> Just want to know, how i writes in statement string, the parameters...
>
> ":parN" or "?"

Using ? will always work.
Using : depends on what your ParamChar property is set to. It defaults to :
so if you never mess with it you can actually use both.

Keep in mind, the only character the server recognizes on the raw statements
set to it is ? without any parameter names. The server only looks for a
question mark and does nothing to respect any parameter names.

IBO is insulating you from the primitiveness of the server in this area.

Jason Wharton