Can realize a good multi-selected dropdownlist. I have used in many places, I feel good

Packet : 77433643dropdownchecklist.rar filelist
2\新建文件夹\DropDownCheckList.dll
2\新建文件夹\DropDownCheckList.js
2\新建文件夹\Sys_Permission.aspx
2\新建文件夹\Sys_Permission.aspx.cs
2\新建文件夹
2

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