“服务引用”和“Web引用”之间的不同行为

我有如下定义的WCF端点暴露,

<service name="MyApp.Server.Endpoint.Orange" behaviorConfiguration="MyTio.Server.Endpoint.OrangeBehavior">
  <endpoint address="" binding="basicHttpBinding" contract="Host.Server.Contract.IMyAppApi" bindingNamespace="http://host.com/myapp">
    <identity>
      <dns value="localhost"/>
    </identity>
  </endpoint>
  <endpoint address="mex" binding="mexHttpBinding" contract="IMetadataExchange"/>
</service>

当我在.NET 3.5中添加“服务引用”时,我们在代理中得到了以下类,这是非常好的:

    [System.Diagnostics.DebuggerStepThroughAttribute()]
[System.CodeDom.Compiler.GeneratedCodeAttribute("System.Runtime.Serialization", "3.0.0.0")]
[System.Runtime.Serialization.DataContractAttribute(Name="GetMemberBillersRequest", Namespace="http://schemas.datacontract.org/2004/07/Contract.MemberBillers")]
[System.SerializableAttribute()]
public partial class GetMemberBillersRequest : WCFClient.MyRequest {

    [System.Runtime.Serialization.OptionalFieldAttribute()]
    private int ApplicationIdField;

    [System.Runtime.Serialization.OptionalFieldAttribute()]
    private int ProductIdField;

    [System.Runtime.Serialization.DataMemberAttribute()]
    public int ApplicationId {
        get {
            return this.ApplicationIdField;
        }
        set {
            if ((this.ApplicationIdField.Equals(value) != true)) {
                this.ApplicationIdField = value;
                this.RaisePropertyChanged("ApplicationId");
            }
        }
    }

    [System.Runtime.Serialization.DataMemberAttribute()]
    public int ProductId {
        get {
            return this.ProductIdField;
        }
        set {
            if ((this.ProductIdField.Equals(value) != true)) {
                this.ProductIdField = value;
                this.RaisePropertyChanged("ProductId");
            }
        }
    }
}

问题是在.NET 2.0中添加对同一服务的引用时

您将获得同一合同的以下代理:

    [System.CodeDom.Compiler.GeneratedCodeAttribute("System.Xml", "2.0.50727.3082")]
[System.SerializableAttribute()]
[System.Diagnostics.DebuggerStepThroughAttribute()]
[System.ComponentModel.DesignerCategoryAttribute("code")]
[System.Xml.Serialization.XmlTypeAttribute(Namespace="http://schemas.datacontract.org/2004/07/Contract.MemberBillers")]
public partial class GetMemberBillersRequest : MyRequest {

    private int applicationIdField;

    private bool applicationIdFieldSpecified;

    private int productIdField;

    private bool productIdFieldSpecified;

    /// <remarks/>
    public int ApplicationId {
        get {
            return this.applicationIdField;
        }
        set {
            this.applicationIdField = value;
        }
    }

    /// <remarks/>
    [System.Xml.Serialization.XmlIgnoreAttribute()]
    public bool ApplicationIdSpecified {
        get {
            return this.applicationIdFieldSpecified;
        }
        set {
            this.applicationIdFieldSpecified = value;
        }
    }

    /// <remarks/>
    public int ProductId {
        get {
            return this.productIdField;
        }
        set {
            this.productIdField = value;
        }
    }

    /// <remarks/>
    [System.Xml.Serialization.XmlIgnoreAttribute()]
    public bool ProductIdSpecified {
        get {
            return this.productIdFieldSpecified;
        }
        set {
            this.productIdFieldSpecified = value;
        }
    }
}

除了通过.NET 2.0生成的代理具有两个附加字段外,这两个字段都是相同的:

ProductIDFields已指定,ApplicationIDFields已指定。这两个字段的问题是,如果您不手动将它们设置为true,它们对应的字段(ApplicationId、ProductId)将不会序列化并传递给服务器!

有人能给我解释一下这里发生了什么事吗?

编辑:

我发现这只发生在int类型上,而不是字符串上! 这是此操作的数据协定

[DataContract]
public class GetMemberBillersRequest : MyRequest
{
    [DataMember]
    public int ApplicationId { get; set; }

    [DataMember]
    public int ProductId { get; set; }
}