Npgsql MS 2.0 - char bug?

Hi,

I'm running the MS .NET 2.0 version of Npgsql (1.0RC1) with Visual Basic
2005.

My primary key (domain_id) in the "domain" table is defined as char(10).

I have the query:

UPDATE domain SET domain = :domain, last_updated_user = CURRENT_USER,
last_updated_date = NOW() WHERE domain_id = :domain_id;

And the parameters are defined as:

:domain -> Name: "domain"-> Type: varchar-> Size: 200-> sourceColumn: "domain"

:domain_id -> Name: "domain_id"   -> Type: char   -> Size: 10   -> sourceColumn: "domain_id"

That fails with the error "the UpdateCommand affected 0 of 1 rows
expected."  The same with the DeleteCommand.

If I change the parameter ":domain_id" to...

:domain_id -> Name: "domain_id"   -> Type: varchar   -> Size: 10   -> sourceColumn: "domain_id"

... it works on both.

Is this a bug, or am I missing something?

Thanks

Andy