c# dataGridView cell添加下拉框

应用场景：

　　dataGridView需要某一个cell变成下拉框样式。

思路详解：

　　dataGridVie添加固定格式的row。

代码：

                    DataGridViewRow row = new DataGridViewRow();

                    row.Cells.Add(new DataGridViewTextBoxCell());

                    DataGridViewComboBoxCell comboxcell = new DataGridViewComboBoxCell();

                    comboxcell.Items.Add("九");

                    comboxcell.Items.Add("平");

                    comboxcell.Items.Add("气");

                    comboxcell.Items.Add("阴");

                    comboxcell.Items.Add("阳");

                    comboxcell.Items.Add("痰");

                    comboxcell.Items.Add("气");

                    comboxcell.Items.Add("血");

                    comboxcell.Items.Add("特");

                    comboxcell.Items.Add("湿");

                    row.Cells.Add(comboxcell);

                    row.Cells.Add(new DataGridViewTextBoxCell());

                    row.Cells.Add(new DataGridViewTextBoxCell());

                    row.Cells.Add(new DataGridViewTextBoxCell());

                    dataGridView_pinggu.Rows.Add(row);

下拉框事件代码：

private void dataGridView_pinggu_EditingControlShowing(object sender, DataGridViewEditingControlShowingEventArgs e)

        {

            DataGridView dgv = sender as DataGridView;

            //判断相应的列

            if (dgv.CurrentCell.GetType().Name == "DataGridViewComboBoxCell" && dgv.CurrentCell.RowIndex != -1)

            {

                //给这个DataGridViewComboBoxCell加上下拉事件

                (e.Control as ComboBox).SelectedIndexChanged += new EventHandler(ComboBox_SelectedIndexChanged);

            }

        }

        public void ComboBox_SelectedIndexChanged(object sender, EventArgs e)

        {

            ComboBox combox = sender as ComboBox;

            //这里比较重要

            combox.Leave += new EventHandler(combox_Leave);

            try

            {

                //在这里就可以做值是否改变判断

                if (combox.SelectedItem != null)

                {

                    Console.WriteLine(combox.SelectedItem.ToString());

                    int manNum = ShuJuFenXiService.getNumBySexAndProjectID("0", tizhiDic[combox.SelectedItem.ToString()]);

                    int famNum = ShuJuFenXiService.getNumBySexAndProjectID("1", tizhiDic[combox.SelectedItem.ToString()]);

                    dataGridView_pinggu.Rows[1].Cells[1].Value = combox.SelectedItem.ToString();

                    dataGridView_pinggu.Rows[1].Cells[2].Value = manNum + famNum;

                    dataGridView_pinggu.Rows[1].Cells[3].Value = manNum;

                    dataGridView_pinggu.Rows[1].Cells[4].Value = famNum;

                    dataGridView_pinggu.Rows[1].Cells[5].Value = tizhiDic[combox.SelectedItem.ToString()];

                }

                Thread.Sleep(100);

            }

            catch (Exception ex)

            {

                MessageBox.Show(ex.Message);

            }

        }

        public void combox_Leave(object sender, EventArgs e)

        {

            ComboBox combox = sender as ComboBox;

            //做完处理，须撤销动态事件

            combox.SelectedIndexChanged -= new EventHandler(ComboBox_SelectedIndexChanged);

        }

难点：

　　1.注意dataGridView属性readOnly，设成false(界面模板设置))。要不然下拉框不显示。如果需要不可编辑，可以设定单元格的readOnly属性： dataGridView_pinggu.Rows[1].Cells[1].ReadOnly = true;

　　2.下拉框事件仅需给datagridview添加EditingControlShowing事件。

巴特西

c# dataGridView cell添加下拉框

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