问答题

YouarecreatingaWindowsFormsapplicationbyusingthe.NETFramework3.5.TheapplicationdisplaysemployeenamesbyusingtheTreeViewcontrol.YouneedtoimplementthedraganddropfunctionalityintheTreeViewcontrol.Whichtwoactionsshouldyouperform？（）
A.SettheAllowDragpropertytotrue.CreateaneventhandlerfortheDragOverevent.
B.SettheAllowDragpropertytotrue.CreateaneventhandlerfortheItemDrageventtocalltheDoDragDropmethod.
C.SettheAllowDragpropertytotrue.CreateaneventhandlerfortheDragEntereventtocalltheDoDragDropmethod.
D.CreateaneventhandlerfortheDragDropeventtohandlethemoveorcopybyitself.
E.CreateaneventhandlerfortheDragEntereventtohandlethemoveorcopybyitself.

A.NETFramework3.5.TheapplicationdisplaysemployeenamesbyusingtheTreeViewcontrol.YouneedtoimplementthedraganddropfunctionalityintheTreeViewcontrol.Whichtwoactionsshouldyouperform？（）
A.SettheAllowDragpropertytotrue.CreateaneventhandlerfortheDragOverevent.
B.SettheAllowDragpropertytotrue.CreateaneventhandlerfortheItemDrageventtocalltheDoDragDropmethod.
C.SettheAllowDragpropertytotrue.CreateaneventhandlerfortheDragEntereventtocalltheDoDragDropmethod.
D.CreateaneventhandlerfortheDragDropeventtohandlethemoveorcopybyitself.
E.CreateaneventhandlerfortheDragEntereventtohandlethemoveorcopybyitself.

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问答题

YoudiscoverthataparticulargroupofsettingsnamedUserPreferenceschanges.YouneedtostoretheUserPreferencesettingstopreventaffectingotherapplications.Whichtwoactionsshouldyouperform？（）

A.UsetheProperties.USerPreferencesobject
B.UsetheProperties.Settings.Default.Userprefencesobject
C.UsetheConfigurationManager.AppSettingsobjectduringruntime
D.CreatethesettingsbyusingApplicationscope
E.CreatethesettingsbyusingUserscope

单项选择题

1.classTest{2.privateDemod；3.voidstart（）{4.d=newDemo（）；5.this.takeDemo（d）；6.}7.8.voidtakeDemo（Demodemo）{9.demo=null；10.demo=newDemo（）；11.}12.}WhenistheDemoobject，createdonline3，eligibleforgarbagecollection？（）
A.Afterline5.
B.Afterline9.
C.Afterthestart（）methodcompletes.
D.WhenthetakeDemo（）methodcompletes.
E.Whentheinstancerunningthiscodeismadeeligibleforgarbagecollection.

A.classTest{2.privateDemod；3.voidstart（）{4.d=newDemo（）；5.this.takeDemo（d）；6.}7.8.voidtakeDemo（Demodemo）{9.demo=null；10.demo=newDemo（）；11.}12.}WhenistheDemoobject，createdonline3，eligibleforgarbagecollection？（）
A.Afterline5.
B.Afterline9.
C.Afterthestart（）methodcompletes.
D.WhenthetakeDemo（）methodcompletes.
E.Whentheinstancerunningthiscodeismadeeligibleforgarbagecollection.