嘗試了很多種方案，由于Datagrid動態生成的每行父子comboBox的Name的不確定性，給父ComboBox綁定事件中獲取 子ComboBox很難根據Name獲取到。

花了不少時間和公司同事商討，最終方案如下：

注:父子combobox分別代表： 主行業/子行業

private void CurrentRowIndusrtylist_SelectionChanged(object sender, SelectionChangedEventArgs e){ComboBox combobox = sender as ComboBox;//獲取另一個conbox控件CurrentRowIndusrtylist = (sender as ComboBox);if (CurrentRowIndusrtylist != null){ DataGridCell dg = (DataGridCell)(CurrentRowIndusrtylist.Parent);//關鍵用法if (DataGridRow.GetRowContainingElement(dg) != null){ CurrentRowIndusrtySublist = this.dataGrid9.Columns[3].GetCellContent(DataGridRow.GetRowContainingElement(dg)) as ComboBox;//關鍵用法if (CurrentRowIndusrtySublist != null) BindSubIndusrtyCodes();//動態去綁定子combobox}}}private void BindSubIndusrtyCodes(){if (CurrentRowIndusrtylist.SelectedItem != null){var unitIndusrtyItem = CurrentRowIndusrtylist.SelectedItem as System_IndustryCodes;_db.Load(_db.GetIndustryCodesQuery(), op =>{CurrentRowIndusrtySublist.Items.Clear();CurrentRowIndusrtySublist.Items.Add(new System_IndustryCodes { ID = -1, IndustryCodes = "--請選擇子行業--" });IEnumerable<System_IndustryCodes> tempsubList = op.Entities.Where(q => q.ParentCodeID == unitIndusrtyItem.ID);foreach (var temp in tempsubList){if (temp == null)return;CurrentRowIndusrtySublist.Items.Add(new System_IndustryCodes { ID = temp.ID, IndustryCodes = temp.IndustryCodes });}CurrentRowIndusrtySublist.DisplayMemberPath = "IndustryCodes";CurrentRowIndusrtySublist.SelectedValuePath = "ID";CurrentRowIndusrtySublist.UpdateLayout();if (CurrentRowIndusrtySublist.Items.Count == 1)CurrentRowIndusrtySublist.SelectedIndex = 0;elseCurrentRowIndusrtySublist.SelectedIndex = 1;//if (_OldSubindustryId != 0)//CurrentRowIndusrtySublist.SelectedItem = (from q in CurrentRowIndusrtySublist.Items where (q as System_IndustryCodes).ID == _OldSubindustryId select q).FirstOrDefault();//默認選擇項-子行業}, null);}}

?

最終效果：

轉載于:https://www.cnblogs.com/x-poior/p/4897353.html

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