om/dotnet/api/system.boolean" target="_blank">System<span id="LST8592836B_7"></span><script type="text/javascript">AddLanguageSpecificTextSet("LST8592836B_7?cs=.|vb=.|cpp=::|nu=.|fs=.");</script>Boolean</a><br />请保留默认值true，不用输入。</dd></dl><h4 class="subHeading">类型参数</h4><dl><dt><span class="parameter">T</span></dt><dd /></dl><h4 class="subHeading">返回值</h4>类型：<span class="selflink"><span class="typeparameter">T</span></span><br /></div><div class="collapsibleAreaReg