xmlDeser/Vlimport/Form1.cs

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using System.IO;

namespace Vlimport
{
    public partial class mainForm : Form
    {

        List<Operations> operations = new List<Operations>();
        
        public mainForm()
        {
            InitializeComponent();

            openFileDialog1.Filter = "Text files(*.xml)|*.xml|All files(*.*)|*.*";
            

        }

        private void SelectButton_Click(object sender, EventArgs e)
        {
            //ItemList.Items.Clear();
            if (openFileDialog1.ShowDialog() == DialogResult.Cancel)
                return;
            // получаем выбранный файл
            string filename = openFileDialog1.FileName;
            // читаем файл в строку
            string fileText = System.IO.File.ReadAllText(filename);

            FilePathBox.Text = filename.ToString();
            Transporter tr = new Transporter();
            tr.CollectItems(filename, ItemList);
        }
    }
}