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VB6+ADO+ListView数据库分页显示

2004-02-13 eNet&Ciweek

  Private Sub Form_Unload(Cancel As Integer)

  If rs.State = 1 Then rs.Close

  If link1.State = 1 Then link1.Close

  Set rs = Nothing: Set link1 = Nothing

  End Sub  

  Private Sub list1_MouseUp(Button As Integer, Shift As Integer, x As Single, y As Single) '切换表

  On Error Resume Next

  If list1.ListItems.Count = 0 Then Exit Sub

  If rs.State = 1 Then rs.Close

  list2.ListItems.Clear: list2.ColumnHeaders.Clear: c.Clear

  rs.Open "select * from " & list1.SelectedItem.Text, link1, adOpenStatic, adLockReadOnly

  If Err.Number <> 0 Then

  MsgBox "该数据表不能支持的游标模式", vbCritical, "不规则的格式": Exit Sub

  End If

  rs.PageSize = Text1.Text

  rslen = rs.RecordCount

  If rs.PageCount < page Then page = 1

  Label3.Caption = "共" & rslen & "条记录,共" & rs.PageCount & "页,当前页码 " & page

  If rs.PageCount > page Then down.Enabled = True Else down.Enabled = False

  If page <> 1 Then up.Enabled = True Else up.Enabled = False

  Set ziduan = rs.Fields '定义字段记录集

  For i = 0 To ziduan.Count - 1

  list2.ColumnHeaders.Add , , ziduan(i).Name '根据字段指定视图列

  c.AddItem ziduan(i).Name

  rs.MoveFirst '记录到尾后填充下一列

  rs.AbsolutePage = page '定义记录集的绝对页码

  For r = 0 To rs.PageSize - 1

  If rs.EOF Then Exit For

  rstext = rs(i)

  If i = 0 Then '首次直接填充第一列

  list2.ListItems.Add , , rstext

  Else '非首次填充下一下

  If rstext <> Empty Then list2.ListItems(r + 1).ListSubItems.Add , , rstext Else list2.ListItems(r + 1).ListSubItems.Add , , ""

  End If

  rs.MoveNext

  Next

  Next

  If c.ListCount <> 0 Then c.ListIndex = 0: findstr.Enabled = True Else findstr.Enabled = False

  Set ziduan = Nothing

  End Sub  

  Private Sub menu01_Click(Index As Integer)

  Select Case Index

  Case 1: '建新表演示

  str1 = 1

  For i = 1 To list1.ListItems.Count

  If InStr(list1.ListItems(i).Text, "新建表") = 1 Then str1 = str1 + 1

  Next

  link1.Execute "create table 新建表" & str1 & "(会员名 Text,密码 Varchar(8),年龄 int not null,经验值 " & _

  "integer,加入日期 DateTime null)"

  link1.Execute "insert into 新建表" & str1 & "(会员名,密码,年龄,经验值,加入日期) values ('风云舞','12345678'" & _

  ",18,365,'" & Now & "')"

  link1.Execute "insert into 新建表" & str1 & "(会员名,密码,年龄,经验值,加入日期) values ('Lshdic','87654321'" & _

  ",18,365,'" & Now & "')"

  opendatabase pubdatapath '刷新重装载列表

  Case 2: '刷新——重装载

  opendatabase pubdatapath

  Case 3: '删除

  If rs.State = 1 Then rs.Close

  link1.Execute "Drop table " & list1.SelectedItem.Text

  opendatabase pubdatapath

  Case 4: '表属性

  If rs.State = 1 Then rs.Close

  rs.Open "select * from " & list1.SelectedItem.Text, link1, adOpenStatic, adLockReadOnly

  For i = 0 To rs.Fields.Count - 1

  str1 = str1 & rs.Fields(i).Name & ","

  str2 = str2 & rs.Fields(i).Type & ","

  str3 = str3 & rs.Fields(i).ActualSize & ","

  str4 = str4 & rs.Fields(i).DefinedSize & ","

  Next

  MsgBox "包含字段:" & str1 & vbCrLf & vbCrLf & "字段类型:" & str2 & vbCrLf & vbCrLf & "第一行数据大小:" & _

  str3 & vbCrLf & vbCrLf & "每行数据预设容量:" & str4, vbExclamation, "表属性"

  End Select

  End Sub  

  Private Sub Text2_GotFocus()

  If Text2.Text = "查找关键字..." Then Text2.Text = ""

  End Sub  

  Private Sub Text2_LostFocus()

  If Text2.Text = "" Then Text2.Text = "查找关键字..."

  End Sub  

  Private Sub up_Click() '功能,上一页

  page = page - 1: list1_MouseUp 1, 0, 10, 10

  End Sub(完)

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