leAreaRegion"><span class="collapsibleRegionTitle" onclick="SectionExpandCollapse('ID5RB')" onkeypress="SectionExpandCollapse_CheckKey('ID5RB', event)" tabindex="0"><img id="ID5RBToggle" class="collapseToggle" src="../icons/SectionExpanded.png" />备注</span></div><div id="ID5RBSection" class="collapsibleSection">
            Property should have the tree ancestor of the <span class="code">ItemsControl</span> type or
            marked with the <a href="T_Senparc_Weixin_Annotations_XamlItemsControlAttribut