Question

Why is it when I do this:

    private void button18_Click(object sender, EventArgs e)
    {

        string uri1 = "http://localhost:8000/Service/GetMessage/{anything}";
        string tagUri = uri1.Replace("{anything}", textBox21.Text);
        XDocument xDoc = XDocument.Load(tagUri);
        var MessageID = xDoc.Descendants("Message")
                             .Select(n => new
                             {
                                 MessageID = n.Element("MessageID").Value,
                             })
            .ToString();

        textBox1.Text = MessageID;

I get this really strange output?

System.Linq.Enumerable+WhereSelectEnumerableIterator`2[System.Xml.Linq.XElement,<>f__AnonymousType7`1[System.String]]

But yet when I change ToString to ToList and use:

dataGridView10.DataSource = MessageID;

It displays it correctly? Really struggling to find out a way to take my incoming GET request to string?

Answer 1

Your LINQ query is getting a collection by nature of the call to .Descendants. If there’s only one, you can use a .Single() or .First() or .FirstOrDefault() to get the only (or First) item in the list.

Then it would be

textbox1.Text = MessageID.MessageID;

Though you more likely want to do something like this:

var MessageId = xDoc.Element("Message").Element("MessageID").Value;

But I’m somewhat guessing, as I don’t know the format or content of your XML.