test

 private void открытьToolStripMenuItem_Click(object sender, EventArgs e)
        {
            OpenFileDialog OFD = new OpenFileDialog();
            OFD.DefaultExt = "*.txt";
            OFD.Filter = "TXT (*.txt*)|*.txt";
            OFD.Title = "Выберите документ для загрузки данных";
            if (OFD.ShowDialog() == DialogResult.OK)
            {
                MessageBox.Show(OFD.FileName);
            }
            string filename = OFD.FileName;
            string[] test = File.ReadAllLines(filename);
            int a = 0;
            string[] elements;
            decimal[] h = new decimal[test.Length];
            decimal[] V = new decimal[test.Length];
            decimal[] F = new decimal[test.Length];
            decimal[] t = new decimal[test.Length];
            for (a = 0; a < test.Length; a++)
            {
                elements = test[a].Split('\t');
                h[a] = Convert.ToDecimal(elements[0]);
                V[a] = Convert.ToDecimal(elements[1]);
                F[a] = Convert.ToDecimal(elements[2]);
                t[a] = Convert.ToDecimal(elements[3]);

            }
        }