how to change xml value file using c#

Hi,

How can I change one value (attribute) in xml file, using C#/

Thanks,

From stackoverflow

• http://www.developer.com/net/csharp/article.php/3489611

  JaredPar : FYI: It's usually considered bad practice to give an answer consisting of only a link. Typically people add a summary wit the link. Doesn't make much of a difference for me but some users will down vote for link only answers.

  Strelok : Mike, if you didn't understand this link or it didn;t "satisfy" your needs. I'm sorry, but you probably should not be programming!

  George Stocker : @Mike I have to agree with the others on this one. What you're asking is a very basic thing, so it would behoove you to show us what you've tried before posting something negative about someone's answer.

  IrishChieftain : THis was the first link that came back from Google when I used Mike's question verbatim as a search query in Google. If that didn't solve the problems, then Mike needs to be more specific. Lighten up guys, its Christmas :-)

  JaredPar : @IrishChiefain, I was attempting to be helpful vs. critical.

• Using LINQ to xml if you are using framework 3.5:

  using System.Xml.Linq;

  XDocument xmlFile = XDocument.Load("books.xml");

  var query = from c in xmlFile.Elements("catalog").Elements("book")

  select c;

  foreach (XElement book in query)

  {

  book.Attribute("attr1").Value = "MyNewValue";

  }

  xmlFile.Save("books.xml");

• Mike; Everytime I need to modify an XML document I work it this way:

      //Here is the variable with which you assign a new value to the attribute
      string newValue = string.Empty 
      XmlDocument xmlDoc = new XmlDocument();
  
      xmlDoc.Load(xmlFile);
  
      XmlNode node = xmlDoc.SelectSingleNode("Root/Node/Element");
      node.Attributes[0].Value = newValue;
  
      xmlDoc.Save(xmlFile);
  
      //xmlFile is the path of your file to be modified
  

  I hope you find it useful