Question

我试图遍历PersonalIdentityNumber但收到错误：

指数超出范围。它不能是负面的，必须更小而不是人群的大小。

   string connetionString = null;


            SqlDataAdapter adpter = new SqlDataAdapter();
            DataSet ds = new DataSet();
            XmlReader xmlFile;



            connetionString = "Data Source=tsrv2062;Initial Catalog=Bums;User ID=BumsUser;Password=2tusen7Bums";


            xmlFile = XmlReader.Create("navetout.xml", new XmlReaderSettings());
            ds.ReadXml(xmlFile);


            using(var connection = new SqlConnection(connetionString)) {
    connection.Open();



            DateTime datum = DateTime.Now;

            SqlCommand command1 = new SqlCommand("UPDATE Seamen SET FirstName = @FirstName, LastName = @LastName, NationalRegistrationCountyCode = @NationalRegistrationCountyCode, NationalRegistrationMunicipalityCode = @NationalRegistrationMunicipalityCode, NationalRegistrationDistributionAddress2 = @NationalRegistrationDistributionAddress2, CitizenshipCode = @CitizenshipCode, LastChangedDate = @LastChangedDate WHERE PersonalIdentityNumber = @PersonalIdentityNumber", connection);

            for (int i = 0; i < PersonalIdentityNumber.Count; i++) //<--Error
            {

                var personnummer = PersonalIdentityNumber[i];
                var fornamn = FirstName[i];
                var efternamn = LastName[i];
                var lankod = LanKod[i];
                var kommunkod = Kommunkod[i];
                var utdelAdress2 = UtdelAdress2[i];
                var medborgarskapslandKod = MedborgarskapslandKod[i];


                command1.Parameters.Clear();
                command1.Parameters.AddWithValue("@PersonalIdentityNumber", personnummer);
                command1.Parameters.AddWithValue("@FirstName", fornamn);
                command1.Parameters.AddWithValue("@LastName", efternamn);
                command1.Parameters.AddWithValue("@NationalRegistrationCountyCode", lankod);
                command1.Parameters.AddWithValue("@NationalRegistrationMunicipalityCode", kommunkod);
                command1.Parameters.AddWithValue("@NationalRegistrationDistributionAddress2", utdelAdress2);

                command1.Parameters.AddWithValue("@CitizenshipCode", medborgarskapslandKod);

                command1.Parameters.AddWithValue("@LastChangedDate", datum);



                command1.ExecuteNonQuery();

                Console.WriteLine(personnummer);


   }
          }

                Console.WriteLine("Done");

对象：

 List<FolkbokforingspostTYPE> deserializedList = new List<FolkbokforingspostTYPE>();
            deserializedList = Deserialize<List<FolkbokforingspostTYPE>>();

            var PersonalIdentityNumber = deserializedList.Select(item => item.Personpost.PersonId.PersonNr).ToList();
            var FirstName = deserializedList.Select(item => item.Personpost.Namn.Fornamn).ToList();

            var LastName = deserializedList.Select(item => item.Personpost.Namn.Efternamn).ToList();
            var LanKod = deserializedList.Select(item => item.Personpost.Folkbokforing.LanKod).ToList();
            var Kommunkod = deserializedList.Select(item => item.Personpost.Folkbokforing.KommunKod).ToList();

            var UtdelAdress2 = deserializedList.Select(item => item.Personpost.Adresser.Folkbokforingsadress.Utdelningsadress2).FirstOrDefault().ToList();

我反序列化XML并将值存储在这些对象上。

我的目标是使用XML中的值更新数据库中的表，它适用于foreach循环，但很难处理那么多变量foreach循环，这就是我希望它与for循环

一起使用的原因

有谁知道我为什么会收到这个错误？

更新

显然，问题出在这一行：

 var utdelAdress2 = UtdelAdress2[i];

它是空的。

我现在的问题是：是否可以跳过空值并继续其余的？

指数超出范围。它不能是负面的，必须小于人群的大小

0 个答案: