytes has already been used to obtain bytes from the field. This may be the case, for example, if the DbDataReaderBase is reading a large data structure into a buffer.

If you pass a buffer that is a null value, GetBytes returns the length of the field in bytes.

See Also