一、添加复选框　

ArrayList arr = new ArrayList();    public string checkboxName = "选择";    void StandLibWin_Load(object sender, EventArgs e)        {            DataGridViewCheckBoxColumn CheckColunms = new DataGridViewCheckBoxColumn();            CheckColunms.Name = checkboxName;            CheckColunms.HeaderText = checkboxName;            CheckColunms.Width = 60;            CheckColunms.TrueValue = "1";            CheckColunms.FalseValue = "0";            dataGridView1.Columns.Insert(1, CheckColunms);            dataGridView1.CellContentClick += DataGridView1_CellContentClick;                  }

　　二、判断选中状态（此例添加一个ArrayList用来存储选中行的标识）

void dataGridView1_CellContentClick(object sender, DataGridViewCellEventArgs e)        {            if (e.RowIndex > -1)            {                if (dataGridView1.Columns[e.ColumnIndex].Name == checkboxName)                {                    arr.Clear();                    for (int i = 0; i < this.dataGridView1.Rows.Count; i++)                    {                        if ((bool)dataGridView1.Rows[i].Cells[checkboxName].EditedFormattedValue == true)                        {                            string vClickGridId = dataGridView1.Rows[i].Cells["标识"].Value.ToString();                            arr.Add(vClickGridId);                        }                    }                }            }        }

　　=================完结线==============================