最后delete行了，不就是隐藏了行和图片吗？

改成

    For i As Integer = ls.count-1 To 0 Step -1
        lvw.rows(ls(i)).Delete
    Next

button3

Dim lvw As WinForm.ListView = Forms("分类").Controls("ListView1")
lvw.StopRedraw() \'暂停绘制
lvw.Rows.Clear() \'清除原来的行
lvw.Images.Clear() \'清除原来的图片
lvw.View = ViewMode.Tile \'显示模式为平铺
lvw.Images.LargeSize = New Size(65,75) \'定义大图标尺寸
lvw.TitleSize = New Size(150,90)  \'设置平铺区域的大小
Dim cls() As String = {"cs1","cs2","cs3"} \'定义列名
For i As Integer = 0 To  cls.Length - 1  \'增加列
    Dim c As WinForm.ListViewColumn = lvw.Columns.Add()
    c.Name = cls(i) \'指定列名
Next
Dim count As Integer = 0 \'测试
For Each dr As DataRow In DataTables("商品").Select("") \'从数据表中提取数据
    count += 1
    If count > 10 Then Exit For \'测试
    Dim Key As String = ProjectPath & "images\\aaa\\" & dr("ppp")\'
    \' Dim Key As String = dr("ppp") \'获取此员工的照片文件
    lvw.Images.AddLargeImage(Key, Key) \'添加照片,直接用文件名作为图片键值
    Dim vr As  WinForm.ListViewRow =  lvw.Rows.Add() \'增加一行
    vr.ToolTipText = dr("cn_name")  \'设置此行的动态提示
    vr.ImageKey = Key \'设置图片键值
    For Each cl As String In cls \'逐列取值
        vr(cl) = dr(cl)
    Next
    vr.tag = dr
Next
lvw.ResumeRedraw() \'恢复绘制

-------------------------------------------------------------

button2

Dim lvw As WinForm.ListView = Forms("分类").Controls("ListView1")
Dim vls As String = ""
Dim ls As new List(of Integer)
For Each vr As WinForm.ListViewRow In lvw.SelectedRows
    vls = vls & "," & vr.tag("id")
    If vr.tag("lei")= "bbb" Then
        ls.add(vr.Index)
    End If
Next
vls = vls.Trim(",")
If vls > "" Then
    For i As Integer = ls.count-1 To 0 Step -1
        lvw.rows(ls(i)).Delete
    Next
Else
    MessageBox.show("你并没有选择图!" )
End If