如何在asp.net c＃中将数据写入XML文件？

Question

I am trying to write the user input data to the XML file in asp.net/C#. the data will type in textbox.

The C# code:

int i = 0;
protected void submit(object sender,EventArgs e)
{
    XmlDocument xdoc = new XmlDocument();
    xdoc.Load(Server.MapPath("~/XMLFile1.xml"));
    Console.WriteLine(xdoc);
    XmlElement contact = xdoc.CreateElement("Contact");

    XmlAttribute Count = xdoc.CreateAttribute("Count");
    i = i + 1;
    Count.Value = i.ToString();

    XmlElement Name = xdoc.CreateElement("Name");
    XmlText xmlName = xdoc.CreateTextNode(name.Text);

    XmlElement EmailId = xdoc.CreateElement("EmailId");
    XmlText xmlemail = xdoc.CreateTextNode(emailId.Text);

    XmlElement Comments = xdoc.CreateElement("Comments");
    XmlText xmlcomment = xdoc.CreateTextNode(comments.Text);

    Name.AppendChild(xmlName);
    EmailId.AppendChild(xmlemail);
    Comments.AppendChild(xmlcomment);

    contact.Attributes.Append(Count);
    contact.AppendChild(Name);
    contact.AppendChild(EmailId);
    contact.AppendChild(Comments);

    xdoc.DocumentElement.AppendChild(contact);

    xdoc.Save(Server.MapPath("~/XMLFile1.xml"));

    Response.Redirect(Request.Url.AbsoluteUri);
}

No errors are displaying not storing the values.

Answer 1

Hope in the below code, runtime error was throwing.

xdoc.Load(Server.MapPath("~/XMLFile1.xml"));

2 reasons for the error.

1. XMLFile1.xml not available in the root directory.
2. Basic xml structure not available in the xml file.

Basic xml structure:

<?xml version="1.0" encoding="utf-8"?>
<Contacts>

</Contacts>