one item of the list in xml data-CodePudding

I have this code: and i want to when i do the query to print one field in xml file.

I mean print only the field "Name"

How can i do that?

thanks

c#:


private void button1_Click(object sender, EventArgs e)
        {
            var name = textBox3.Text;
            XDocument doc = XDocument.Load(@"data.xml");

            var xpath = "//*[text()= ' "   name   "']";

            var result = ((IEnumerable)doc.XPathEvaluate(xpath)).Cast<XElement>().FirstOrDefault();
            var storeElement = doc.Descendants("store").Where(e => e.Attribute("rollNumer").Value == name).First();
            textBox1.Text = storeElement.Value;

        }

XML:

<?xml version="1.0" encoding="utf-8" ?>
<stores>
  <store rollNumer="170">
    <Name>Jonh</Name>
    <Color>Pink</Color>
    <Sell>Sugar</Sell>
  </store>

  <store rollNumer="120">
    <Name>Tedy</Name>
    <Color>Brown</Color>
    <Sell>Rice</Sell>
  </store>
</stores>

CodePudding user response：

Please try the following solution.

For your real scenario, just uncomment the .Load() method, and comment out the .Parse() method.

void Main()
{
    const string inputFile = @"e:\Temp\data.xml";
    //XDocument xdoc = XDocument.Load(inputFile);
    XDocument xdoc = XDocument.Parse(@"<stores>
      <store rollNumer='170'>
        <Name>Jonh</Name>
        <Color>Pink</Color>
        <Sell>Sugar</Sell>
      </store>

      <store rollNumer='120'>
        <Name>Tedy</Name>
        <Color>Brown</Color>
        <Sell>Rice</Sell>
      </store>
    </stores>");

    XElement helem = xdoc.Descendants("Name").FirstOrDefault();
    string output = helem .Value;
}

CodePudding user response：

Hope will help you

XDocument doc = XDocument.Load(inputFile);
string storeElement = string.Empty;
foreach (var item in doc.Descendants("store"))
{
    if (item.Attribute("rollNumer").Value == name)
    {
        storeElement = item.Descendants("Name").First().Value;
    }
}