Question

I read data from xml file like this :

StringBuilder str = new StringBuilder();
str.Append("<News>");

XDocument xmlDoc = XDocument.Load(path);
var q = xmlDoc.Descendants("news")
 .Where(x => x.Descendants("language_id") != null && x.Descendants("language_id").First().Value == "2")
 .Select(x => x);

foreach (var st in q)
{
    str.Append(st.ToString(SaveOptions.DisableFormatting) + " ");
}

str.Append("</News>");
return str.ToString();

---

but I note recently that when the xml file updated. It still reads the data from the old one !!! I don’t know if it reads from a cashing copy or not .

When I reset the iis it updates the data .

How to fix this problem?

Answer 1

Quick hack.

Assuming path is a string containing a URL, change

XDocument xmlDoc = XDocument.Load(path);

to

XDocument xmlDoc = XDocument.Load(path + "?" + Guid.NewGuid().ToString(););

This will defeat any intermediate caching that’s going on, and the use of the ? in the URL shouldn’t upset the server you are asking for data.

(Guid.NewGuid() is just a quick way to get a random string. You could easily use the Random class or DateTime.Now.Ticks in a similar way if you prefer.)