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

Here is a very small solution for that issue:

    private void DataGridView_KeyDown(object sender, KeyEventArgs e)
    {
        //I use only one function for moving with the information
        //e.KeyCode == Keys.Up = move up, else move down
        if (e.KeyCode.Equals(Keys.Up) || e.KeyCode.Equals(Keys.Down))
        {
            MoveUpDown(e.KeyCode == Keys.Up);
        }
        e.Handled = true;
    }

    private void MoveUpDown(bool goUp)
    {
        try
        {
            int currentRowindex = DataGridView.SelectedCells[0].OwningRow.Index;

            //Here I decide to change the row with the parameter
            //True -1 or False +1
            int newRowIndex = currentRowindex + (goUp ? -1 : 1);

            //Here it must be ensured that we remain within the index of the DGV
            if (newRowIndex > -1 && newRowIndex < DataGridView.Rows.Count)
            {
                DataGridView.ClearSelection();
                DataGridView.Rows[newRowIndex].Selected = true;
            }
        }
        catch (Exception)
        {
            MessageBox.Show("Error");
        }

    }

Sorry, I thought my code was self-explanatory. I hope I made with the comments clear how I proceeded with that issue