行 800:            {
行 801:                GroupEntity group = groupRepository.Get(groupId);
行 802:                if (group.UserId == userId)
行 803:                    return GroupMemberRole.Owner;
行 804:                return GroupMemberRole.None;

[NullReferenceException: 未将对象引用设置到对象的实例。]
   Spacebuilder.Group.GroupService.GetGroupMemberRole(Int64 groupId, Int64 userId) in E:\WorkSpace\jinhu\Web\Applications\Group\Services\GroupService.cs:802
   Spacebuilder.Group.GroupService.IsManager(Int64 groupId, Int64 userId) in E:\WorkSpace\jinhu\Web\Applications\Group\Services\GroupService.cs:755
   Spacebuilder.Group.GroupTenantAuthorizationHandler.IsTenantManager(IUser currentUser, Int64 tenantOwnerId) in E:\WorkSpace\jinhu\Web\Applications\Group\Configuration\GroupTenantAuthorizationHandler.cs:37
   Tunynet.Common.AuthorizationService.IsTenantManager(IUser currentUser, String tenantTypeId, Int64 tenantOwnerId) in E:\WorkSpace\jinhu\BusinessComponents\Regulate\Permission\AuthorizationService.cs:114
   Spacebuilder.Common.Authorizer.Tag_Edit(Tag tag) in E:\WorkSpace\jinhu\Common\Authorizer.cs:369
   ASP._Page_Applications_Group_Views_ChannelGroup_ListByTag_cshtml.Execute() in e:\WorkSpace\jinhu\Web\Applications\Group\Views\ChannelGroup\ListByTag.cshtml:30
   System.Web.WebPages.WebPageBase.ExecutePageHierarchy() +199
   System.Web.Mvc.WebViewPage.ExecutePageHierarchy() +125
   Tunynet.UI.ThemedWebViewPage.ExecutePageHierarchy() in E:\WorkSpace\jinhu\BusinessComponents\UI\Themes\ThemedWebViewPage.cs:50
   System.Web.WebPages.WebPageBase.ExecutePageHierarchy(WebPageContext pageContext, TextWriter writer, WebPageRenderingBase startPage) +90
   Tunynet.UI.ThemedRazorView.RenderView(ViewContext viewContext, TextWriter writer, Object instance) in E:\WorkSpace\jinhu\BusinessComponents\UI\Themes\ThemedRazorView.cs:130
   System.Web.Mvc.BuildManagerCompiledView.Render(ViewContext viewContext, TextWriter writer) +107
   System.Web.Mvc.ViewResultBase.ExecuteResult(ControllerContext context) +291
   System.Web.Mvc.ControllerActionInvoker.InvokeActionResult(ControllerContext controllerContext, ActionResult actionResult) +13
   System.Web.Mvc.<>c__DisplayClass1a.<InvokeActionResultWithFilters>b__17() +23
   System.Web.Mvc.ControllerActionInvoker.InvokeActionResultFilter(IResultFilter filter, ResultExecutingContext preContext, Func`1 continuation) +245
   System.Web.Mvc.<>c__DisplayClass1c.<InvokeActionResultWithFilters>b__19() +22
   System.Web.Mvc.ControllerActionInvoker.InvokeActionResultFilter(IResultFilter filter, ResultExecutingContext preContext, Func`1 continuation) +245
   System.Web.Mvc.<>c__DisplayClass1c.<InvokeActionResultWithFilters>b__19() +22
   System.Web.Mvc.ControllerActionInvoker.InvokeActionResultFilter(IResultFilter filter, ResultExecutingContext preContext, Func`1 continuation) +245
   System.Web.Mvc.<>c__DisplayClass1c.<InvokeActionResultWithFilters>b__19() +22
   System.Web.Mvc.ControllerActionInvoker.InvokeActionResultFilter(IResultFilter filter, ResultExecutingContext preContext, Func`1 continuation) +245
   System.Web.Mvc.<>c__DisplayClass1c.<InvokeActionResultWithFilters>b__19() +22
   System.Web.Mvc.ControllerActionInvoker.InvokeActionResultFilter(IResultFilter filter, ResultExecutingContext preContext, Func`1 continuation) +245
   System.Web.Mvc.<>c__DisplayClass1c.<InvokeActionResultWithFilters>b__19() +22
   System.Web.Mvc.ControllerActionInvoker.InvokeActionResultWithFilters(ControllerContext controllerContext, IList`1 filters, ActionResult actionResult) +176
   System.Web.Mvc.Async.<>c__DisplayClass2a.<BeginInvokeAction>b__20() +88
   System.Web.Mvc.Async.<>c__DisplayClass25.<BeginInvokeAction>b__22(IAsyncResult asyncResult) +102
   System.Web.Mvc.Async.WrappedAsyncResult`1.End() +50
   System.Web.Mvc.Async.AsyncControllerActionInvoker.EndInvokeAction(IAsyncResult asyncResult) +42
   System.Web.Mvc.<>c__DisplayClass1d.<BeginExecuteCore>b__18(IAsyncResult asyncResult) +14
   System.Web.Mvc.Async.<>c__DisplayClass4.<MakeVoidDelegate>b__3(IAsyncResult ar) +23
   System.Web.Mvc.Async.WrappedAsyncResult`1.End() +55
   System.Web.Mvc.Controller.EndExecuteCore(IAsyncResult asyncResult) +54
   System.Web.Mvc.Async.<>c__DisplayClass4.<MakeVoidDelegate>b__3(IAsyncResult ar) +23
   System.Web.Mvc.Async.WrappedAsyncResult`1.End() +55
   System.Web.Mvc.Controller.EndExecute(IAsyncResult asyncResult) +44
   System.Web.Mvc.Controller.System.Web.Mvc.Async.IAsyncController.EndExecute(IAsyncResult asyncResult) +10
   System.Web.Mvc.<>c__DisplayClass8.<BeginProcessRequest>b__3(IAsyncResult asyncResult) +25
   System.Web.Mvc.Async.<>c__DisplayClass4.<MakeVoidDelegate>b__3(IAsyncResult ar) +23
   System.Web.Mvc.Async.WrappedAsyncResult`1.End() +55
   System.Web.Mvc.MvcHandler.EndProcessRequest(IAsyncResult asyncResult) +46
   System.Web.Mvc.MvcHandler.System.Web.IHttpAsyncHandler.EndProcessRequest(IAsyncResult result) +9
   System.Web.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +9628700
   System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +155