WCF MessageHeader不会写入命名空间

Question

我有这段代码，由于某种原因，它没有写出名称或命名空间或属性

public class MultiSpeakHeader : MessageHeader
{
    protected override void OnWriteHeaderContents(XmlDictionaryWriter writer, MessageVersion messageVersion)
    {
        writer.WriteAttributeString("AppName", "A");
        writer.WriteAttributeString("AppVersion", "1");
        writer.WriteAttributeString("CSUnits", "feet");
    }

    public override string Name
    {
        get { return "MultiSpeakMsgHeader"; }
    }

    public override string Namespace
    {
        get { return "http://www.multispeak.org/Version_3.0"; }
    }
}

该类实例的结果如下：

<MultiSpeakHeader xmlns="http://schemas.datacontract.org/2004/07/my.app" xmlns:i="http://www.w3.org/2001/XMLSchema-instance"/>

我需要这个：

<MultiSpeakMsgHeader xmlns="http://www.multispeak.org/Version_3.0" AppName="A" AppVersion="1" CSUnits="feet" /> 

代码使用：

AddressHeader[] header = { AddressHeader.CreateAddressHeader(new MultiSpeakHeader()) };

Answer 1

我可以添加属性，但根节点需要有前缀。我试图避免它但不成功。

writer.WriteXmlnsAttribute("test", this.Namespace);
writer.WriteAttributeString("AppName", "A");
writer.WriteAttributeString("AppVersion", "1");
writer.WriteAttributeString("CSUnits", "feet");