I want to get the value from XML file but I failed. Can you please help me point out the problem ?? Because I already tried very hard to test and googling but I still can't spot the problem.
XML :
<?xml version="1.0" encoding="utf-8" ?>
<Contacts>
- <Contact>
<ID>xxx</ID>
<AutoUpdateEnabled>false</AutoUpdateEnabled>
<LastChanged>2013-05-29T01:53:59.4470000Z</LastChanged>
- <Profiles>
- <Personal>
<FirstName>My First Name</FirstName>
<LastName>My Last Name</LastName>
<UniqueName>My Unique Name</UniqueName>
<SortName></SortName>
<DisplayName>My Display Name</DisplayName>
</Personal>
</Profiles>
- <Phones>
- <Phone>
<ID>3</ID>
<PhoneType>Mobile</PhoneType>
<Number>000-0000000</Number>
<IsIMEnabled>false</IsIMEnabled>
<IsDefault>false</IsDefault>
</Phone>
</Phones>
- <Locations>
- <Location>
<ID>2</ID>
<LocationType>Business</LocationType>
<CompanyName></CompanyName>
<IsDefault>false</IsDefault>
</Location>
</Locations>
</Contact>
- <Contact>
<ID>xxx</ID>
<AutoUpdateEnabled>false</AutoUpdateEnabled>
<LastChanged>2013-05-29T01:53:25.2670000Z</LastChanged>
- <Profiles>
- <Personal>
<FirstName>Person</FirstName>
<LastName>Two</LastName>
<UniqueName></UniqueName>
<SortName></SortName>
<DisplayName>Person Two</DisplayName>
</Personal>
</Profiles>
- <Emails>
- <Email>
<ID>1</ID>
<EmailType>Personal</EmailType>
<Address>MyTest@gmail.com</Address>
<IsIMEnabled>false</IsIMEnabled>
<IsDefault>true</IsDefault>
</Email>
</Emails>
- <Locations>
- <Location>
<ID>2</ID>
<LocationType>Business</LocationType>
<CompanyName>Testing Company</CompanyName>
<IsDefault>false</IsDefault>
</Location>
</Locations>
</Contact>
</Contacts>
My Sample Code :
XmlDocument xmldoc = new XmlDocument();
xmldoc.LoadXml("TheXMLFile.xml");
xmldoc.DocumentElement.SelectNodes("contact") // return 0 counts
xmldoc.DocumentElement.SelectNodes("/contact") // return 0 counts
xmldoc.DocumentElement.SelectNodes("/contact") // return 0 counts
xmldoc.DocumentElement.SelectNodes("/contacts/contact") // return 0 counts
xmldoc.DocumentElement.SelectNodes("*") // return 2 counts !this works
XmlNodeList elemList = xmldoc.DocumentElement.GetElementsByTagName("contact"); // return 2 counts !this also works
foreach (XmlNode node in elemList)
{
node.SelectSingleNode("Profiles") //return ""
node.SelectSingleNode("/Profiles") //return ""
node.SelectSingleNode("//Profiles") //return ""
node.SelectSingleNode(".//Profiles") //return ""
}
I just want to get "FirstName, LastName, Email Address", the SelectNodes
function just not working like expected... No clue at all ... please help. Thanks in advance
You need something like this:
XmlDocument xmldoc = new XmlDocument();
xmldoc.Load(@"D:\temp\contacts.xml"); // use the .Load() method - not .LoadXml() !!
// get a list of all <Contact> nodes
XmlNodeList listOfContacts = xmldoc.SelectNodes("/Contacts/Contact");
// iterate over the <Contact> nodes
foreach (XmlNode singleContact in listOfContacts)
{
// get the Profiles/Personal subnode
XmlNode personalNode = singleContact.SelectSingleNode("Profiles/Personal");
// get the values from the <Personal> node
if (personalNode != null)
{
string firstName = personalNode.SelectSingleNode("FirstName").InnerText;
string lastName = personalNode.SelectSingleNode("LastName").InnerText;
}
// get the <Email> nodes
XmlNodeList emailNodes = singleContact.SelectNodes("Emails/Email");
foreach (XmlNode emailNode in emailNodes)
{
string emailTyp = emailNode.SelectSingleNode("EmailType").InnerText;
string emailAddress = emailNode.SelectSingleNode("Address").InnerText;
}
}
With this approach, you should be able to read all the data you need properly.
The XML tags are case dependent so contact != Contact.
Change this for a start.
The issue is that SelectNodes method takes a XPath expression that is case sensitive.
XmlDocument xmldoc = new XmlDocument();
xmldoc.Load("TheXMLFile.xml");
Console.WriteLine($"Contact: {xmldoc.DocumentElement.SelectNodes("Contact").Count}"); // return 2
Console.WriteLine($"/Contact: {xmldoc.DocumentElement.SelectNodes("/Contact").Count}"); // return 0, and it is the expected!
Console.WriteLine($"//Contact: {xmldoc.DocumentElement.SelectNodes("//Contact").Count}"); // return 2
foreach (XmlNode firstName in xmldoc.DocumentElement.SelectNodes("//Profiles/Personal/FirstName"))
{
Console.WriteLine($"firstName {firstName.InnerText}");
}
In the code above you can see 2 first names, "My First Name" and "Person". I just change the first char to upper case "contact" -> "Contact".
来源:https://stackoverflow.com/questions/16889895/c-sharp-xmldocument-selectnodes-is-not-working