Question

我们正在开发一个Windows Phone 8应用程序，它可以从.NET WebService获取数据。我们必须从大记录列表中检查哪一个已被修改或删除，并将其传递回应用程序。目前记录超过46000;我解释说：

我们的Windows手机应用会执行此调用：

    private const int HUGE_OPERATION_TIMEOUT_MINUTES = 10;

    public static Task<GetCustomersCompletedEventArgs> GetClientiAsyncTask(this GridwaySoapClient client,
    Guid AuthenticationToken, DateTime LastUpdate, 
    int i, string jsonEntityKeyList)
    {
        var tcs = new TaskCompletionSource<GetCustomersCompletedEventArgs>();

        client.Endpoint.Address = WsAddress();
        client.Endpoint.Binding.ReceiveTimeout = new TimeSpan(0, HUGE_OPERATION_TIMEOUT_MINUTES, 0);
        client.Endpoint.Binding.OpenTimeout = new TimeSpan(0, HUGE_OPERATION_TIMEOUT_MINUTES, 0);
        client.Endpoint.Binding.CloseTimeout = new TimeSpan(0, HUGE_OPERATION_TIMEOUT_MINUTES, 0);
        client.Endpoint.Binding.SendTimeout = new TimeSpan(0, HUGE_OPERATION_TIMEOUT_MINUTES, 0);           
        client.InnerChannel.OperationTimeout = new TimeSpan(0, HUGE_OPERATION_TIMEOUT_MINUTES, 0);
        client.GetCustomersCompleted += (s, e) => TransferCompletion<GetCustomersCompletedEventArgs>(tcs, e, () => e);

        try
        {
            client.OpenAsync();
            client.GetCustomersAsync(AuthenticationToken, LastUpdate, jsonEntityKeyList, string.Empty, i);
        }
        catch (Exception ex)
        {
            throw ex;
        }

        return tcs.Task;
    }

GetCustomersAsync调用另一个方法，该方法调用WS传递ID列表;使用下面的脚本在数据库上检查这些ID。

这就是我们所做的：

我们从app传递了一个id列表，它们是已经传递的记录的ID
db check，通过获取db上的所有记录ID，如果传递的ID仍在此列表中

WS传回一个新的id列表，这些id是从db

中删除或编辑的id

[WebMethod(BufferResponse = false)]
public string GetCustomers(Guid AuthenticationToken, DateTime LastUpdate,
    string jsonEntityKeyList, ref string jsonDeleteKeyList, int chiamataNumero)
{
    List<CUSTOMER> customers = new List<CUSTOMER>();

    if (GridwayAuthenticationToken.Exist(AuthenticationToken))
    {

        List<string> EntityKeyList = JsonConvert.DeserializeObject<List<string>>(jsonEntityKeyList);
        var crmCtx01 = new CrmGridwayAdapter().GetXrmServiceContext();

        // if it's the first time we don't ned to remove anything from app
        // 01/01/1900 is the defauld date used if there's no lastUpdate's date
        if (LastUpdate == null || LastUpdate == new DateTime(1900, 01, 01))
        {


            List<Account> clienti = new List<Account>();
            try
            {
                clienti = crmCtx01.AccountSet.Skip(chiamataNumero * 500).Take(500).ToList();
            }
            catch
            {
                return Serializer.Serialize(customers);
            }
            var clientiToPick = clienti.Where(x => !EntityKeyList.Contains(x.Id.ToString())).ToList();

            if (clientiToPick.Count == 0 && clienti.Count > 0)
            {
                List<CUSTOMER> fake = new List<CUSTOMER>();
                CUSTOMER fakeS = null;
                fake.Add(fakeS);
                return Serializer.Serialize(fake);
            }

            if (clientiToPick != null)
            {
                customers = clientiToPick.Select(x => new CUSTOMER()
                {
                    ID = (Guid)x.AccountId,
                    FULL_NAME = x.Name,
                    PHONE_NO = x.Telephone1,
                    PIVA_CF = x.new_piva,
                    MODIFIED_ON = (x.ModifiedOn == null ? CRMMinDate() : Convert.ToDateTime(x.ModifiedOn))
                }).ToList();
            }
        }
        //if it's not the first time we sync there might be datas on app
        else
        {
            //we do this step only the first time
            if (chiamataNumero == 0 && EntityKeyList.Count() > 0)
            {
                try
                {
            // THIS is the step stopping connection
                    List<string> customersId = crmCtx01.AccountSet
                        .Select(x => x.AccountId.ToString()).ToList();
                    List<string> noMoreExistingRecords = EntityKeyList.Where(x => !customersId.Contains(x)).ToList();
                    List<string> editedRecords = crmCtx01.AccountSet.Where(x => x.ModifiedOn > LastUpdate).Select(x => x.AccountId.ToString()).ToList();
                    List<string> AddressCessatiIds = crmCtx01.AccountSet.Where(x => x.StateCode != 0).Select(x => x.AccountId.ToString()).ToList();
                    noMoreExistingRecords.AddRange(editedRecords);
                    noMoreExistingRecords.AddRange(AddressCessatiIds);
                    EntityKeyList.RemoveAll(x => editedRecords.Contains(x));

                    jsonDeleteKeyList = Serializer.Serialize(noMoreExistingRecords);
                }
                catch (Exception ex) { }
            }


            List<Account> clienti = new List<Account>();
            try
            {
                clienti = crmCtx01.AccountSet.Where(x => x.ModifiedOn > LastUpdate).Skip(chiamataNumero * 500).Take(500).ToList();
            }
            catch
            {
                return Serializer.Serialize(customers);
            } 
            var clientiToPick = clienti.Where(x => !EntityKeyList.Contains(x.Id.ToString())).ToList();

            if (clientiToPick.Count == 0 && clienti.Count > 0)
            {
                List<CUSTOMER> fake = new List<CUSTOMER>();
                CUSTOMER fakeS = null;
                fake.Add(fakeS);
                return Serializer.Serialize(fake);
            }

            if (clientiToPick != null)
            {
                customers = clientiToPick.Select(x => new CUSTOMER()
                {
                    ID = (Guid)x.AccountId,
                    FULL_NAME = x.Name,
                    PHONE_NO = x.Telephone1,
                    PIVA_CF = x.new_piva,
                    MODIFIED_ON = (x.ModifiedOn == null ? CRMMinDate() : Convert.ToDateTime(x.ModifiedOn))
                }).ToList();
            }
        }

        return Serializer.Serialize(customers);
    }
    else
    {
        throw GridwayAuthenticationToken.AuthenticationExceptions.AuthenticationRequired();
    }
}

所以：此代码不会仅执行我所说的电话，而且还会拨打电话，向应用提供尚未下载的记录。我们遇到了同样的问题所以我们每次都要传递500条记录，我们解决了连接丢失的问题;它很慢但是有效。

我们无法为ids执行此操作，我们将其全部通过，我们无法检查超过46000条记录的列表是否包含500条而没有所有4600条记录。

任何人都可以提供帮助？我们不知道如何解决它

c＃.NET WebServices Connection丢失了将数据传递给Windows Phone应用程序

0 个答案: