on.htm" title="TaskExtension 方法" tocid="Methods_T_System_Threading_Tasks_TaskExtension">TaskExtension 方法</a></div><div class="toclevel2 current" data-toclevel="2"><a data-tochassubtree="false" href="../html/M_System_Threading_Tasks_TaskExtension_CompletedTask.htm" title="CompletedTask 方法 " tocid="M_System_Threading_Tasks_TaskExtension_CompletedTask">CompletedTask 方法 </a></div></div><div id="tocResizableEW" onmousedown="OnMouseDown(event);"></div><div id="TocResize" class="tocResize"><img id=