This code doesn't work when I have two or more table in my form Recordsource
Question
-
I use this code for making forms for searching in my Access program.My backend database is SQL. When the record source of this forms is only one table , for example "Customers" it works properly and I search anythings very well, but when I made forms that has two or more tables as record source, it encounter a problem. It trigger error 2474 and error 2185 , it occurs when the code doesn't find the matching text that I entered in the text box in the underlying tables (field). I tried a lot but haven't find what is the problem!
I used this code in my Access program when its back end database was Access, for making search forms and it worked properly but when I migrated my database to SQL it trigger this error.
Option Compare Database Option Explicit 'Configuration options Private Const mbcStartOfField = False 'True to match only the start of the field; False for anywhere in field. Private Const mstrcWildcardChar = "%" 'Pattern matching wildcard. "*" for Access. "%" for SQL Server. Private Const mstrcSep = ";" 'Separator between list items. May need changing for some regional settings. 'Columns of cboFindAsUTypeField Private Const micControlName = 0 Private Const micControlLabel = 1 Private Const micControlType = 2 Private Const micFilterField = 3 Private Const micFieldType = 4 'Constant to indicate a control is sitting on the form (not on the page of a tab control.) Private Const mlngcOnTheForm = -1& 'Module name (for error handler.) Private Const conMod = "ajbFindAsUType" Public Function FindAsUTypeLoad(frm As Form, ParamArray avarExceptionList()) As Boolean On Error GoTo Err_Handler 'Purpose: Initialize the code for Find. 'Return: True on success. 'Arguments: - frm = a reference to the form where you want this filtering. ' - Optionally, you can specify controls NOT to offer filtering on, by putting the control names in quotes. 'Note: The form must contain the 2 controls, cboFindAsUTypeField and txtFindAsUTypeValue, ' with the combo set up correctly. 'Usage: Set the Load event procedure of the form to: ' Call FindAsUType(Me) ' To suppress filtering on controls FirstName and City, use: ' Call FindAsUType(Me, "FirstName", "City") Dim rs As DAO.Recordset 'Clone set of the form. Dim ctl As control 'Each control on the form. Dim strForm As String 'Name of form (for error handler.) Dim strControl As String 'Name of the control. Dim strField As String 'Name of the filter to use in the filter string. Dim strControlSource As String 'Name of the field the control is bound to. Dim strOut As String 'List for the RowSource of cboFindAsUTypeField. Dim lngI As Long 'Loop counter. Dim lngJ As Long 'Page counter loop controller. Dim bSkip As Boolean 'Flag to provide no filtering for this control. Dim bResult As Boolean 'Return value for this function. Dim lngParentNumber As Long '-1 if the control is directly on the form, else PageIndex of it parent. Dim lngMaxParentNumber As Long 'PageIndex of last page of tab control. -1 if no tab control. Dim astrControls() As String 'Array to handle the controls on the form. Const lngcControl = 0& 'First element of array astrControls is the control name. Const lngcField = 1& 'Second element of the array is the field name to filter on. 'The form must have a control source if we are to filter it, and needs our 3 controls. strForm = frm.Name If HasUnboundControls(frm, "cboFindAsUTypeField", "txtFindAsUTypeValue") And (frm.RecordSource <> vbNullString) Then 'Set the event handers for the 2 contorls frm!cboFindAsUTypeField.AfterUpdate = "=FindAsUTypeChange([Form])" frm.txtFindAsUTypeValue.OnChange = "=FindAsUTypeChange([Form])" 'Calculate the number of pages on the tab control if there is one. lngMaxParentNumber = MaxParentNumber(frm) 'Declare an array large enough to handle the controls on the form, ' for each page of any tab control (since these have their own tab index), ' and for storing the control name and the filter field name. ReDim astrControls(0& To frm.Controls.Count - 1&, mlngcOnTheForm To lngMaxParentNumber, lngcControl To lngcField) As String Set rs = frm.RecordsetClone 'For info about the fields the controls are bound to. 'Loop through the controls on the form. For Each ctl In frm.Controls 'Ignore hidden controls, and limit ourselves to text boxes and combos. If ctl.Visible Then If (ctl.ControlType = acTextBox) Or (ctl.ControlType = acComboBox) Then bSkip = False strField = vbNullString strControl = ctl.Name 'Ignore if the control name is in the exception list. For lngI = LBound(avarExceptionList) To UBound(avarExceptionList) If avarExceptionList(lngI) = strControl Then bSkip = True Exit For End If Next If Not bSkip Then 'Ignore if unbound, or bound to an expression. strControlSource = ctl.ControlSource If (strControlSource = vbNullString) Or (strControlSource Like "=*") Then bSkip = True Else 'Ignore yes/no fields, binary (JET uses for unknown), and complex data types (> 100.) Select Case rs(strControlSource).Type Case dbBoolean, dbLongBinary, dbBinary, dbGUID, Is > 100 bSkip = True End Select End If End If 'Ignore if we cannot specify the field to filter on. If Not bSkip Then strField = GetFilterField(ctl) If strField = vbNullString Then bSkip = True End If End If 'Add this control name to our array, in the order of the tab index. If Not bSkip Then lngParentNumber = ParentNumber(ctl) astrControls(ctl.TabIndex, lngParentNumber, lngcControl) = strControl astrControls(ctl.TabIndex, lngParentNumber, lngcField) = strField End If End If End If Next 'Loop through the array of controls, to build the string for the RowSource of cboFindAsUTypeField (5 columns.) For lngJ = LBound(astrControls, 2) To UBound(astrControls, 2) For lngI = LBound(astrControls) To UBound(astrControls) If astrControls(lngI, lngJ, lngcControl) <> vbNullString Then Set ctl = frm.Controls(astrControls(lngI, lngJ, lngcControl)) strOut = strOut & """" & ctl.Name & """" & mstrcSep & _ """" & Caption4Control(frm, ctl) & """" & mstrcSep & _ ctl.ControlType & mstrcSep & _ """" & astrControls(lngI, lngJ, lngcField) & """" & mstrcSep & _ """" & rs(ctl.ControlSource).Type & """" & mstrcSep End If Next Next rs.Close 'Remove the trailing separator, and assign to the RowSource of cboFindAsUTypeField. lngI = Len(strOut) - Len(mstrcSep) If lngI > 0 Then With frm.cboFindAsUTypeField .RowSource = Left(strOut, lngI) .Value = .ItemData(0) 'Initialize to the first item in the list. End With bResult = True 'Return True: the list loaded successfully. End If End If 'Show the filter controls. (Separate routine, since they could fail if the control does not exist.) Call ShowHideControl(frm, "cboFindAsUTypeField", bResult) Call ShowHideControl(frm, "txtFindAsUTypeValue", bResult) 'Return value FindAsUTypeLoad = bResult Exit_Handler: Set ctl = Nothing Set rs = Nothing Exit Function Err_Handler: Call LogError(Err.Number, Err.Description, conMod & ".FindAsUTypeLoad", "Form " & strForm) Resume Exit_Handler End Function Public Function FindAsUTypeChange(frm As Form) As Boolean On Error GoTo Err_Handler 'Purpose: Filter the form, by the control named in cboFindAsUTypeField and the value in txtFindAsUTypeValue. 'Return: True unless an error occurred. 'Usage: The code assigns this to the Change event of the text box, and the AfterUpdate event of the combo. Dim strText As String 'The text of the text box. Dim lngSelStart As Long 'Selection Starting point. Dim strField As String 'Name of the field to filter on. Dim bHasFocus As Boolean 'True if the text box has focus (since it can be called from the combo too.) Const strcTextBox = "txtFindAsUTypeValue" 'If the text box has focus, remember the selection insert point and use its Text. Otherwise use its Value. bHasFocus = (frm.ActiveControl.Name = strcTextBox) If bHasFocus Then strText = frm!txtFindAsUTypeValue.Text lngSelStart = frm!txtFindAsUTypeValue.SelStart Else strText = Nz(frm!txtFindAsUTypeValue.Value, vbNullString) End If 'Save any uncommitted edits in the form. (This loses the insertion point, and converts Text to Value.) If frm.Dirty Then frm.Dirty = False End If 'Read the filter field name from the combo. strField = Nz(frm.cboFindAsUTypeField.Column(micFilterField), vbNullString) 'Unfilter if there is no text to find, or no control to filter. Otherwise, filter. If (strText = vbNullString) Or (strField = vbNullString) Then frm.FilterOn = False Else frm.Filter = strField & " Like """ & IIf(mbcStartOfField, vbNullString, mstrcWildcardChar) & _ strText & mstrcWildcardChar & """" frm.FilterOn = True End If 'If the control had focus, restore focus if necessary, and set the insertion point. If bHasFocus Then If frm.ActiveControl.Name <> strcTextBox Then frm(strcTextBox).SetFocus End If If strText <> vbNullString Then frm!txtFindAsUTypeValue = strText frm!txtFindAsUTypeValue.SelStart = lngSelStart End If End If 'Return True if the routine completed without error. FindAsUTypeChange = True Exit_Handler: Exit Function Err_Handler: Select Case Err.Number Case 2474 Resume Next Case 2185 'Text box loses focus when no characters left. Resume Exit_Handler Case Else MsgBox "Error " & Err.Number & ": " & Err.Description, vbExclamation, "txtFindAsUTypeValue_Change" Resume Exit_Handler End Select End Function Private Function Caption4Control(frm As Form, ctl As control) As String On Error GoTo Err_Handler 'Purpose: Dim strCaption As String '1st choice: Assign the caption of the attached label. strCaption = ctl.Controls(0).Caption '2nd choice: Read the caption from the label over the column in a continuous form. If strCaption = vbNullString Then strCaption = CaptionFromHeader(frm, ctl) End If 'Strip the trailing semicolon. If Right$(strCaption, 1&) = ":" Then strCaption = Left$(strCaption, Len(strCaption) - 1&) End If 'Strip the ampersand hotkey. If InStr(strCaption, "&") > 0& Then strCaption = Replace(strCaption, "&&", Chr$(31)) strCaption = Replace(strCaption, "&", vbNullString) strCaption = Replace(strCaption, Chr$(31), "&") End If '3rd choice: Use the control name. If strCaption = vbNullString Then strCaption = ctl.Name End If Caption4Control = strCaption Exit_Handler: Exit Function Err_Handler: Select Case Err.Number Case 2467& Resume Next Case Else MsgBox "Error " & Err.Number & ": " & Err.Description, vbExclamation, "Caption4Control()" Resume Exit_Handler End Select End Function Private Function CaptionFromHeader(frm As Form, ctl As control) As String On Error GoTo Err_Handler 'Purpose: Look for a label in the column header, directly over the control, in continuous form view. 'Return: Caption of the label if found. Dim ctlHeader As control 'controls in the header of the form. Const icRadius = 120 'one twelveth of an inch, in twips. 'If we are in Form view, and it's a Continuous Form, ' and there is a label in the Form Header directly above the column, return its Caption. If (frm.CurrentView = 1) And (frm.DefaultView = 1) Then For Each ctlHeader In frm.Section(acHeader).Controls If ctlHeader.ControlType = acLabel Then If (ctlHeader.Left > ctl.Left - icRadius) And (ctlHeader.Left < ctl.Left + icRadius) Then CaptionFromHeader = ctlHeader.Caption End If End If Next End If Exit_Handler: Set ctlHeader = Nothing Exit Function Err_Handler: If Err.Number <> 2462& Then 'No such Section. Call LogError(Err.Number, Err.Description, conMod & ".CaptionFromHeader") End If Resume Exit_Handler End Function Private Function HasUnboundControls(frm As Form, ParamArray avarControlNames()) As Boolean On Error GoTo Err_Handler 'Purpose: Return true if all the controls named in the array are present on the form, and are unbound. Dim lngI As Long Dim bCancel As Boolean If UBound(avarControlNames) > 0& Then 'Loop through the named controls on the form. For lngI = LBound(avarControlNames) To UBound(avarControlNames) If frm.Controls(avarControlNames(lngI)).ControlSource <> vbNullString Then bCancel = True Exit For End If Next 'If we did not drop to the error handler, the form has the named controls. HasUnboundControls = Not bCancel End If Exit_Handler: Exit Function Err_Handler: Resume Exit_Handler End Function Private Function MaxParentNumber(frm As Form) As Long On Error GoTo Err_Handler 'Purpose: Return the PageIndex of the tab page that the control is on. 'Return: -1 if setting directly on the form, else the PageIndex of the last page of the tab control. 'Note: PageIndex is zero based, so subtract 1 from the count of pages. Dim ctl As control 'Each control on the form. Dim lngReturn As Long lngReturn = mlngcOnTheForm 'Initialize to no tab control. For Each ctl In frm.Controls If ctl.ControlType = acTabCtl Then lngReturn = ctl.Pages.Count - 1 Exit For 'A form can have only one tab control. End If Next MaxParentNumber = lngReturn Exit_Handler: Exit Function Err_Handler: Call LogError(Err.Number, Err.Description, conMod & ".MaxParentNumber") Resume Exit_Handler End Function Private Function ParentNumber(ctl As control) As Integer On Error Resume Next 'Purpose: Return the PageIndex of the tab page that the control is on. 'Return: -1 if setting directly on the form, else the page of the tab control. 'Note: This works for text boxes and combos, not for labels or controls in an option group. Dim iReturn As Integer iReturn = ctl.Parent.PageIndex If Err.Number <> 0& Then iReturn = mlngcOnTheForm End If ParentNumber = iReturn End Function Private Function ShowHideControl(frm As Form, strControlName As String, bShow As Boolean) As Boolean On Error Resume Next 'Purpose: Show or hide a control on the form, without error message. 'Return: True if the contorl's Visible property was set successfully. 'Arguments: frm = a reference to the form where the control is expected. ' strControlName = the name of the control to show or hide. ' bShow = True to make visible; False to make invisible. 'Note: This is a separate routine, since hiding a non-existant control will error. frm.Controls(strControlName).Visible = bShow ShowHideControl = (Err.Number = 0&) End Function Private Function GetFilterField(ctl As control) As String On Error GoTo Err_Handler 'Purpose: Determine the field name to use when filtering on this control. 'Return: The field name the control is bound to, except for combos. ' In Access 2002 and later, we return the syntax Access uses for filtering these controls. 'Argument: The control we are trying to filter. 'Note: We don't use the Recordset of the combo, because: ' a) it's not supported earlier than Access 2002, and ' b) it's often not loaded at this point. ' Instead, we OpenRecordset to get the source field name, ' which works even if the field is aliased in the RowSource. ' Opening for append only is quicker, as it loads no existing records. Dim rs As DAO.Recordset 'To get information about the combo's RowSource. Dim iColumn As Integer 'The first visible column of the combo (zero-based.) Dim strField As String 'Return value: the field name to use for the filter string. Dim bCancel As Boolean 'Flag to not filter on this control. If ctl.ControlType = acComboBox Then iColumn = FirstVisibleColumn(ctl) If iColumn = ctl.BoundColumn - 1 Then 'The bound column is the first visible column: filter on the control source field. strField = "[" & ctl.ControlSource & "]" Else 'In Access 2002 and later, we can use the lookup syntax Access uses, if the source is a Table/Query. If Int(Val(SysCmd(acSysCmdAccessVer))) >= 10 Then If ctl.RowSourceType = "Table/Query" Then Set rs = DBEngine(0)(0).OpenRecordset(ctl.RowSource, dbOpenDynaset, dbAppendOnly) With rs.Fields(iColumn) strField = "[Lookup_" & ctl.Name & "].[" & .SourceField & "]" End With rs.Close Else bCancel = True 'Hidden bound column not supported if RowSourceType is Value List or call-back function. End If Else bCancel = True 'Hidden bound column not supported for versions earlier than Access 2002. End If End If Else 'Not a combo: filter on the control source field. strField = "[" & ctl.ControlSource & "]" End If If strField <> vbNullString Then GetFilterField = strField ElseIf Not bCancel Then GetFilterField = "[" & ctl.ControlSource & "]" End If Set rs = Nothing Exit_Handler: Exit Function Err_Handler: Call LogError(Err.Number, Err.Description, conMod & ".GetFilterField") Resume Exit_Handler End Function Private Function FirstVisibleColumn(cbo As ComboBox) As Integer On Error GoTo Err_Handler 'Purpose: Return the column number of the first visible column in a combo. 'Return: Column number. ZERO-BASED! 'Argument: The combo to examine. 'Note: Also returns zero on error. Dim i As Integer 'Loop controller. Dim varArray As Variant 'Array of the combo's ColumnWidths values. Dim iResult As Integer 'Colum number to return. Dim bFound As Boolean 'Flag that we found a value to return. If cbo.ColumnWidths = vbNullString Then 'If no column widths are specified, the first column is visible. iResult = 0 bFound = True Else 'Parse the ColumnWidths string into an array, and find the first non-zero value. varArray = Split(cbo.ColumnWidths, mstrcSep) For i = LBound(varArray) To UBound(varArray) If varArray(i) <> 0 Then iResult = i bFound = True Exit For End If Next 'If the column widths ran out before all columns were checked, the next column is the first visible one. If Not bFound Then If i < cbo.ColumnCount Then iResult = i bFound = True End If End If End If FirstVisibleColumn = iResult Exit_Handler: Exit Function Err_Handler: Call LogError(Err.Number, Err.Description, conMod & ".FirstVisibleColumn") Resume Exit_Handler End Function '------------------------------------------------------------------------------------------------ 'You may prefer to replace this with a true error logger. See http://allenbrowne.com/ser-23a.html Private Function LogError(ByVal lngErrNumber As Long, ByVal strErrDescription As String, _ strCallingProc As String, Optional vParameters, Optional bShowUser As Boolean = True) As Boolean On Error GoTo Err_LogError ' Purpose: Generic error handler. ' Arguments: lngErrNumber - value of Err.Number ' strErrDescription - value of Err.Description ' strCallingProc - name of sub|function that generated the error. ' vParameters - optional string: List of parameters to record. ' bShowUser - optional boolean: If False, suppresses display. ' Author: Allen Browne, allen@allenbrowne.com Dim strMsg As String ' String for display in MsgBox Select Case lngErrNumber Case 0 Debug.Print strCallingProc & " called error 0." Case 2501 ' Cancelled 'Do nothing. Case 3314, 2101, 2115 ' Can't save. If bShowUser Then strMsg = "Record cannot be saved at this time." & vbCrLf & _ "Complete the entry, or press <Esc> to undo." MsgBox strMsg, vbExclamation, strCallingProc End If Case Else If bShowUser Then strMsg = "Error " & lngErrNumber & ": " & strErrDescription MsgBox strMsg, vbExclamation, strCallingProc End If LogError = True End Select Exit_LogError: Exit Function Err_LogError: strMsg = "An unexpected situation arose in your program." & vbCrLf & _ "Please write down the following details:" & vbCrLf & vbCrLf & _ "Calling Proc: " & strCallingProc & vbCrLf & _ "Error Number " & lngErrNumber & vbCrLf & strErrDescription & vbCrLf & vbCrLf & _ "Unable to record because Error " & Err.Number & vbCrLf & Err.Description MsgBox strMsg, vbCritical, "LogError()" Resume Exit_LogError End Function
Karim Vaziri Regards,
- Edited by kvaziri Saturday, August 25, 2018 9:06 PM
