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В моем проекте Silverlight есть ссылки на клиент Silverlight Silver Services, а мое приложение .web имеет доступ к RIAServices.Server.Silverlight разговаривает с WCF с помощью службы RIA Silverlight Client
Я не могу найти хороший учебник, чтобы узнать, как его подключить. Как только я понимаю, как получить данные из моего метода NumberGenerator. Я могу забрать его оттуда. У меня есть три вопроса, с которыми мне нужна помощь.
Во-первых, правильно ли настроен этот проект? Раньше я никогда не делал проект с RIA.
Во-вторых, какую ссылку мне нужно использовать ServiceContract(), FaultContract и OperationContract? Большинство примеров показывают, что они находятся в библиотеке System.ServiceModel. В этом случае с использованием внешней библиотеки RIA Services Silverlight Client это не так. Он выдает ошибку, говоря, что мне не хватает ссылки. В каких других библиотеках были бы эти трое?
Последний вопрос: какой URI вы используете в SystemDomainContext? Где я нашел код при использовании этого MyFirstRIAApplication-Web-EmployeeDomainService.svc, но в моем случае у меня нет ничего, что имеет расширение .svc. Использую ли я .xap или .aspx?
Вот мой Silverlight код
Вот мой NumberGenerator Silverlight UserControl страницу Код
public partial class NumberGenerator : UserControl
{
public NumberGenerator()
{
InitializeComponent();
GenerateNumber();
}
private void GenerateButton_Click(object sender, RoutedEventArgs e)
{
GenerateNumber();
}
private void GenerateNumber()
{
int result = 0
SystemClientServices systemclientservices = SystemClientServices.Instance;
result = systemclientservices.GenerateNumber();
NumberLabel.Content = result;
}
}
Вот моя система обслуживания клиентов класса
private readonly static SystemClientServices _instance = new SystemClientServices();
private SystemDomainContext _domainContext = new SystemDomainContext();
private SystemClientServices() { }
public static SystemClientServices Instance
{
get
{
return _instance;
}
}
public int GenerateNumber()
{
//Code goes here to get the information from the Domainservices
LoadOperation load = this._domainContext.Load(this._domainContext.GetNumberGeneratorQuery(), LoadBehavior.KeepCurrent, false);
return Convert.ToInt32(load.Entities);
}
Вот мой класс NumberGenerator на Silverlight местный проект
public sealed partial class NumberGenerator : Entity
{
private static readonly NumberGenerator _instance = new NumberGenerator();
public int NumberGenerated { get; set; }
public NumberGenerator()
{
NumberGenerated = 0;
}
public static NumberGenerator Instance
{
get
{
return _instance;
}
}
}
Вот класс Domain Conext System на SilverLight локального проекта
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.ComponentModel.DataAnnotations;
using System.Linq;
using System.Runtime.Serialization;
using System.ServiceModel.DomainServices;
using System.ServiceModel.DomainServices.Client;
using System.ServiceModel.DomainServices.Client.ApplicationServices;
using System.ServiceModel.Web;
using System.ServiceModel;
public sealed partial class SystemDomainConext : DomainContext
{
#region Extensibility Method Definitions
/// <summary>
/// This method is invoked from the constructor once initialization is complete and
/// can be used for further object setup.
/// </summary>
partial void OnCreated();
#endregion
/// <summary>
/// Initializes a new instance of the <see cref="EmployeeDomainContext"/> class.
/// </summary>
public SystemDomainConext() : this(new WebDomainClient<ISystemDomainServiceContract>(new Uri("MyFirstRIAApplication-Web-EmployeeDomainService.svc", UriKind.Relative)))
{
}
/// <summary>
/// Initializes a new instance of the <see cref="EmployeeDomainContext"/> class with the specified service URI.
/// </summary>
/// <param name="serviceUri">The EmployeeDomainService service URI.</param>
public SystemDomainConext(Uri serviceUri) : this(new WebDomainClient<ISystemDomainServiceContract>(serviceUri))
{
}
/// <summary>
/// Initializes a new instance of the <see cref="EmployeeDomainContext"/> class with the specified <paramref name="domainClient"/>.
/// </summary>
/// <param name="domainClient">The DomainClient instance to use for this DomainContext.</param>
public SystemDomainConext(DomainClient domainClient) : base(domainClient)
{
this.OnCreated();
}
/// <summary>
/// Gets the set of <see cref="Employee"/> entity instances that have been loaded into this <see cref="EmployeeDomainContext"/> instance.
/// </summary>
public EntitySet<NumberGenerator> GeneratedNumber
{
get
{
return base.EntityContainer.GetEntitySet<NumberGenerator>();
}
}
/// <summary>
/// Gets an EntityQuery instance that can be used to load <see cref="Employee"/> entity instances using the 'GetEmployee' query.
/// </summary>
/// <returns>An EntityQuery that can be loaded to retrieve <see cref="Employee"/> entity instances.</returns>
public EntityQuery<NumberGenerator> GetNumberGeneratorQuery()
{
this.ValidateMethod("GetGeneratedNumber", null);
return base.CreateQuery<NumberGenerator>("GetNumberGenerator", null, false, true);
}
/// <summary>
/// Creates a new EntityContainer for this DomainContext's EntitySets.
/// </summary>
/// <returns>A new container instance.</returns>
protected override EntityContainer CreateEntityContainer()
{
return new NumberGeneratorDomainContextEntityContainer();
}
/// <summary>
/// Service contract for the 'EmployeeDomainService' DomainService.
/// </summary>
[ServiceContract()]
public interface ISystemDomainServiceContract
{
/// <summary>
/// Asynchronously invokes the 'GetEmployee' operation.
/// </summary>
/// <param name="callback">Callback to invoke on completion.</param>
/// <param name="asyncState">Optional state object.</param>
/// <returns>An IAsyncResult that can be used to monitor the request.</returns>
[FaultContract(typeof(DomainServiceFault), Action="http://tempuri.org/EmployeeDomainService/GetEmployeeDomainServiceFault", Name="DomainServiceFault", Namespace="DomainServices")]
[OperationContract(AsyncPattern=true, Action="http://tempuri.org/EmployeeDomainService/GetEmployee", ReplyAction="http://tempuri.org/EmployeeDomainService/GetEmployeeResponse")]
[WebGet()]
IAsyncResult GetGeneratedNumber(AsyncCallback callback, object asyncState);
/// <summary>
/// Completes the asynchronous operation begun by 'BeginGetEmployee'.
/// </summary>
/// <param name="result">The IAsyncResult returned from 'BeginGetEmployee'.</param>
/// <returns>The 'QueryResult' returned from the 'GetEmployee' operation.</returns>
QueryResult<NumberGenerator> EndGetGeneratedNumber(IAsyncResult result);
/// <summary>
/// Asynchronously invokes the 'SubmitChanges' operation.
/// </summary>
/// <param name="changeSet">The change-set to submit.</param>
/// <param name="callback">Callback to invoke on completion.</param>
/// <param name="asyncState">Optional state object.</param>
/// <returns>An IAsyncResult that can be used to monitor the request.</returns>
[FaultContract(typeof(DomainServiceFault), Action="http://tempuri.org/EmployeeDomainService/SubmitChangesDomainServiceFault", Name="DomainServiceFault", Namespace="DomainServices")]
[OperationContract(AsyncPattern=true, Action="http://tempuri.org/EmployeeDomainService/SubmitChanges", ReplyAction="http://tempuri.org/EmployeeDomainService/SubmitChangesResponse")]
IAsyncResult BeginSubmitChanges(IEnumerable<ChangeSetEntry> changeSet, AsyncCallback callback, object asyncState);
/// <summary>
/// Completes the asynchronous operation begun by 'BeginSubmitChanges'.
/// </summary>
/// <param name="result">The IAsyncResult returned from 'BeginSubmitChanges'.</param>
/// <returns>The collection of change-set entry elements returned from 'SubmitChanges'.</returns>
IEnumerable<ChangeSetEntry> EndSubmitChanges(IAsyncResult result);
}
internal sealed class NumberGeneratorDomainContextEntityContainer : EntityContainer
{
public NumberGeneratorDomainContextEntityContainer()
{
this.CreateEntitySet<NumberGenerator>(EntitySetOperations.Edit);
}
}
}
Вот мой Доменные службы системы класса, который находится на Silverlight.web
[EnableClientAccess()]
public class SystemDomainServices : DomainService
{
private NumberGenerator numberGenerator = NumberGenerator.Instance;
public int NumberGenerate()
{
return numberGenerator.NumberGenerated;
}
}
Вот класс NumberGenerator на Silverlight .web
private static readonly NumberGenerator _instance = new NumberGenerator();
[Key]
public int NumberGenerated { get; set; }
public NumberGenerator()
{
NumberGenerated = GenerateNumber();
}
public static NumberGenerator Instance
{
get
{
return _instance;
}
}
public int GenerateNumber()
{
string db_date = "";
int db_num = 0;
string todaysdate = "";
int temp_num = db_num;
int result = 0;
using (SqlConnection connection = new SqlConnection(DBConnectionString))
{
connection.Open();
using (SqlCommand command = new SqlCommand("SELECT * FROM table", connection))
{
using (SqlDataReader reader = command.ExecuteReader())
{
while (reader.Read())
{
db_date = reader.GetString(0);
db_num = (int)(reader.GetSqlInt32(1));
todaysdate = DateTime.Now.ToString("yMMdd");
temp_num = db_num;
}
reader.Close();
}
if (todaysdate != db_date)
{
using (SqlCommand dateUpate = new SqlCommand("UPDATE table SET tsDate='" + todaysdate + "' WHERE tsDate='" + db_date + "'", connection))
{
dateUpate.ExecuteNonQuery();
}
db_num = 0;
db_date = todaysdate;
}
db_num++;
using (SqlCommand numUpate = new SqlCommand("UPDATE table SET tsNum='" + db_num + "' WHERE tsNum='" + temp_num + "'", connection))
{
numUpate.ExecuteNonQuery();
}
result = Convert.ToInt32(db_date + db_num.ToString().PadLeft(3, '0'));
connection.Close();
connection.Dispose();
}
return result;
}
}
Создайте экземпляр клиента службы и вызовите соответствующий метод. –
@GiorgiNakeuri, насколько близок мой проект теперь к тому, каким он должен быть? –