Displaying XML Data in a word document format in Winform application

As per my understanding, you want to display data on form...
So, what you have to do?
1) create new windows form project
2) add 4 labels and 4 texboxes; change their names to undertandable names, such as: txtCompanyName, txtContactName, txtContactTitle, txtPhone
3) create custom class, for example:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Xml;
using System.Xml.Linq;
using System.Text;

public class Customer
{
    private string sCompanyName = string.Empty;
    private string sContactName = string.Empty;
    private string sContactTitle = string.Empty;
    private string sPhone = string.Empty;

    public Customer()
    {
     //do nothing
    }

    public Customer(string _CompanyName, string _ContactName, string _ContactTitle, string _Phone)
    {
        sCompanyName = _CompanyName;
        sContactName = _ContactName;
        sContactTitle = _ContactTitle;
        sPhone = _Phone;
    }

    public void LoadFromXml(string sFileName)
    {
        XDocument xDoc = XDocument.Load(sFileName);
        sCompanyName = xDoc.Root.Descendants().Where(n => n.Name == "CompanyName").Select(n => n.Value).FirstOrDefault();
        sContactName = xDoc.Root.Descendants().Where(n => n.Name == "ContactName").Select(n => n.Value).FirstOrDefault();
        sContactTitle = xDoc.Root.Descendants().Where(n => n.Name == "ContactTitle").Select(n => n.Value).FirstOrDefault();
        sPhone = xDoc.Root.Descendants().Where(n => n.Name == "Phone").Select(n => n.Value).FirstOrDefault();
    }

    public string CompanyName
    {
        get { return sCompanyName; }
        set { sCompanyName = value; }
    }

    public string ContactName
    {
        get { return sContactName; }
        set { sContactName = value; }
    }

    public string ContactTitle
    {
        get { return sContactTitle; }
        set { sContactTitle = value; }
    }

    public string Phone
    {
        get { return sPhone; }
        set { sPhone = value; }
    }
}

4) Now, add this code into Form1 class:

public partial class Form1 : Form
{
    Customer oCust = new Customer();
    public Form1()
    {
        InitializeComponent();
        string sFile = @"FullFileName.xml";
        oCust.LoadFromXml(sFile);
        this.txtCompanyName.Text = oCust.CompanyName;
        this.txtContactName.Text = oCust.ContactName;
        this.txtContactTitle.Text = oCust.ContactTitle;
        this.txtPhone.Text = oCust.Phone;
    }

Note: it's just - very basic - example! You can edit data, but nothing will be saved into xml. You need to provide method to change oCust object and save data into xml.

I'd suggest to read about:
1) XmlSerialization and XmlDeserialization[^] to be able to serialize xml to object and back to xml.
2) DataBindings[^]

Try!