【发布时间】：2012-02-09 20:07:37
【问题描述】：
我正在尝试实现搜索列表框数据，以便在键入时使用文本框字段填充。
我在网上阅读了一些文档和有用的材料，发现以下链接对实现我的要求很有用，因此我使用了几乎相同的代码，但最终遇到了问题。
http://www.opengatesw.net/ms-access-tutorials/Access-Articles/Search-As-You-Type-Access.html
我的表单中有一个“Primary_skill”列表框字段，其中包含 100 多个项目，我正在尝试实现数据以根据我在表单中输入 txt 框字段的搜索自动显示。
我在这里运行的问题，我无法在此处选择两个不同的搜索项。 （表单代码中的 Me.refresh 行出现了一些错误
详细示例：我想选择用户 primary_skills 既是“DB2”又是“SQL server”，因为我最初能够搜索并选择了 db2 的复选框，后来我更改了搜索 txt 我收到错误指向调试.refresh "on change" 事件中的行。
**Form search as-you-type List box code**
Private Sub btnClearFilter_Click()
'CODE FOR THE RED "X" BUTTON TO CLEAR THE FILTER AND SHOW ALL
On Error Resume Next
10 Me.txtsearch.Value = ""
20 txtSearch_Change
End Sub
Private Sub txtSearch_Change()
'CODE THAT HANDLES WHAT HAPPENS WHEN THE USER TYPES IN THE SEARCH BOX
Dim strFullList As String
Dim strFilteredList As String
10 If blnSpace = False Then
20 Me.Refresh 'refresh to make sure the text box changes are actually available to use
'specify the default/full rowsource for the control
30 strFullList = "SELECT TEMP.Primary_Skill FROM TEMP;"
'specify the way you want the rowsource to be filtered based on the user's entry
40 strFilteredList = "SELECT TEMP.Primary_Skill FROM TEMP WHERE [Primary_Skill] LIKE ""*" & Me.txtsearch.Value & _
"*"""
'run the search
50 fLiveSearch Me.txtsearch, Me.Primary_Skill, strFullList, strFilteredList, Me.txtCount
60 End If
End Sub
Private Sub txtSearch_KeyPress(KeyAscii As Integer)
'NECESSARY TO IDENTIFY IF THE USER IS HITTING THE SPACEBAR
'IN WHICH CASE WE WANT TO IGNORE THE INPUT
10 On Error GoTo err_handle
20 If KeyAscii = 32 Then
30 blnSpace = True
40 Else
50 blnSpace = False
60 End If
70 Exit Sub
err_handle:
80 Select Case Err.Number
Case Else
90 MsgBox "An unexpected error has occurred: " & vbCrLf & Err.Description & _
vbCrLf & "Error " & Err.Number & "(" & Erl & ")"
100 End Select
End Sub
Private Sub txtSearch_GotFocus()
' USED TO REMOVE THE PROMPT IF THE CONTROL GETS FOCUS
10 On Error Resume Next
20 If Me.txtsearch.Value = "(type to search)" Then
30 Me.txtsearch.Value = ""
40 End If
End Sub
Private Sub txtSearch_LostFocus()
' USED TO ADD THE PROMPT BACK IN IF THE CONTROL LOSES FOCUS
10 On Error Resume Next
20 If Me.txtsearch.Value = "" Then
30 Me.txtsearch.Value = "(type to search)"
40 End If
End Sub
**Modsearach (Module Code):**
Option Compare Database
Option Explicit
'************* Code Start **************
' This code was originally written by OpenGate Software
' It is not to be altered or distributed,
' except as part of an application.
' You are free to use it in any application,
' provided the copyright notice is left unchanged.
' OpenGate Software http://www.opengatesw.net
Function fLiveSearch(ctlSearchBox As TextBox, ctlFilter As Control, _
strFullSQL As String, strFilteredSQL As String, Optional ctlCountLabel As Control)
'==================================================================================
' THIS FUNCTION ALLOWS YOU TO FILTER A COMBO BOX OR LIST BOX AS THE USER TYPES
' ALL YOU NEED TO DO IS PASS IN THE CONTROL REFERENCE TO THE SEARCH BOX ON YOUR
' FORM, THE LISTBOX/COMBO BOX YOU WANT TO FILTER, AND WHAT THE FULL AND FILTERED
' SQL (ROWSOURCE) SHOULD BE.
'
' ctlSearchBox THE TEXTBOX THE USER TYPES IN TO SEARCH
'
' ctlFilter THE LISTBOX OR COMBOBOX ON THE FORM YOU WANT TO FILTER
'
' strFullSQL THE FULL ROWSOURCE YOU WANT TO DISPLAY AS A DEFAULT IF NO
' RESULTS ARE RETURNED
'
' strFilteredSQL THE FILTERED ROWSOURCE FOR THE LISTBOX/COMBOBOX; FOR EXAMPLE
' YOU WOULD WANT TO USE '...like ""*" & me.txtsearch.value & "*"""
' TO FILTER THE RESULTS BASED ON THE USER'S SEARCH INPUT
'
' ctlCountLabel (OPTIONAL) THE LABEL ON YOUR FORM WHERE YOU WANT TO DISPLAY THE
' COUNT OF ROWS DISPLAYED IN THE LISTBOX/COMBOBOX AS THEY SEARCH
'=====================================================================================
'ADVANCED PARAMETERS - Change these constants to change the behaviour of the search
Const iSensitivity = 1 'Set to the number of characters the user must enter before the search starts
Const blnEmptyOnNoMatch = True 'Set to true if you want nothing to appear if nothing matches their search
10 On Error GoTo err_handle
'restore the cursor to where they left off
20 ctlSearchBox.SetFocus
30 ctlSearchBox.SelStart = Len(ctlSearchBox.Value) + 1
40 If ctlSearchBox.Value <> "" Then
'Only fire if they've input more than two characters (otherwise it's wasteful)
50 If Len(ctlSearchBox.Value) > iSensitivity Then
60 ctlFilter.RowSource = strFilteredSQL
70 If ctlFilter.ListCount > 0 Then
80 ctlSearchBox.SetFocus
90 ctlSearchBox.SelStart = Len(ctlSearchBox.Value) + 1
100 Else
110 If blnEmptyOnNoMatch = True Then
120 ctlFilter.RowSource = ""
130 Else
140 ctlFilter.RowSource = strFullSQL
150 End If
160 End If
170 Else
180 ctlFilter.RowSource = strFullSQL
190 End If
200 Else
210 ctlFilter.RowSource = strFullSQL
220 End If
'if there is a count label, then update it
'if there is a count label, then update it
'230 If IsMissing(ctlCountLabel) = False Then
'240 ctlCountLabel.Caption = "Displaying " & Format(ctlFilter.ListCount - 1, "#,##0") & " records"
'250 End If
260 Exit Function
err_handle:
270 Select Case Err.Number
Case 91 'no ctlCountLabel
'exit
280 Case 94 'null string
'exit
290 Case Else
300 MsgBox "An unexpected error has occurred: " & vbCrLf & Err.Description & _
vbCrLf & "Error " & Err.Number & vbCrLf & "Line: " & Erl
310 End Select
End Function
' ***** Code End ******
知道我在这里缺少什么。谢谢！
【问题讨论】：
-
那么你得到的错误是什么？
-
错误是 - 运行时错误“3058”：索引或主键不能包含 NULL 值。
-
我尝试创建一个简单的表单并观察到这种行为 - 我能够选择第一个值，但是当尝试在文本框中输入一个单词时，第二次表单试图保存调试指向的记录20 Me.Refresh '刷新以确保文本框更改实际上可以使用 有人对此问题有任何想法吗.. 谢谢你的回复克里斯 仅供参考。我的主要技能字段可以“允许多个值”
标签： ms-access ms-access-2007 vba