��：<a href="https://docs.microsoft.com/dotnet/api/system.io.stream" target="_blank">System.IO<span id="LSTC17D6D12_3"></span><script type="text/javascript">AddLanguageSpecificTextSet("LSTC17D6D12_3?cs=.|vb=.|cpp=::|nu=.|fs=.");</script>Stream</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" target="_blank">Task</a><br /></div><div class="collapsibleAreaRegion" id="seeAlsoSection"><span class="collapsibleRegionTitle