DcDropDownList控件

DcControl.dll文件添加到VS工具箱，再从工具箱中拉动控件到页面，完成创建控件。

方法:

• SetData()
  • DataTable绑定数据，DataTable是一个由三列组成的数据表包含ID列、ParentID列、名称列，设定一级ParentID值，AppendListItems 绑定静态项，SelectedId 下拉菜单选中值。
  • List绑定数据，AppendListItems 绑定静态项，SelectedId 下拉菜单选中值。

示例:

private void DataBind()
{
        List<DcControl.DataList> lists = new List<DcControl.DataList>();

        List<DcControl.DataList.optgroupChild> dlcs = new List<DcControl.DataList.optgroupChild>();
        dlcs.Add(new DcControl.DataList.optgroupChild()
        {
        ItemValue = "1",
        ItemText = "北京"
        });
        lists.Add(new DcControl.DataList()
        {
        optgroupText = "北京市",
        child = dlcs
        });

        dlcs = new List<DcControl.DataList.optgroupChild>();
        dlcs.Add(new DcControl.DataList.optgroupChild()
        {
        ItemValue = "2",
        ItemText = "广州市"
        });
        dlcs.Add(new DcControl.DataList.optgroupChild()
        {
        ItemValue = "2",
        ItemText = "深圳市"
        });
        lists.Add(new DcControl.DataList()
        {
        optgroupText = "广东省",
        child = dlcs
        });

        DcDropDownList1.SetData(lists, new ListItem("请选择", "0"), 0);
}

安装:

• NuGet: https://www.nuget.org/packages/DcControls/
• CSDN: https://code.csdn.net/winsty2008/dchelper/tree/master/DcControl/DcDropDownList.cs