DataGridView中实现点击单元格Cell动态添加自定义控件

柔情只为你懂 2023-10-11 00:56 3阅读 0赞

## 场景 ##

鼠标点击DataGridView的某个单元格时，此单元格添加一个自定义的控件，这里以

添加下拉框为例

### 效果 ###

![20191101135330662.gif][]

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## 实现 ##

在设计器页面，找到DataGridView的单元格点击事件CellClick,然后双击进入其点击事件中

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0JBREFPX0xJVU1BTkdfUUlaSEk_size_16_color_FFFFFF_t_70][]

private void dataGridView_Task_ViewEdit_CellClick(object sender, DataGridViewCellEventArgs e)
            {
                //获取当前点击的列的index
                int currentColumnindex = dataGridView_Task_ViewEdit.CurrentCell.ColumnIndex;
                //获取当前行的index
                int currentRowindex = dataGridView_Task_ViewEdit.CurrentCell.RowIndex;
                switch (currentColumnindex)
                {
                    case 2:
                        //第三列-控制模式
                        Cell2Click(currentColumnindex,currentRowindex);
                        break;
                    case 3:
                        //第四列-跳转条件
                        break;
                    case 4:
                        //第五列-记录条件
                        break;
                    case 5:
                        //第六列-电流量程
                        break;
                    default:
                        break;
                }
            }

然后在通过当前列的Index判断是那一列，再执行具体的操作，添加不同的控件。

这里操作第三列，然后执行方法Cell2Click，并将当前行与列的index传递。

private void Cell2Click(int currentColumnindex, int currentRowindex)
            {
                //下拉框控件
                DevExpress.XtraEditors.ComboBoxEdit comboBox = new DevExpress.XtraEditors.ComboBoxEdit();  //添加ComboBox
                comboBox.Name = "ControlModel_ComBox";
                ComboBoxItemCollection coll = comboBox.Properties.Items;
                //添加
                this.dataGridView_Task_ViewEdit.Controls.Add(comboBox);
                //获取当前单元格的内容
                string currentCellValue = this.dataGridView_Task_ViewEdit.Rows[currentRowindex].Cells[currentColumnindex].Value.ToString();
                //清空单元格内容
                this.dataGridView_Task_ViewEdit.Rows[currentRowindex].Cells[currentColumnindex].Value = String.Empty;
                //获取大小
                Rectangle rect = dataGridView_Task_ViewEdit.GetCellDisplayRectangle(currentColumnindex, currentRowindex, true);
                //大小设置
                comboBox.Size = new Size((rect.Width / 3), rect.Height);
                //位置设置
                comboBox.Location = new Point(rect.Left, rect.Top);
               
                //根据配置文件获取下拉框items选项
                int i=0;
                List<ControlModelItem> controlModelItems = TaskViewEditHelper.GetComboBoxItems(System.IO.Path.Combine(Global.AppConfig.SysConfigPath, Global.CONTROL_MODEL_ITEMS_FILE_PATH));
                foreach(ControlModelItem controlModelItem in controlModelItems)
                {
                    coll.Add(controlModelItem);
                    if (controlModelItem.Value == currentCellValue)
                        comboBox.SelectedIndex = i;
                    i++;
                }
                //通过下面可以获取选中项的内容
                if (comboBox.SelectedItem != null)
                {
                    string key = (comboBox.SelectedItem as ControlModelItem).Key;
                    string value = (comboBox.SelectedItem as ControlModelItem).Value;
                }
               
                //绑定事件--控制模式下拉框选项改变
                comboBox.SelectedValueChanged += comboBox_SelectedValueChanged;
            }

这里是添加了一个DevExpress的下拉框控件ComboBoxEdit控件，并添加下拉框选项，然后绑定下拉框内容改变的事件comboBox\_SelectedValueChanged。

同理在改变下拉框选项的事件中在分别实现添加控件

private void comboBox_SelectedValueChanged(object sender, EventArgs e)
            {
                int controlCount = this.dataGridView_Task_ViewEdit.Controls.Count;
                //初始化会有三个控件
                if (controlCount>3)
                {
                    for (int i = 3; i < controlCount; i++)
                    {
                        //删除第三个之后的控件，删除后索引减1 所以循环删除第四个控件
                        this.dataGridView_Task_ViewEdit.Controls.RemoveAt(3);
                    }
                }
                DevExpress.XtraEditors.ComboBoxEdit comboBox = sender as ComboBoxEdit;
                ControlModelItem controlModelItem = comboBox.SelectedItem as ControlModelItem;
                string controlModelItemkey = controlModelItem.Key;
                switch (controlModelItemkey)
                {
                    //恒压
                    case "ConstantVoltage":
                        int currentColumnindex = dataGridView_Task_ViewEdit.CurrentCell.ColumnIndex;
                        int currentRowindex = dataGridView_Task_ViewEdit.CurrentCell.RowIndex;
    
                        TextEdit textEdit = new TextEdit();
                        textEdit.Name = "ControlMode_ConstantVoltage_textEdit";
                        this.dataGridView_Task_ViewEdit.Controls.Add(textEdit);
                       
                        //获取大小
                        Rectangle rect = dataGridView_Task_ViewEdit.GetCellDisplayRectangle(currentColumnindex, currentRowindex, true);
                        //大小设置
                        textEdit.Size = new Size((rect.Width / 6) + Global.CONTROL_DISTANCE, rect.Height);
                        //位置设置
                        textEdit.Location = new Point(rect.Left + (rect.Width / 3), rect.Top);
    
                        LabelControl label = new LabelControl();
                        label.Name = "ControlMode_ConstantVoltage_label";
                        this.dataGridView_Task_ViewEdit.Controls.Add(label);
                        label.Text = "V";
                        //位置设置
                        label.Location = new Point(rect.Left + (rect.Width / 3) + (rect.Width / 6) + Global.CONTROL_DISTANCE * 2, rect.Top + Global.LABEL_FROM_TOP_DISTANCE);
                        break;
                    case "Shelve":
                        break;
                    case "ConstantCurrent":
                        break;
                    case "ConstantPower":
                        break;
                    case "ConstantLoad":
                        break;
                    case "Cycle":
                        break;
                    case "CurrentSlope":
                        break;
                    case "CurrentLadder":
                        break;
                    case "ConstantVoltageLimitCurrent":
                        break;
                    case "CurrentPulse":
                        break;
                    case "WorkingConditionSimulation":
                        break;
                    case "PowerRamp":
                        break;
                    case "PowerLadder":
                        break;
                    default:
                        break;
                }
            }

[20191101135330662.gif]: https://img-blog.csdnimg.cn/20191101135330662.gif
[https_blog.csdn.net_badao_liumang_qizhi]: https://blog.csdn.net/badao_liumang_qizhi
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