Update XML with C# using Linq

Question

MY XML FILE STRUCTURE

  
    1
    True
    Star Wars Fi         


        

Answer 1

To update your xml use element method method of the XElement :

XDocument xmlDoc = XDocument.Load(HttpContext.Current.Server.MapPath("data.xml"));
var items = (from item in xmlDoc.Descendants("item")
            where item.Element("itemID").Value == itemID
            select item).ToList();
         foreach (var item in items)
         {
                item.Element("itemID").Value=NewValue;
                bool.Parse(item.Element("isGadget").Value)=Newvalue;
                item.Element("name").Value=Newvalue;
                item.Element("text1").Value=Newvalue;
         }
xmlDoc.Save(HttpContext.Current.Server.MapPath("data.xml"));

or

XDocument xmlDoc = XDocument.Load(HttpContext.Current.Server.MapPath("data.xml"));
             foreach (var item in (from item in xmlDoc.Descendants("item")
                where item.Element("itemID").Value == itemID
                select item).ToList())
             {
                    item.Element("itemID").Value=NewValue;
                    bool.Parse(item.Element("isGadget").Value)=Newvalue;
                    item.Element("name").Value=Newvalue;
                    item.Element("text1").Value=Newvalue;
             }
    xmlDoc.Save(HttpContext.Current.Server.MapPath("data.xml"));

you get information form dynamic and update those changes in button click event means, first you checks the Page load following code is present

if(!Page.IsPostBack) { .... }