How to move gridview selected row up/down on KeyUp or Keydown press

Question

1. The user selects one row
2. there will be up arrow and down arrow.

Answer 1

    dataGridView1.SelectionMode = DataGridViewSelectionMode.FullRowSelect;//FullRowSelect
     int selectedrowindexindgv2 =-1;
      private void moveUp()
            {
                if (dataGridView2.RowCount <= 0)
                    return;
    
                if (dataGridView2.SelectedRows.Count <= 0)
                    return;
    
                if (selectedrowindexindgv2 <= 0)
                    return;
    
                DataGridViewRowCollection rows = dataGridView2.Rows;
    
                // remove the previous row and add it behind the selected row.
                DataGridViewRow prevRow = rows[selectedrowindexindgv2 - 1];
                rows.Remove(prevRow);
                prevRow.Frozen = false;
                rows.Insert(selectedrowindexindgv2, prevRow);
                dataGridView2.ClearSelection();
                dataGridView2.Rows[selectedrowindexindgv2 - 1].Selected = true;
                selectedrowindexindgv2 -= 1;
                return;
            }
    
            private void moveDown()
            {
                try
                {
                    if (dataGridView2.RowCount <= 0)
                        return;
    
                    if (dataGridView2.SelectedRows.Count <= 0)
                        return;             
    
                    if (selectedrowindexindgv2 == dataGridView2.Rows.Count - 1) // Here used 1 instead of 2
                        return;
    
                    DataGridViewRowCollection rows = dataGridView2.Rows;
                    // remove the next row and add it in front of the selected row.
                    DataGridViewRow nextRow = rows[selectedrowindexindgv2 + 1];
                    rows.Remove(nextRow);
                    nextRow.Frozen = false;
                    rows.Insert(selectedrowindexindgv2, nextRow);
                    dataGridView2.ClearSelection();
                    dataGridView2.Rows[selectedrowindexindgv2 + 1].Selected = true;
                    selectedrowindexindgv2 += 1;
                }catch(Exception) { }
    
            }
    
       private void dataGridView2_CellClick(object sender, DataGridViewCellEventArgs e)
            {
                if (dataGridView2.Rows.Count > 0 && e.RowIndex >= 0 && e.ColumnIndex >= 0)
                {
                    try
                    {
                        selectedrowindexindgv2 = e.RowIndex;
    }
  private void pictureBox6Up_Click(object sender, EventArgs e)
        {
            moveUp();
        }

        private void pictureBox7Down_Click(object sender, EventArgs e)
        {
            moveDown();
        }