Hi Axum,
See
http://code.google.com/p/google-api-adwords-dotnet/source/browse/trunk/Examples/v201003/UpdateAdGroupCriterion.cs
for an example on how the bids of a criterion can be updated. Also,
criterionId can be obtained from the criterion object as criterion.id.
See
http://code.google.com/p/g
I have looked at the code samples. I can loop through an adgroup
keyword list and see the bid:
foreach (AdGroupCriterion adGroupCriterion in
adGroupCriterionPage.entries)
{
if (adGroupCriterion.criterion is Keyword)
{