Read XML Attribute using XmlDocument

Question

How can I read an XML attribute using C  s XmlDocument   I have an XML file which looks somewhat like this    lt  xml version  1 0  encoding  utf-8    gt   lt MyConfiguration xmlns  http   tempuri org myOwnSchema xsd  SuperNumber  1  SuperString  whipcream  gt       lt Other stuff   gt   lt  MyConfiguration gt     How would I read the XML attributes SuperNumber and SuperString   Currently I m using XmlDocument  and I get the values in between using XmlDocument s GetElementsByTagName   and that works really well  I just can t figure out how to get the attributes

User · Answer

XmlDocument Attributes perhaps   Which has a method GetNamedItem that will presumably do what you want  although I ve always just iterated the attribute collection

User · Answer

You can migrate to XDocument instead of XmlDocument and then use Linq if you prefer that syntax  Something like   var q    from myConfig in xDoc Elements  MyConfiguration            select myConfig Attribute  SuperString   Value            First

User · Answer

Assuming your example document is in the string variable doc   gt  XDocument Parse doc  Root Attribute  SuperNumber   1

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I have an Xml File books xml   lt ParameterDBConfig gt       lt ID Definition  1    gt   lt  ParameterDBConfig gt    Program   XmlDocument doc   new XmlDocument    doc Load  D  siva books xml    XmlNodeList elemList   doc GetElementsByTagName  ID         for  int i   0  i  lt  elemList Count  i               string attrVal   elemList i  Attributes  Definition   Value      Now  attrVal has the value of ID

User · Answer

You should look into XPath   Once you start using it  you ll find its a lot more efficient and easier to code than iterating through lists   It also lets you directly get the things you want   Then the code would be something similar to   string attrVal   doc SelectSingleNode   MyConfiguration  SuperNumber   Value    Note that XPath 3 0 became a W3C Recommendation on April 8  2014

User · Answer

If your XML contains namespaces  then you can do the following in order to obtain the value of an attribute   var xmlDoc   new XmlDocument        content is your XML as string xmlDoc LoadXml content    XmlNamespaceManager nsmgr   new XmlNamespaceManager new NameTable         make sure the namespace identifier  URN in this case  matches what you have in your XML  nsmgr AddNamespace  ns    urn oasis names tc SAML 2 0 protocol        get the value of Destination attribute from within the Response node with a prefix who s identifier is  urn oasis names tc SAML 2 0 protocol  using XPath var str   xmlDoc SelectSingleNode   ns Response  Destination   nsmgr   if  str    null        Console WriteLine str Value       More on XML namespaces here and here

User · Answer

XmlNodeList elemList   doc GetElementsByTagName       for  int i   0  i  lt  elemList Count  i          string attrVal   elemList i  Attributes  SuperString   Value

[c#] Read XML Attribute using XmlDocument

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