wpf ComboBox 绑定数据_wpf combox数据绑定

ComboBox 绑定 DataTable 数据

DeviceTypeViewModel deviceTypeModel = new DeviceTypeViewModel();
this.parentIdTxt.ItemsSource = deviceTypeModel.GetDeviceType().DefaultView;
this.parentIdTxt.DisplayMemberPath = "name";
this.parentIdTxt.SelectedValuePath = "id";

但我们经常会在诸如分类时添加顶级分类选项，所以我是这样做的，先把数据加入Dictionary，在使用Dictionary作为数据源

public Dictionary<int, string> ComboboxItem()
        {
            DataTable deviceTypes = GetDeviceType();
            Dictionary<int, string> items = new Dictionary<int, string>();
            items.Add(0, "顶级分类");
            foreach (DataRow row in deviceTypes.Rows)
            {
                items.Add(Convert.ToInt32(row["id"]), row["name"].ToString());
            }
            return items;
        }

DeviceTypeViewModel deviceTypeModel = new DeviceTypeViewModel();
Dictionary<int, string> items = deviceTypeModel.ComboboxItem();
this.parentIdTxt.ItemsSource = items;
this.parentIdTxt.DisplayMemberPath = "Value";
this.parentIdTxt.SelectedValuePath = "Key";