在引用列表框项目时需要帮助 [英] need help in refershing a listbox items
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问题描述
大家好
我写了以下内容并在listview中加载数据
尝试
ParentEntry.Path = WinNT:
对于 每个 childEntry 在 ParentEntry.Children
选择 案例 childEntry。 SchemaClassName
Case Domain
SubParentEntry.Path = WinNT://& childEntry.Name
对于 每个 SubChildEntry 在 SubParentEntry.Children
选择 案例 SubChildEntry.SchemaClassName
案例 计算机
LBox.Items.Add(SubChildEntry.Name)
结束 选择
< span class =code-keyword>下一步
结束 选择
下一步
Catch Excep 作为例外
MsgBox( 读取目录时出错)
最后
ParentEntry = 没什么
结束 尝试
现在我想在此之后对此进行评论一定的时间间隔..请给我打电话怎么办..
谢谢
解决方案
谢谢这个链接
http:// www .vbdotnetforums.com / windows-forms / 39160-listbox-items-do-not-refresh.html [ ^ ]
私有 Sub Form1_Load( ByVal sender As System。 Object , ByVal e As System.EventArgs)句柄 MyBase .Load
ListBox1.Items.Add( 第一项)
ListBox1.Items.Add( 第二项)
ListBox1.Items.Add( 第三项)
ListBox1.Items.Add( 第四项)
ListBox1.SelectedIndex = 0
Timer1.Interval = 500
Timer1.Start()
结束 Sub
私有 Sub Timer1_Tick( ByVal 发件人作为系统。对象, ByVal e As System.EventArgs)句柄 Timer1.Tick
Dim i 作为 整数
i = ListBox1.SelectedIndex
i = i + 1
如果 i> ListBox1.Items.Count - 1 然后 i = 0
ListBox1.SelectedIndex = i
结束 Sub
Hi all
I wrote the below to and loading the data in listview
Try
ParentEntry.Path = "WinNT:"
For Each childEntry In ParentEntry.Children
Select Case childEntry.SchemaClassName
Case "Domain"
SubParentEntry.Path = "WinNT://" & childEntry.Name
For Each SubChildEntry In SubParentEntry.Children
Select Case SubChildEntry.SchemaClassName
Case "Computer"
LBox.Items.Add(SubChildEntry.Name)
End Select
Next
End Select
Next
Catch Excep As Exception
MsgBox("Error While Reading Directories")
Finally
ParentEntry = Nothing
End Try
now i want to referesh this after a certain interval of time..please tel me how to do..
Thank you
解决方案
chek this link
http://www.vbdotnetforums.com/windows-forms/39160-listbox-items-do-not-refresh.html[^]
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load ListBox1.Items.Add("First Item") ListBox1.Items.Add("Second Item") ListBox1.Items.Add("Third Item") ListBox1.Items.Add("Fourth Item") ListBox1.SelectedIndex = 0 Timer1.Interval = 500 Timer1.Start() End Sub Private Sub Timer1_Tick(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Timer1.Tick Dim i As Integer i = ListBox1.SelectedIndex i = i + 1 If i > ListBox1.Items.Count - 1 Then i = 0 ListBox1.SelectedIndex = i End Sub
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