jQuery read xml error

I am trying to write a simple location lookup call with jQuery and the yahoo maps service. i.e. A user puts a location into a search box and as they are tying jQuery calls a page on my site that returns the XML from yahoo.

Geocode.aspx.cs

protected void Page_Load(object sender, EventArgs e)
{
    var url= "http://local.yahooapis.com/MapsService/V1/geocode?appid=SjCk7UjV34H0L9VoW5dFEXFGvsQuKX0xwIPNBX.rY8XxrWZbIYeSScFGuMrJyen_QwGKpLk-&location=" + Request.QueryString["location"];

    var oBuilder = new StringBuilder();
    var oStringWriter = new StringWriter(oBuilder);
    var oXmlReader = new XmlTextReader(url);
    var oXmlWriter = new XmlTextWriter(oStringWriter);
    while (oXmlReader.Read())
    {
        oXmlWriter.WriteNode(oXmlReader, true);
    }
    oXmlReader.Close();
    oXmlWriter.Close();
    Response.Clear();
    Response.Write(oBuilder.ToString()); 
    Response.Flush();
    Response.End(); 
}

Geocode.aspx:

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Geocode.aspx.cs" Inherits="Search_Geocode" %>

My search page uses the following jQuery code to call this page:

function findAddress() {
    var address = document.getElementById('ctl00_ContentPlaceHolder1_Location').value;开发者_如何转开发

    if (address.length > 3) {
        $.ajax({
            type: "GET",
            url: "Geocode.aspx?location=" + address,
            dataType: "xml",
            success: function(xmlData) {
                $(xmlData).find('Result').each(function() {
                    document.getElementById('ctl00_ContentPlaceHolder1_Lat').value = $(this)[0].selectSingleNode('Latitude').text;
                    document.getElementById('ctl00_ContentPlaceHolder1_Long').value = $(this)[0].selectSingleNode('Longitude').text;
                    document.getElementById("locationspan").innerHTML = $(this)[0].selectSingleNode('Address').text + '<br />' + $(this)[0].selectSingleNode('City').text + '<br />' + $(this)[0].selectSingleNode('State').text;

                    var mapList = document.getElementById("divAddressSelector");
                    mapList.className = 'mapAddressSelectorHide';
                });
            },
            error: function(XMLHttpRequest, textStatus, errorThrown) {
                alert(XMLHttpRequest + '--' + textStatus + '--' + errorThrown);
            }
        });
    }
}

running this code produces a text box with the following text: undefinedparsererror--undefined

When I create an XML file from my geocode page and point the url of the jQuery to that instead everything works properly.

Thanks for any help.

Make sure you are setting the Response.ContentType from geocode.aspx as text/xml.

Tell your page that generates the xml to send the contentType as "txt/xml"

Response.ContentType="text/xml";

Well, after a few more hours of searching I have managed to find a solution. The problem was in the generation of the XML. Primarily HTTP status codes and other bits. So for anyone else looking for a solution to a problem like this:

Geocode.aspx.cs should look like this instead:

protected void Page_Load(object sender, EventArgs e)
{
    var url= "http://local.yahooapis.com/MapsService/V1/geocode?appid=SjCk7UjV34H0L9VoW5dFEXFGvsQuKX0xwIPNBX.rY8XxrWZbIYeSScFGuMrJyen_QwGKpLk-&location=" + Request.QueryString["location"];

    var oBuilder = new StringBuilder();
    var oStringWriter = new StringWriter(oBuilder);
    var oXmlReader = new XmlTextReader(url);
    var oXmlWriter = new XmlTextWriter(oStringWriter);
    while (oXmlReader.Read())
    {
        oXmlWriter.WriteNode(oXmlReader, true);
    }
    oXmlReader.Close();
    oXmlWriter.Close();


    // Remove all headers and data in the Response.
    Response.Clear();
    //set the mime type
    Response.ContentType = "text/xml";
    // Buffer output and send it out in one chunk.
    Response.BufferOutput = true;
    // Specify a successful HTTP status code.
    Response.StatusCode = 200;

    Response.Write(oBuilder.ToString()); 
}