按TAB键时,绕过DataGridView中的只读单元格

private void dataGridView1_KeyDown(object sender, KeyEventArgs e)
{
    if (e.KeyCode == Keys.Tab)
    {
        int currentRowIndex = dataGridView1.CurrentCell.RowIndex;
        int currentColumnIndex = dataGridView1.CurrentCell.ColumnIndex;

        bool isReadOnly = dataGridView1.Rows[currentRowIndex].Cells[currentColumnIndex].ReadOnly;

        if (isReadOnly)
        {
            if (e.Shift)
            {
                // 向前移动
                for (int i = currentColumnIndex - 1; i >= 0; i--)
                {
                    if (!dataGridView1.Rows[currentRowIndex].Cells[i].ReadOnly)
                    {
                        dataGridView1.CurrentCell = dataGridView1.Rows[currentRowIndex].Cells[i];
                        break;
                    }
                }
            }
            else
            {
                // 向后移动
                for (int i = currentColumnIndex + 1; i< dataGridView1.Columns.Count; i++)
                {
                    if (!dataGridView1.Rows[currentRowIndex].Cells[i].ReadOnly)
                    {
                        dataGridView1.CurrentCell = dataGridView1.Rows[currentRowIndex].Cells[i];
                        break;
                    }
                }
            }
        }
    }
}