List<ProtocolInfo> list = piDB.FindAll().ToList(); //都懂吧

for (int i = ; i < list.Count; i++)

{

    List<string> tempList = new List<string>(GetDirFiles(list[i].name)).Select(a => Path.GetFileName(a)).ToList();    ///获取 需要显示的集合（可不用理会）

    this.Invoke(new MethodInvoker(() =>

    {

        int index = this.skinDataGridView1.Rows.Add();     //添加新行

        this.skinDataGridView1.Rows[index].Cells[].Value = list[i].id;   //第一个单元格赋值

        this.skinDataGridView1.Rows[index].Cells[].Value = list[i].name;  //第二个单元格赋值

        this.skinDataGridView1.Rows[index].Cells[].Value = list[i].port;  //第三个单元格赋值

        this.skinDataGridView1.Rows[index].Cells[].Value = list[i].help; //  第四个单元格赋值

        this.skinDataGridView1.Rows[index].Cells[].Value = false; //  第五个 checkbox 复制

        for (int ii = ; ii < skinDataGridView1.ColumnCount; ii++)

        {

            DataGridViewCellStyle dataGridViewCellStyle1 = new DataGridViewCellStyle();      //声明一个 配置项

            dataGridViewCellStyle1.NullValue = "需要显示的默认值";          //为空值时需要显示的值 

            DataGridViewComboBoxCell dgCell = new DataGridViewComboBoxCell();

            dgCell.DisplayStyle = DataGridViewComboBoxDisplayStyle.Nothing;

            dgCell.Items.AddRange(tempList.Where(a => a.Substring(, ) == (ii - ).ToString()).ToArray());

            dgCell.Style = dataGridViewCellStyle1;

            this.skinDataGridView1.Rows[index].Cells[ii] = dgCell;

        }

    }));

}