Npgsql Api Docs

NpgsqlCopyFormat.FieldIsBinary Method 

Returns true if this operation is currently active and field at given location is in binary format.

[Visual Basic]
Public Function FieldIsBinary( _
   ByVal fieldNumber As Integer _
) As Boolean
[C#]
public bool FieldIsBinary(
   int fieldNumber
);

See Also

NpgsqlCopyFormat Class | Npgsql Namespace