");</script>Stream</a><br />文件流</dd><dt><span class="parameter">timeOut</span> (Optional)</dt><dd>类型：<a href="https://docs.microsoft.com/dotnet/api/system.int32" target="_blank">System<span id="LSTDA357209_6"></span><script type="text/javascript">AddLanguageSpecificTextSet("LSTDA357209_6?cs=.|vb=.|cpp=::|nu=.|fs=.");</script>Int32</a><br /></dd></dl><h4 class="subHeading">返回值</h4>类型：<a href="https://docs.microsoft.com/dotnet/api/system.threading.tasks.task-1" target="_blank">Task</a>