How to pass city using for each loop

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C#

My code as follows

The below int_city id is as follows 1,2,4,6,8,11

      int[] numbers = { 1, 2, 4, 6, 8, 11 };
           foreach (int i in numbers)
           {
               System.Console.Write("{0} ", i);
           }
 
string connectionString = ConfigurationManager.ConnectionStrings["OneTransportConnectionString"].ConnectionString;
          SqlConnection sqlConnection = new SqlConnection(connectionString);
          SqlCommand cmd = new SqlCommand();
          SqlDataReader reader;

cmd.CommandText = "select DISTINCT date_TripDate AS TripDate,traveltype.varchar_TravelTypeCode AS TripType,contactss.Value as Mobilenumber,time_TripTime AS ShiftTime,trip.int_VehicleTripID as RequestID,varchar_TravelerID AS AssociateID,(Associate_FirstName + Associate_LastName) AS AssociateName,Gender AS Gender,varchar_ProjectId AS ProjectID,varchar_ProjectName AS ProjectName,city.varchar_CityName AS City,placeee.varchar_PlaceName AS SourceArea,place.varchar_PlaceName AS DestinationArea,varchar_StatusDescription As Status,reason.varchar_ReasonDescription AS AppType"
cmd.CommandText += " from [OneC_988].[dbo].[988_Details_VehicleRequest] request"
cmd.CommandText += " join [OneC_988].[dbo].[988_Details_VehicleTrip] trip  on request.int_VehicleRequestID=trip.int_VehicleRequestID"
cmd.CommandText += "and int_CityID = " "

cmd.CommandType = CommandType.Text;
cmd.Connection = sqlConnection;
sqlConnection.Open();
 reader = cmd.ExecuteReader();
sqlConnection.Close();

in int_cityid i want to pass the below thing

int[] numbers = { 1, 2, 4, 6, 8, 11 };
           foreach (int i in numbers)
           {
               System.Console.Write(("{0} ", i);
           }

the above one is pass multiple city in the and condition.

for that how to do in asp.net using c#

What I have tried:

how to pass city using for each loop