如何在xml文件中保存属性值？

Question

I'm trying to save a value in my xml file. In the code below, the line "s.Attribute("Value").Value = value; break;" executes and the file is saved but it doesn't change the value of the attribute

     public void CustomSettingXML_WriteValue(string key, string value)
    {

        XDocument doc = XDocument.Load(xmlFile);

        var elements = from x in XElement.Load(xmlFile).Elements("Item") select x;

        foreach (var s in elements)
        {
            if (s.Attribute("Text").Value == key)
            {
                s.Attribute("Value").Value = value; 
                doc.Save(@xmlFile);                    
               break;
            }
        }
    }

Answer 1

There are in fact two things that might have to vary.

a) You are reading the Xml using XDocument.Load as well as XElement.Load. While altering, you are using Elements, and while saving you are using XDocument.

b) Since hierarchy in XML is (Items.Item), it would be better you use Descendants to parse the elements.

Full Code

public void CustomSettingXML_WriteValue(string key, string value)
{
    XDocument doc = XDocument.Load(xmlFile);
    var elements = from x in doc.Descendants("Item") select x;
    foreach (var s in elements)
    {

        if (s.Attribute("Text").Value == key)
        {
            s.Attribute("Value").Value = value; 
            doc.Save(@xmlFile);                    
           break;
        }
    }
}