C# countdown in datagridview

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C#2.0

C#

C#7.1

Hello Code Project members

what i want to do is when i press a button it will add data into datagridview
in that

TextHeaders - TextHeaders - CountdownHeaders
   John         Martin      09:54:30

the row that ends the countdown in this table will be added to a listbox

please help me with this, the code in most of the topics I found on the internet is missing or wrong

What I have tried:

i tried this code

        public Form1() 
        {
            InitializeComponent();
            label1.Text = DateTime.Now.ToString("dd-MM-yyyy HH:mm:ss");
            dispatcher.Enabled = true;
        }
        int i = 0;
private void dispatcher_Tick(object sender, EventArgs e)
        {
            DataTable dt = new DataTable();
            dt.Columns.AddRange(new DataColumn[]
            {
            new DataColumn("ID"),
            new DataColumn("Name"),
            new DataColumn("Message"),
            new DataColumn("CharactorCount")
            });
            dt.Rows.Add(1, "ABC", "This is sentence1.This is sentence2.This is sentence3", 60);
            dt.Rows.Add(2, "SKY", "This is sentence1.This is sentence2.This is sentence3", 60);
            dt.Rows.Add(3, "XYZ", "This is sentence1.This is sentence2.This is sentence3", 60);

            DataSet ds = new DataSet();
            int count = dt.Rows[0]["Message"].ToString().Split('.').Length;
            for (int i = 0; i < count; i++)
            {
                DataTable dtCopy = dt.Copy();
                for (int j = 0; j < dtCopy.Rows.Count; j++)
                {
                    dtCopy.Rows[j]["Message"] = dtCopy.Rows[j]["Message"].ToString().Split('.')[i] + ".";
                    dtCopy.Rows[j]["CharactorCount"] = Convert.ToInt32(dtCopy.Rows[j]["CharactorCount"]) / count;
                }

                ds.Tables.Add(dtCopy);
            }

            BindGrid(ds.Tables[i]);
            i++;
            if (i == count)
            {
                i = 0;
            }

            label1.Text = DateTime.Now.ToString("dd-MM-yyyy HH:mm:ss");
        }
        private void BindGrid(DataTable dt)
        {
            dataGridView1.DataSource = null;
            dataGridView1.AutoGenerateColumns = false;
            dataGridView1.Columns.Clear();
            dataGridView1.ColumnCount = dt.Columns.Count;

            dataGridView1.Columns[0].Name = "ID";
            dataGridView1.Columns[0].HeaderText = "ID";
            dataGridView1.Columns[0].DataPropertyName = "ID";

            dataGridView1.Columns[1].HeaderText = "Name";
            dataGridView1.Columns[1].Name = "Name";
            dataGridView1.Columns[1].DataPropertyName = "Name";

            dataGridView1.Columns[2].Name = "Message";
            dataGridView1.Columns[2].HeaderText = "Message";
            dataGridView1.Columns[2].DataPropertyName = "Message";

            dataGridView1.Columns[3].Name = "CharactorCount";
            dataGridView1.Columns[3].HeaderText = "Character Count";
            dataGridView1.Columns[3].DataPropertyName = "CharactorCount";

            dataGridView1.DataSource = dt;
            dataGridView1.AutoSizeColumnsMode = DataGridViewAutoSizeColumnsMode.Fill;
        }

I found this code on the internet