Excel 记录计数为1时,由ADODB记录集填充的动态列表框不显示项
嗨,我的列表框有问题 我想查一下餐厅每张桌子上坐着多少人,还有多少人等着坐下。为此,我使用SheetLeunchRoom作为数据库,并使用ADODB记录集获取每个表的结果 我不明白为什么列表框只有一条记录没有被填充Excel 记录计数为1时,由ADODB记录集填充的动态列表框不显示项,excel,vba,listbox,adodb,Excel,Vba,Listbox,Adodb,嗨,我的列表框有问题 我想查一下餐厅每张桌子上坐着多少人,还有多少人等着坐下。为此,我使用SheetLeunchRoom作为数据库,并使用ADODB记录集获取每个表的结果 我不明白为什么列表框只有一条记录没有被填充 Sub UserForm_Initialize() Dim ctrl As Control Dim cn As New ADODB.Connection Dim rs As New ADODB.Recordset Dim i As Integer,
Sub UserForm_Initialize()
Dim ctrl As Control
Dim cn As New ADODB.Connection
Dim rs As New ADODB.Recordset
Dim i As Integer, L As Integer, T As Integer, W As Integer, H As Integer
Dim strsql As String
Dim ArrTables, arr, arrPax, lbx As ListBox
Const adOpenStatic = 3
Const adLockOptimistic = 3
Const adCmdText = &H1
Set cn = CreateObject("ADODB.Connection")
Set rs = CreateObject("ADODB.Recordset")
Set rs = New ADODB.Recordset
Set LBs = New Collection
cn.Open "Provider=Microsoft.Jet.OLEDB.4.0; Data Source=" & ThisWorkbook.FullName & "; Extended Properties=""Excel 8.0;HDR=Yes;"";"
strsql = "Select IdClients, Paxname, PaxSurname from [LunchRoom$] where Table is null"
rs.Open strsql, cn, adOpenStatic, adLockReadOnly, adCmdUnspecified
If rs.EOF Then lbPaxNoTable.Caption = "Noboby can be seat": GoTo PaxOnTable
rs.MoveFirst
arr = rs.GetRows
With Me.LbxPaxNotSeating
.Clear
.ColumnCount = 3
.ColumnWidths = "0;30;30"
.List = Application.Transpose(arr)
.ListIndex = 0
End With
lbPaxNoTable.Caption = rs.RecordCount & " people wait to sit down"
PaxOnTable:
Set rs = Nothing
strsql = "Select distinct Table FROM [Tables$]"
rs.Open strsql, cn, adOpenStatic, adLockReadOnly, adCmdUnspecified
ReDim ArrTables(0 To rs.RecordCount)
i = 0
Do Until rs.EOF
ArrTables(i) = rs![Table]
rs.MoveNext
i = i + 1
Loop
Set rs = Nothing
L = 24
T = 150
W = 165
H = 94
For i = 0 To UBound(ArrTables) - 1
If i = 3 Then T = 252: L = 24
strsql = "Select IdClients, Paxname, PaxSurname from [LunchRoom$] where Table = '" & ArrTables(i) & "'"
rs.Open strsql, cn, adOpenStatic, adLockReadOnly, adCmdUnspecified
If rs.EOF Then arrPax = Null Else arrPax = rs.GetRows
Call Add_Dynamic_lbx(ArrTables(i), "Forms.ListBox.1", arrPax, L, T, H, W)
Me.Controls("lb" & ArrTables(i)).Caption = rs.RecordCount & " people are seated on " & ArrTables(i)
L = L + 3 + W
Set rs = Nothing
Next i
Dim lb As MSForms.ListBox
Dim LMB As ListBoxDragAndDropManager
Set LBs = New Collection
For Each ctrl In Me.Controls
If TypeName(ctrl) = "ListBox" Then
Set LMB = New ListBoxDragAndDropManager
Set LMB.ThisListBox = ctrl
LBs.Add LMB
End If
Next
fastexit:
Set rs = Nothing
Set cn = Nothing
End Sub
Sub Add_Dynamic_lbx(ByVal nome As String, ctr As String, val, L As Integer, T As Integer, H As Integer, W As Integer)
Dim lbl As Control, code As String, NextLine As Long
Set lbl = FrmPlan.Controls.Add(ctr)
With lbl
.name = nome
.Clear
.ColumnCount = 3
If Not IsNull(val) Then
.List = Application.Transpose(val):
.ListIndex = -1
End If
.Width = W
.ColumnWidths = "0;30;150" '1th=0 to hide the IdRst
.Height = H
.Left = L
.Top = T
.ControlTipText = nome
End With
End Sub
当您转置从GetRows返回的二维数组时,如果rows维度只有一个插槽,那么您将得到一个一维数组,而不是预期的翻转二维数组
如果查看“监视”窗口,可以看到这一点:我运行了一个只返回一行的查询,使用GetRows填充arr,然后使用Transpose填充arr2-
请注意,arr2是一个一维数组。将其与下面相同的代码和两个记录结果集进行比较:
不要使用Application.Transpose,请尝试使用如下VBA函数:
添加一些断点,然后查看代码的哪些部分没有执行。@所有代码都已执行,但没有出现错误。每个列表框下方的标签包含正确的rst编号,但如果只有一个rst,则列表框为空。您有rs。打开strsql、cn、adOpenStatic、adLockReadOnly、ADCMDMUNTE明,但在上面大约8行,您设置了rs=Nothing,因此会引发错误?我打开并关闭每个表的rs。我没有错。问题是:arrPax=rs.GetRows.List=Application.Transposeval如果rs.GetRows仅为1行,则Correspondent列表框不显示唯一记录!!谢谢,我更改了我的代码:如果rs.RecordCount>1,那么arrPax=Application.transpers.GetRows,否则arrPax=transpersearrayrs.GetRows,对于popolate,只需将列表框.list=arrPax。您可以通过始终使用VBA函数而忽略Application.Transpose,从而简化代码