C#如何在datagridview中聚焦所选项目

private void dataGridView1_SelectionChanged(object sender, EventArgs e)
{
    if (dataGridView1.SelectedRows.Count > 0)
    {
        dataGridView1.CurrentCell = dataGridView1.SelectedRows[0].Cells[0];
        dataGridView1.Focus();
    }
}

private void dataGridView1_CellClick(object sender, DataGridViewCellEventArgs e)
{
    if (e.RowIndex >= 0 && e.ColumnIndex >= 0)
    {
        dataGridView1.CurrentCell = dataGridView1.Rows[e.RowIndex].Cells[e.ColumnIndex];
        dataGridView1.Focus();
    }
}

private void dataGridView1_CurrentCellChanged(object sender, EventArgs e)
{
    if (dataGridView1.CurrentCell != null)
    {
        dataGridView1.CurrentCell = dataGridView1.CurrentCell;
        dataGridView1.Focus();
    }
}