c#, SQL Server, Proc

In c#, I have
country ="USA"    and  population = 330,000,000
List<City> cityList                     includes multiple city objects Los Angele, CA
                                                                                                        San Diego, CA
                                                                                                        Dallas, TX

I need a proc to write USA, 330,000,000 to CountryTable, get CountryID and then use it as FK in CityTable to enter:
Los Angele, CA
San Diego, CA
Dallas, TX

Question: How cityList  could be passed to the proc?

Do I need to declare a dataset (ds) which can have a datatable (dt) added to it and populated with the cityList first in order to be passed to the proc? I am not sure if this is the way to do it. If it is, could you please show me how this code should be done?

There will be a few more followup questions to complete the entire process.
LVL 34
Mike EghtebasDatabase and Application DeveloperAsked:
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Mike EghtebasDatabase and Application DeveloperAuthor Commented:
Very useful links.

Thank you
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