How do i create a html string that can add paramaters send that html request and store the response

foreach(var row in rows)
{
 string url = $"https://secure.crbonline.gov.uk/crsc/api/status/001536522000?dateOfBirth={row.DateOfBirth.ToString("dd/MM/yyyy")}&surname={row.surname}&hasAgreedTermsAndConditions={row.agreed}&organisationName={row.organisation}&employeeSurname=Lintern&employeeForename={row.employeeforname}";
}

foreach(var row in rows)
{
 string url = $"https://secure.crbonline.gov.uk/crsc/api/status/001536522000?dateOfBirth={row.DateOfBirth.ToString("dd/MM/yyyy")}&surname={row.surname}&hasAgreedTermsAndConditions={row.agreed}&organisationName={row.organisation}&employeeSurname=Lintern&employeeForename={row.employeeforname}";
}

c#
amespace TestApp
{
    public class DataAccess
    {
        public List<Person> GetPeople()
        {
            using (IDbConnection connection = new System.Data.SqlClient.SqlConnection(Helper.CnnVal("EclipseDB")))
            {
                var output = connection.Query<Person>($"Select DISTINCT(c.id), p.forename, p.surname, FORMAT (p.date_of_birth, 'dd/MM/yyyy ') as [DateofBirth], cc.reference [CertificateNumber] from can_candidate c JOIN gen_person p on p.id = c.person_id JOIN gen_static_codebook st on st.id = c.status_id JOIN can_compliance cc on cc.candidate_id = c.id and cc.deleted is null Where c.deleted is null and st.id = 585 and cc.name like 'Update Service' and cc.approved = 1 and not cc.reference is null").ToList();
                return output;
                  }

            
            

        }
            }
 }  

c#
amespace TestApp
{
    public class DataAccess
    {
        public List<Person> GetPeople()
        {
            using (IDbConnection connection = new System.Data.SqlClient.SqlConnection(Helper.CnnVal("EclipseDB")))
            {
                var output = connection.Query<Person>($"Select DISTINCT(c.id), p.forename, p.surname, FORMAT (p.date_of_birth, 'dd/MM/yyyy ') as [DateofBirth], cc.reference [CertificateNumber] from can_candidate c JOIN gen_person p on p.id = c.person_id JOIN gen_static_codebook st on st.id = c.status_id JOIN can_compliance cc on cc.candidate_id = c.id and cc.deleted is null Where c.deleted is null and st.id = 585 and cc.name like 'Update Service' and cc.approved = 1 and not cc.reference is null").ToList();
                return output;
                  }

            
            

        }
            }
 }  

var sb = new StringBuilder("https://secure.crbonline.gov.uk/crsc/api/status/001536522000?");
            sb.Append("dateOfBirth=27/03/1981");
            sb.Append("&surname=mbugua");
            sb.ToString();

var sb = new StringBuilder("https://secure.crbonline.gov.uk/crsc/api/status/001536522000?");
            sb.Append("dateOfBirth=27/03/1981");
            sb.Append("&surname=mbugua");
            sb.ToString();

namespace TestApp
{
    public class DataAccess
    {
        public List<Person> GetPeople()
        {
            using (IDbConnection connection = new System.Data.SqlClient.SqlConnection(Helper.CnnVal("EclipseDB")))
            {
                var output = connection.Query<Person>($"Select DISTINCT(c.id), p.forename, p.surname, FORMAT (p.date_of_birth, 'dd/MM/yyyy ') as [DateofBirth], cc.reference [CertificateNumber] from can_candidate c JOIN gen_person p on p.id = c.person_id JOIN gen_static_codebook st on st.id = c.status_id JOIN can_compliance cc on cc.candidate_id = c.id and cc.deleted is null Where c.deleted is null and st.id = 585 and cc.name like 'Update Service' and cc.approved = 1 and not cc.reference is null").ToList();
                return output;
                  }
            {
                var sb = new StringBuilder("https://secure.crbonline.gov.uk/crsc/api/status/001536522000?");
                sb.Append("dateOfBirth=27/03/1981");
                sb.Append("&surname=mbugua");
                sb.ToString();
            }



        }
            }
 }  

namespace TestApp
{
    public class DataAccess
    {
        public List<Person> GetPeople()
        {
            using (IDbConnection connection = new System.Data.SqlClient.SqlConnection(Helper.CnnVal("EclipseDB")))
            {
                var output = connection.Query<Person>($"Select DISTINCT(c.id), p.forename, p.surname, FORMAT (p.date_of_birth, 'dd/MM/yyyy ') as [DateofBirth], cc.reference [CertificateNumber] from can_candidate c JOIN gen_person p on p.id = c.person_id JOIN gen_static_codebook st on st.id = c.status_id JOIN can_compliance cc on cc.candidate_id = c.id and cc.deleted is null Where c.deleted is null and st.id = 585 and cc.name like 'Update Service' and cc.approved = 1 and not cc.reference is null").ToList();
                return output;
                  }
            {
                var sb = new StringBuilder("https://secure.crbonline.gov.uk/crsc/api/status/001536522000?");
                sb.Append("dateOfBirth=27/03/1981");
                sb.Append("&surname=mbugua");
                sb.ToString();
            }



        }
            }
 }  

var people = GetPeople();

foreach(var person in people)
{
  var sb = new StringBuilder("https://secure.crbonline.gov.uk/crsc/api/status/001536522000?");
  sb.Append($"dateOfBirth={person.DateOfBirth}");
  sb.Append($"&surname={person.Surname}");
  string url = sb.ToString();
  person.DBSLink = url;
  //use this url where u need it
}

var people = GetPeople();

foreach(var person in people)
{
  var sb = new StringBuilder("https://secure.crbonline.gov.uk/crsc/api/status/001536522000?");
  sb.Append($"dateOfBirth={person.DateOfBirth}");
  sb.Append($"&surname={person.Surname}");
  string url = sb.ToString();
  person.DBSLink = url;
  //use this url where u need it
}

public class Person
    {
        public int id { get; set; }
        public string Forename { get; set; }
        public string Surname { get; set; }
        public string DateOfBirth { get; set; }
        public string CertificateNumber { get; set; } 

        public string CheckDate { get; set; }

        public string CheckResult { get; set; }

        public string DBSLink { get; set; }

public class Person
    {
        public int id { get; set; }
        public string Forename { get; set; }
        public string Surname { get; set; }
        public string DateOfBirth { get; set; }
        public string CertificateNumber { get; set; } 

        public string CheckDate { get; set; }

        public string CheckResult { get; set; }

        public string DBSLink { get; set; }

namespace TestApp
{
    public class DataAccess
    {
        public List<Person> GetPeople()
        {
            using (IDbConnection connection = new System.Data.SqlClient.SqlConnection(Helper.CnnVal("EclipseDB")))
            {
                var output = connection.Query<Person>($"Select DISTINCT(c.id), p.forename, p.surname, FORMAT (p.date_of_birth, 'dd/MM/yyyy ') as [DateofBirth], cc.reference [CertificateNumber] from can_candidate c JOIN gen_person p on p.id = c.person_id JOIN gen_static_codebook st on st.id = c.status_id JOIN can_compliance cc on cc.candidate_id = c.id and cc.deleted is null Where c.deleted is null and st.id = 585 and cc.name like 'Update Service' and cc.approved = 1 and not cc.reference is null").ToList();
                return output;
            }
            
                var people = GetPeople();

                foreach (var person in people)
                {
                    var sb = new StringBuilder("https://secure.crbonline.gov.uk/crsc/api/status/001536522000?");
                    sb.Append($"dateOfBirth={person.DateOfBirth}");
                    sb.Append($"&surname={person.Surname}");
                    string url = sb.ToString();
                    person.DBSLink = url;
                    //use this url where u need it
                
            }
            }
        }
    }

namespace TestApp
{
    public class DataAccess
    {
        public List<Person> GetPeople()
        {
            using (IDbConnection connection = new System.Data.SqlClient.SqlConnection(Helper.CnnVal("EclipseDB")))
            {
                var output = connection.Query<Person>($"Select DISTINCT(c.id), p.forename, p.surname, FORMAT (p.date_of_birth, 'dd/MM/yyyy ') as [DateofBirth], cc.reference [CertificateNumber] from can_candidate c JOIN gen_person p on p.id = c.person_id JOIN gen_static_codebook st on st.id = c.status_id JOIN can_compliance cc on cc.candidate_id = c.id and cc.deleted is null Where c.deleted is null and st.id = 585 and cc.name like 'Update Service' and cc.approved = 1 and not cc.reference is null").ToList();
                return output;
            }
            
                var people = GetPeople();

                foreach (var person in people)
                {
                    var sb = new StringBuilder("https://secure.crbonline.gov.uk/crsc/api/status/001536522000?");
                    sb.Append($"dateOfBirth={person.DateOfBirth}");
                    sb.Append($"&surname={person.Surname}");
                    string url = sb.ToString();
                    person.DBSLink = url;
                    //use this url where u need it
                
            }
            }
        }
    }

               var people = GetPeople();

                foreach (var person in people)
                {
                    var sb = new StringBuilder("https://secure.crbonline.gov.uk/crsc/api/status/001536522000?");
                    sb.Append($"dateOfBirth={person.DateOfBirth}");
                    sb.Append($"&surname={person.Surname}");
                    string url = sb.ToString();
                    person.DBSLink = url;
                    //use this url where u need it
                

               var people = GetPeople();

                foreach (var person in people)
                {
                    var sb = new StringBuilder("https://secure.crbonline.gov.uk/crsc/api/status/001536522000?");
                    sb.Append($"dateOfBirth={person.DateOfBirth}");
                    sb.Append($"&surname={person.Surname}");
                    string url = sb.ToString();
                    person.DBSLink = url;
                    //use this url where u need it
                

public static void GenerateDBSLinks(List<Person> people)
{
            foreach (var person in people)
            {
                    var sb = new StringBuilder("https://secure.crbonline.gov.uk/crsc/api/status/001536522000?");
                    sb.Append($"dateOfBirth={person.DateOfBirth}");
                    sb.Append($"&surname={person.Surname}");
                    string url = sb.ToString();
                    person.DBSLink = url;
                    //use this url where u need it
            }
}

public static void GenerateDBSLinks(List<Person> people)
{
            foreach (var person in people)
            {
                    var sb = new StringBuilder("https://secure.crbonline.gov.uk/crsc/api/status/001536522000?");
                    sb.Append($"dateOfBirth={person.DateOfBirth}");
                    sb.Append($"&surname={person.Surname}");
                    string url = sb.ToString();
                    person.DBSLink = url;
                    //use this url where u need it
            }
}

 public static void API(List<Person> Candidate)
        { foreach (var person in Candidate)
            {
                var Client = new HttpClient();
                var endpoint = new Uri(person.DBSLink);
                var result = Client.GetAsync(endpoint).Result.ToString();
                person.CheckResult = result;

 public static void API(List<Person> Candidate)
        { foreach (var person in Candidate)
            {
                var Client = new HttpClient();
                var endpoint = new Uri(person.DBSLink);
                var result = Client.GetAsync(endpoint).Result.ToString();
                person.CheckResult = result;

 public static void GDL(List<Person> Candidate)
        {
            foreach (var person in Candidate)
            {
                var sb = new StringBuilder("https://secure.crbonline.gov.uk/crsc/api/status/");
                sb.Append($"{person.CertificateNumber}?");
                sb.Append($"dateOfBirth={person.DateOfBirth}");
                sb.Append($"&surname={person.Surname}&");
                sb.Append("hasAgreedTermsAndConditions=true&");
                sb.Append("organisationName=iCare24Group&");
                sb.Append("employeeSurname=Lintern&");
                sb.Append("employeeForename=Scott");
                string Disurl = sb.ToString();
                person.DBSLink = Disurl;
             }
        }

        //DBS Checking
                    
        static readonly HttpClient client = new HttpClient();
        static async Task DbsChecking(string Disurl)
                       
            {
            using HttpResponseMessage response = await client.GetAsync(Disurl);
            response.EnsureSuccessStatusCode();
            string responseBody = await response.Content.ReadAsStringAsync();
            
                        }

 public static void GDL(List<Person> Candidate)
        {
            foreach (var person in Candidate)
            {
                var sb = new StringBuilder("https://secure.crbonline.gov.uk/crsc/api/status/");
                sb.Append($"{person.CertificateNumber}?");
                sb.Append($"dateOfBirth={person.DateOfBirth}");
                sb.Append($"&surname={person.Surname}&");
                sb.Append("hasAgreedTermsAndConditions=true&");
                sb.Append("organisationName=iCare24Group&");
                sb.Append("employeeSurname=Lintern&");
                sb.Append("employeeForename=Scott");
                string Disurl = sb.ToString();
                person.DBSLink = Disurl;
             }
        }

        //DBS Checking
                    
        static readonly HttpClient client = new HttpClient();
        static async Task DbsChecking(string Disurl)
                       
            {
            using HttpResponseMessage response = await client.GetAsync(Disurl);
            response.EnsureSuccessStatusCode();
            string responseBody = await response.Content.ReadAsStringAsync();
            
                        }

int Sum(int a, int b) // a is 2, b is 3
{
   int total = a + b; // 2 + 3 is 5, total is now 5
   return total; // 5 returned to the method, thus method finished its execution, so it doesnt need to execute the PRINT MEE below
   Console.WriteLine("PRINT MEEE");
}

// program starts here
int number = Sum(2, 3); // calls the Sum Method, 2 + 3 is 5
Console.WriteLine(number); // prints 5

int Sum(int a, int b) // a is 2, b is 3
{
   int total = a + b; // 2 + 3 is 5, total is now 5
   return total; // 5 returned to the method, thus method finished its execution, so it doesnt need to execute the PRINT MEE below
   Console.WriteLine("PRINT MEEE");
}

// program starts here
int number = Sum(2, 3); // calls the Sum Method, 2 + 3 is 5
Console.WriteLine(number); // prints 5

//Create the URL for DBS Check
        public static void GDL(List<Person> Candidate)
        {
            foreach (var person in Candidate)
            {
                var sb = new StringBuilder("https://secure.crbonline.gov.uk/crsc/api/status/");
                sb.Append($"{person.CertificateNumber}?");
                sb.Append($"dateOfBirth={person.DateOfBirth}");
                sb.Append($"&surname={person.Surname}&");
                sb.Append("hasAgreedTermsAndConditions=true&");
                sb.Append("organisationName=iCare24Group&");
                sb.Append("employeeSurname=Lintern&");
                sb.Append("employeeForename=Scott");
                string Disurl = sb.ToString();
                person.DBSLink = Disurl;
                person.CheckResult = await DbsChecking(Disurl);

            }
        }

        //DBS Checking
                    
        static readonly HttpClient client = new HttpClient();
        static async Task<string> DbsChecking(string Disurl)
                       
            {
            using HttpResponseMessage response = await client.GetAsync(Disurl);
            response.EnsureSuccessStatusCode();
            string responseBody = await response.Content.ReadAsStringAsync();
            

            // somehow add responseBody = person.CheckResult i Think i need a foreach statement but i cant quite get it right.
        }
       
    }
 }

//Create the URL for DBS Check
        public static void GDL(List<Person> Candidate)
        {
            foreach (var person in Candidate)
            {
                var sb = new StringBuilder("https://secure.crbonline.gov.uk/crsc/api/status/");
                sb.Append($"{person.CertificateNumber}?");
                sb.Append($"dateOfBirth={person.DateOfBirth}");
                sb.Append($"&surname={person.Surname}&");
                sb.Append("hasAgreedTermsAndConditions=true&");
                sb.Append("organisationName=iCare24Group&");
                sb.Append("employeeSurname=Lintern&");
                sb.Append("employeeForename=Scott");
                string Disurl = sb.ToString();
                person.DBSLink = Disurl;
                person.CheckResult = await DbsChecking(Disurl);

            }
        }

        //DBS Checking
                    
        static readonly HttpClient client = new HttpClient();
        static async Task<string> DbsChecking(string Disurl)
                       
            {
            using HttpResponseMessage response = await client.GetAsync(Disurl);
            response.EnsureSuccessStatusCode();
            string responseBody = await response.Content.ReadAsStringAsync();
            

            // somehow add responseBody = person.CheckResult i Think i need a foreach statement but i cant quite get it right.
        }
       
    }
 }

person.CheckResult = await DbsChecking(responseBody);

person.CheckResult = await DbsChecking(responseBody);

       foreach (var person in Candidate)
            {
              try{
                var sb = new StringBuilder("https://secure.crbonline.gov.uk/crsc/api/status/");
                sb.Append($"{person.CertificateNumber}?");
                sb.Append($"dateOfBirth={person.DateOfBirth}");
                sb.Append($"&surname={person.Surname}&");
                sb.Append("hasAgreedTermsAndConditions=true&");
                sb.Append("organisationName=iCare24Group&");
                sb.Append("employeeSurname=Lintern&");
                sb.Append("employeeForename=Scott");
                string Disurl = sb.ToString();
                person.DBSLink = Disurl;
                person.CheckResult = await DbsChecking(Disurl);
              }catch(Exception e)
              {
                  person.CheckResult = "I errored";
               }
            }

       foreach (var person in Candidate)
            {
              try{
                var sb = new StringBuilder("https://secure.crbonline.gov.uk/crsc/api/status/");
                sb.Append($"{person.CertificateNumber}?");
                sb.Append($"dateOfBirth={person.DateOfBirth}");
                sb.Append($"&surname={person.Surname}&");
                sb.Append("hasAgreedTermsAndConditions=true&");
                sb.Append("organisationName=iCare24Group&");
                sb.Append("employeeSurname=Lintern&");
                sb.Append("employeeForename=Scott");
                string Disurl = sb.ToString();
                person.DBSLink = Disurl;
                person.CheckResult = await DbsChecking(Disurl);
              }catch(Exception e)
              {
                  person.CheckResult = "I errored";
               }
            }