I've created a [WebMethod]
on ASP.NET Web Service which reads XML documents from different web services (ASP.NET and PHP services).
Once the documents are read, they are merged into a XML and returned.
The method can successfully read XML documents from each web service but when I try to append second XML into first one, I get ArgumentException
and a message like this The node to be inserted is from a different document context.
I can't find a problem, can it be something to do with the source of document? but then both document are exactly same (have same elements).
Why ArgumentException
? What am I missing?
[WebMethod]
public XmlDocument getRestaurants(String search_keywords)
{
XmlDocument xmlDom1 = new XmlDocument();
xmlDom1 = getRestaurantFromAspNetWS(search_keywords);
XmlTextReader myXmlTextReader =
new XmlTextReader
("http://some-iss.green.com/username/search.php?s=" + search_keywords);
XmlDocument xmlDom2 = new XmlDocument();
xmlDom2.Load(myXmlTextReader);
foreach (XmlElement xmlNode in xmlDom2.DocumentElement.ChildNodes)
{
//trying to append childNodes of xmlDom2 into xmlDom1
//and this is where i get ArgumentException
xmlDom1.DocumentElement.AppendChild(xmlNode);
}
return xmlDom1;
}
您需要使用importNode()导入节点,如下所示:
xmlDom1.DocumentElement.importNode(xmlNode, true);
Can you write it like this?
public XElement getRestaurants(String search_keywords)
{
XElement result = getRestaurantFromAspNetWS(search_keywords);
XmlTextReader myXmlTextReader = new XmlTextReader
("http://some-iss.green.com/username/search.php?s=" + search_keywords);
XElement reader = XElement.Load(myXmlTextReader);
foreach (XElement child in reader.Elements())
result.Add(child);
return result;
}
The real trick is getting your custom getRestaurantFromAspNetWS
function to return a XElement instead of a XmlDocument, as you didn't provide us with that function, I can't help you there.
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