how to use sqlhelper

public class BusinessLogic
    {
       string name, gender, city;
       public string Name
       {
           get { return name; }
           set { name = value; }
       }
       public string Gender
       {
           get { return gender; }
           set { gender = value; }
       }
       public string City
       {
           get { return city; }
           set { city = value; }
       }
       int id;
       public int Id
       {
           get { return id; }
           set { value = id; }
       }
       public void AddEmployee()
       {
           SqlParameter[] p=new SqlParameter[4];
           p[0] = new SqlParameter("@EmployeeId", this.id);
           p[0].DbType = DbType.String;
           p[1] = new SqlParameter("@Name",this.name);
           p[1].DbType = DbType.String;
           p[2] = new SqlParameter("@Gender",this.gender);
           p[2].DbType = DbType.String;
           p[3] = new SqlParameter("@City",this.city);
       }