Microsoft .NET RIA Services快速上手-技术开发专区

Microsoft .NET RIA Services快速上手

作者：流牛木马的博客编辑：胡铭娅 2009-04-03 14:17 来源：IT168�

点击Show All Files，你会发现系统已经为你生成了客户端的类，放在了Generated_Code目录下。我们将它include进来。

这个RiaServices_1.Web.g.cs，是服务端RdChat_DomainService.cs的对应客户端版本。它包含了所有服务端版本类中定义的方法、实体等，而可在客户端直接调用。它打代码如下：

//------------------------------------------------------------------------------
//
//     This code was generated by a tool.
//     Runtime Version:2.0.50727.3053
//
//     Changes to this file may cause incorrect behavior and will be lost if
//     the code is regenerated.
//
//------------------------------------------------------------------------------

namespace RiaServices_1.Web
{
    using System;
    using System.Collections.Generic;
    using System.ComponentModel;
    using System.ComponentModel.DataAnnotations;
    using System.Linq;
    using System.Runtime.Serialization;
    using System.Web.Ria.Data;
    using System.Windows.Ria.Data;


    [DataContract(Namespace="http://schemas.datacontract.org/2004/07/RiaServices_1.Web")]
    public sealed partial class Messages : Entity
    {

        private string _body;

        private string _name;

        private string _partitionKey;

        private string _rowKey;

        private Nullable<DateTime> _timestamp;

        [DataMember()]
        public string Body
        {
            get
            {
                return this._body;
            }
            set
            {
                if ((this._body != value))
                {
                    this.ValidateProperty("Body", value);
                    this.RaiseDataMemberChanging("Body");
                    this._body = value;
                    this.RaiseDataMemberChanged("Body");
                }
            }
        }

        [DataMember()]
        public string Name
        {
            get
            {
                return this._name;
            }
            set
            {
                if ((this._name != value))
                {
                    this.ValidateProperty("Name", value);
                    this.RaiseDataMemberChanging("Name");
                    this._name = value;
                    this.RaiseDataMemberChanged("Name");
                }
            }
        }

        [DataMember()]
        [Key()]
        public string PartitionKey
        {
            get
            {
                return this._partitionKey;
            }
            set
            {
                if ((this._partitionKey != value))
                {
                    this.ValidateProperty("PartitionKey", value);
                    this.RaiseDataMemberChanging("PartitionKey");
                    this._partitionKey = value;
                    this.RaiseDataMemberChanged("PartitionKey");
                }
            }
        }

        [DataMember()]
        [Key()]
        public string RowKey
        {
            get
            {
                return this._rowKey;
            }
            set
            {
                if ((this._rowKey != value))
                {
                    this.ValidateProperty("RowKey", value);
                    this.RaiseDataMemberChanging("RowKey");
                    this._rowKey = value;
                    this.RaiseDataMemberChanged("RowKey");
                }
            }
        }

        [DataMember()]
        public Nullable<DateTime> Timestamp
        {
            get
            {
                return this._timestamp;
            }
            set
            {
                if ((this._timestamp != value))
                {
                    this.ValidateProperty("Timestamp", value);
                    this.RaiseDataMemberChanging("Timestamp");
                    this._timestamp = value;
                    this.RaiseDataMemberChanged("Timestamp");
                }
            }
        }

        public override object GetIdentity()
        {
            return EntityKey.Create(this._partitionKey, this._rowKey);
        }
    }

    public sealed partial class RdChat_DomainContext : DomainContext
    {

        #region Query root fields
        private static IQueryable<Messages> _MessagesQuery = new Messages[0].AsQueryable();
        #endregion

        ///
        /// Default constructor.
        ///
        public RdChat_DomainContext() :
                base(new HttpDomainClient(new Uri("DataService.axd/RiaServices_1-Web-RdChat_DomainService/", System.UriKind.Relative)))
        {
        }

        ///
        /// Constructor used to specify a data service URI.
        ///
        ///
        /// The RdChat_DomainService data service URI.
        ///
        public RdChat_DomainContext(Uri serviceUri) :
                base(new HttpDomainClient(serviceUri))
        {
        }

        ///
        /// Constructor used to specify a DomainClient instance.
        ///
        ///
        /// The DomainClient instance the DomainContext should use.
        ///
        public RdChat_DomainContext(DomainClient domainClient) :
                base(domainClient)
        {
        }

        public EntityList<Messages> Messages
        {
            get
            {
                return this.Entities.GetEntityList<Messages>();
            }
        }

        #region Query root properties
        public static IQueryable<Messages> MessagesQuery
        {
            get
            {
                return _MessagesQuery;
            }
        }
        #endregion

        #region LoadMessages method overloads
        ///
        /// Invokes the server-side method 'GetMessages' and loads the result into .
        ///
        [LoadMethod(typeof(Messages))]
        public void LoadMessages(IQueryable<Messages> query, MergeOption mergeOption, object userState)
        {
            base.Load("GetMessages", null, query, mergeOption, userState);
        }

        ///
        /// Invokes the server-side method 'GetMessages' and loads the result into .
        ///
        [LoadMethod(typeof(Messages))]
        public void LoadMessages()
        {
            this.LoadMessages(null, MergeOption.KeepCurrentValues, null);
        }

        ///
        /// Invokes the server-side method 'GetMessages' and loads the result into .
        ///
        [LoadMethod(typeof(Messages))]
        public void LoadMessages(IQueryable<Messages> query, object userState)
        {
            this.LoadMessages(query, MergeOption.KeepCurrentValues, userState);
        }
        #endregion

        protected override EntityContainer CreateEntityContainer()
        {
            return new RdChat_DomainContextEntityContainer();
        }

        internal sealed class RdChat_DomainContextEntityContainer : EntityContainer
        {

            public RdChat_DomainContextEntityContainer()
            {
                this.CreateEntityList<Messages>(EntityListOperations.All);
            }
        }
    }
}

打开Silverlight项目的 MainPage.xaml ，我们放入一些控件，做简单的界面。

包括一个DataGrid ,TextBox和Button。在按钮中添加Click方法。

<UserControl xmlns:data="clr-namespace:System.Windows.Controls;assembly=System.Windows.Controls.Data"  x:Class="RiaServices_1.MainPage"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    Width="640" Height="450">
    <Grid x:Name="LayoutRoot" Background="White">
        <StackPanel Orientation="Vertical"  Height="420">
            <data:DataGrid x:Name="dataGrid" >data:DataGrid>
            <StackPanel Orientation="Horizontal" Height="25">
                <TextBox x:Name="txtMsg" Text=" " Width="580"  >TextBox>
                <Button x:Name="btnSend" Content="发送消息"  Click="btnSend_Click"  >Button>
            StackPanel>
        StackPanel>
    Grid>
UserControl>

在MainPage.xaml后台对应的cs文件 MainPage.xaml.cs 中，写入初始方法和处理按钮点击的方法。

初始时，将所有已有的数据绑定到DataGrid中。

点击Click方法后，将添加一条新数据到数据库，并刷新外观使新数据显示出来。

第1页：Microsoft .NET RIA Services快速上手第2页：入门实例第3页：RiaServiceModel.edmx 第4页：再次编译整个Solution 第5页：生成的客户端版本数据处理类

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