窗体上有list1、list2两个列表框,list1中有若干列表项(见图),并有下面的程序:
private sub comand1_click()
for k=list1.listcount-1 to 0 step -1
if list1.selected(k) then
list2.additem list1.list(k)
list1.removeitem k
end if
next k
end sub
程序运行时,按照图示在list1中选中2个列表项,然后单击commandl命令按钮,则产生的结果是
发布于 2022-05-11 10:18:14
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窗体上有List1、List2两个列表框,List1中有若干列表项(见图),并有下面的程序:Private Sub Command1_Click( )For k=List1.ListCout-1 To 0 Step-1If List1.Selected(k)ThenList2.Addltem List1.List(k)List1.Removeltem kEnd IfNext kEnd Sub 程序运行时,按照图示在List1中选中2个列表项,然后单击Command1命令按钮,则产生的结果是( )。
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设窗体上有一个名为List1的列表框,并编写下面的事件过程:Private Sub List1_Click( )Dim ch As Stringch=List1.List(List1.Listlndex)List1.RemoveItem List1.ListlndexList1.Addltem chEnd Sub程序运行时,单击一个列表项,则产生的结果是( )。
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Private Sub Command1_Click() Dim k%' For k = List1.ListCount - 1 To 0 ? If List1.Selected(k) = True Then' List2.AddItem ?' List1.RemoveItem ? End If Next kEnd SubPrivate Sub Command2_Click() Dim k% Text1 = "已经选中的城市有:" For k = 0 To List2.ListCount - 1 Step 1' Text1 = ? & " " & List2.List(k) Next kEnd Sub
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在窗体上画一个列表框和一个命令按钮,其名称分别为List1和Command1,然后编写如下事件过程:Private Sub Form_Load()List1.AddItem "Item 1"List1.AddItem "Item 2"List1.AddItem "Item 3"End SubPrivate Sub Command1_Click()List1.List(List1.ListCount) = "AAAA"End Sub程序运行后,单击命令按钮,其结果为
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窗体上有1个名称为List1的列表框,其中已经输入了若干个项目,如图所示;还有2个文本框,名称分别为Text1、Text2,1个名称为Command1的命令按钮,并有下列事件过程。 Private Sub Co mmand1_Click()Di mstr As Stri ng ,s As Stri ng ,k As Integers =Text1str =""For k =List1.ListCount -1To 0Step -1If InStr(List1.List(k),s)>0Thenstr =str &List1.List(k)&""End IfNext kIf str =""ThenText2="没有匹配的项目" Else Text2=strEnd IfEnd Sub程序运行时,在Text1中输入"京",单击命令按钮,则在Text2中显示的内容是( )。
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Private Sub Command1_Click() Call MoveAllEnd SubPublic Sub MoveItem(L1 As ListBox, L2 As ListBox)' L2.AddItem ?' L2.AddItem L1.Text L2.AddItem L1.List(L1.ListIndex)' L1.RemoveItem ? L1.RemoveItem L1.ListIndexEnd SubPublic Sub MoveAll()' For i = 0 To ? For i = 0 To List1.ListCount - 1 List2.AddItem List1.List(i) NextEnd SubPrivate Sub List1_DblClick()' Call MoveItem(?) Call MoveItem(List1, List2)End Sub
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Private Sub Command1_Click() n = Val(Text1.Text)' ? For k = 1 To n List1.AddItem Int(Rnd * 100) Next kEnd SubPrivate Sub Command2_Click()' For k = List1.ListCount - 1 To ? Step -1 If Val(List1.List(k)) Mod 2 = 1 Then' s = s + Val( ? )' List1.RemoveItem ? List1.RemoveItem k End If Next k' ? = sEnd Sub
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在窗体上画一个列表框和一个命令按钮,其名称分别为List1和Co mmand1,然后编写如下事件过程:Private Sub Form_Load()List1.AddIte m"Ite m1"List1.AddIte m"Ite m2"List1.AddIte m"Ite m3"End SubPrivate Sub Co mmand1_Click()List1.List(List1.ListCount)="AAAA"End Sub程序运行后,单击命令按钮,其结果为( )。
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