Question

我已经定义了一个MessageContract，以便通过WCF传输Stream以及其他一些数据：

[MessageContract]
public class DTSetGeotagImageMessage
{
    [MessageHeader(MustUnderstand = true)]
    public DTGeotagImageFileInfo GeotagImageFileInfo;

    [MessageBodyMember(Order = 1)]
    public Stream FileData;
}

public class DTGeotagImageFileInfo
{ //All these properties are not showing up in the WSDL:
    public long? GeotagID { get; internal set; }
    public string GeotagGuid { get; internal set; }
    public string ImageGuid { get; internal set; }
    public long GeotagFieldId { get; internal set; }
    public double Lat { get; internal set; }
    public double Lon { get; internal set; }
}

WSDL：

<xs:complexType name="DTGeotagImageFileInfo">
 <xs:sequence/>
</xs:complexType>
<xs:element name="DTGeotagImageFileInfo" nillable="true" type="tns:DTGeotagImageFileInfo"/>

但是头文件数据类的属性没有出现在WSDL文件中。我如何让他们出现？

Answer 1

事实证明MessageContract属性必须有public setter才能被生成代码的代码看到：

public class DTGeotagImageFileInfo
{
    public long? GeotagID { get; set; }
    public string GeotagGuid { get; set; }
    public string ImageGuid { get; set; }
    public long GeotagFieldId { get; set; }
    public double Lat { get; set; }
    public double Lon { get; set; }
}

WSDL：

<xs:complexType name="DTGeotagImageFileInfo">
    <xs:sequence>
     <xs:element minOccurs="0" name="GeotagFieldId" type="xs:long"/>
     <xs:element minOccurs="0" name="GeotagGuid" nillable="true" type="xs:string"/>
     <xs:element minOccurs="0" name="GeotagID" nillable="true" type="xs:long"/>
     <xs:element minOccurs="0" name="ImageGuid" nillable="true" type="xs:string"/>
     <xs:element minOccurs="0" name="Lat" type="xs:double"/>
     <xs:element minOccurs="0" name="Lon" type="xs:double"/>
    </xs:sequence>
   </xs:complexType>
   <xs:element name="DTGeotagImageFileInfo" nillable="true"
       type="tns:DTGeotagImageFileInfo"/>

Answer 2

DataContracts / DataMembers上的服务合同访问修饰符不起任何作用。处理WCF消息时，.NET setter和getter visibility修饰符是无关紧要的，只要你相应地标记它们：

//Tag DataContract and DataMember for serialization
[DataContract]
public class DTGeotagImageFileInfo
{ 
    [DataMember]
    public long? GeotagID { get; internal set; }
    [DataMember]
    public string GeotagGuid { get; internal set; }
    [DataMember]
    public string ImageGuid { get; internal set; }
    [DataMember]
    public long GeotagFieldId { get; internal set; }
    [DataMember]
    public double Lat { get; internal set; }
    [DataMember]
    public double Lon { get; internal set; }
}

WCF MessageContract属性未显示在WSDL中

2 个答案: