C＃：显式命名空间中生成的XML没有出现

Question

下面的C＃代码生成一个XML文件：

XmlDocument requestXML = new XmlDocument(); 

    XmlDeclaration declaration = requestXML.CreateXmlDeclaration("1.0", "utf-8", null); 
    requestXML.AppendChild(declaration); 

    XmlElement soapEnvelope = requestXML.CreateElement("soap:Envelope"); 

    soapEnvelope.SetAttribute("xmlns:xsi", "http://www.w3.org/2001/XMLSchema-instance"); 
    soapEnvelope.SetAttribute("xmlns:xsd", "http://www.w3.org/2001/XMLSchema"); 
    soapEnvelope.SetAttribute("xmlns:soap", "http://schemas.xmlsoap.org/soap/envelope/"); 

我看到在requestXML.OuterXML XML显示

<Envelope ...> 

而不是

<soap:Envelope ...> 

正如我所料。我究竟做错了什么？

Answer 1

也许你可以尝试CreateElement重载，它将命名空间uri作为参数＃2。