1.在Web.config的configuration节点下添加:
<configSections>
<section name="MicrosoftWebControls" type="System.Configuration.NameValueSectionHandler, System,System.Configuration.NameValueSectionHandler,System,Version=1.0.3300.0,Culture=neutral,PublicKeyToken=b77a5c561934e089" />
</configSections>
<MicrosoftWebControls>
<add key="CommonFiles" value="/虚拟目录/webctrl_client/1_0" />
</MicrosoftWebControls>
2.修改iewc:treeview
<iewc:treeview id="TreeView1" BorderWidth="0px" SelectExpands="True" SystemImagesPath="/虚拟目录/webctrl_client/1_0/treeimages" ShowLines="False" Height="100%" Width="100%" runat="server"></iewc:treeview>