How do I return a value to a sqldatareader if value is null? asp net c#

int CountryId;

SqlDataReader reader = ...........
 

if (reader.HasRows)
{
 reader.Read();
 CountryId = reader.GetInt16(reader.GetOrdinal("CountryId"));
 

But if CountryId is null it will throw an exception so use safe method

CountryId = !string.IsNullOrWhiteSpace(reader["CountryId"].ToString()) ? 

Convert.ToInt32(reader["CountryId"]) : -1; 

That is it