C# execute store procedure with in parameter,connection timeout 0 indicates no limit

//sp
use mydb;
CREATE PROCEDURE InsertIntoMtSpInStarEnd
@StartId int =1,
@EndId int =2021474638
AS
BEGIN  
    WHILE @StartId <= @EndId
    BEGIN
        DECLARE @Author varchar(100)='Author'+CAST(@StartId AS VARCHAR(10));
        DECLARE @Comment varchar(100)='Comment'+CAST(@StartId AS VARCHAR(10));
        DECLARE @Header varchar(100)='Header'+CAST(@StartId AS VARCHAR(10));
        DECLARE @Name varchar(100)='Name'+CAST(@StartId AS VARCHAR(10));
        DECLARE @ISBN varchar(100)='ISBN'+CAST(@StartId AS VARCHAR(10));
        DECLARE @Title varchar(100)='Title'+CAST(@StartId AS VARCHAR(10));
        DECLARE @Topic varchar(100)='Topic'+CAST(@StartId AS VARCHAR(10));
        DECLARE @ImgUrl varchar(100)='ImgUrl'+CAST(@StartId AS VARCHAR(10));

        INSERT INTO mt(author,comment,header,name,isbn,title,topic,imgurl) 
        VALUES (@Author, @Comment,@Header,@Name,@ISBN,@Title,@Topic,@ImgUrl);

        SET @StartId = @StartId + 1; 
    END;
END;

 

use mydb;
declare @startId as int;
declare @endId as int;
set @startId=1;
set @endId=100000;
exec InsertIntoMtSpInStarEnd @startId,@endId;

 

 

 

 

 

 

 

 

 

 

 

 

 

 

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Data.SqlClient;
using System.Data;

namespace ConsoleApp14
{
    internal class Program
    {
        static void Main(string[] args)
        {
            ExecuteSPWithInParameter(1, 100000);
            Console.ReadLine();
            Console.WriteLine("Finished!");
        }

        static void ExecuteSPWithInParameter(int startId,int endId)
        {
            try
            {
                string connStr = "Data Source=localhost;Initial Catalog=mydb;Integrated Security=True;Connection Timeout=1800";
                using (SqlConnection conn = new SqlConnection(connStr))
                {
                    conn.Open();
                    Console.WriteLine(conn.State);
                    string spName = "InsertIntoMtSpInStarEnd";
                    SqlCommand sqlCmd = new SqlCommand(spName, conn);
                    sqlCmd.CommandType = CommandType.StoredProcedure;
                    sqlCmd.Parameters.AddWithValue("@StartId", SqlDbType.Int).Value = startId;
                    sqlCmd.Parameters.AddWithValue("@EndId", SqlDbType.Int).Value = endId;
                    int spExecutedResult = sqlCmd.ExecuteNonQuery();
                    Console.WriteLine(spExecutedResult);
                }
            }
            catch (Exception ex)
            {
                Console.WriteLine(ex.Message);
            }
        }
    }
}