对DatagridView列排序后显示正确的行号[C# WinForm]

// 获取当前排序的列和排序方式
DataGridViewColumn sortedColumn = dataGridView.SortedColumn;
SortOrder sortOrder = dataGridView.SortOrder;

// 清空行号
foreach (DataGridViewRow row in dataGridView.Rows)
{
    row.Cells["行号"].Value = "";
}

// 重新计算并显示正确的行号
for (int i = 0; i < dataGridView.Rows.Count; i++)
{
    DataGridViewRow row = dataGridView.Rows[i];
    row.Cells["行号"].Value = (i + 1).ToString();
}

// 根据排序方式重新排序行号列
if (sortedColumn != null)
{
    List<DataGridViewRow> sortedRows = dataGridView.Rows.Cast<DataGridViewRow>().OrderBy(r => r.Cells[sortedColumn.Name].Value).ToList();
    if (sortOrder == SortOrder.Descending)
    {
        sortedRows.Reverse();
    }

    for (int i = 0; i < sortedRows.Count; i++)
    {
        sortedRows[i].Cells["行号"].Value = (i + 1).ToString();
    }
}