Where is findfirst?
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Where is findfirst?
Base does not appear to have a FindFirst function on the rowset like MS Access, what is the equivalent Base function?
MSAccess VBA example:
Say there is a VB combo box which lists all the prospects in the database and allows the user to select a particular prospect and then have the form automatically go to that person's data record.
Private Sub Find_Combo_AfterUpdate() Dim strCriteria As String strCriteria = "[Prospect_ID] =" & Me.Find_Combo Me.recordsetclone.FindFirst (strCriteria) If me.recordsetclone.NoMatch Then MsgBox "No entry found" Else Form_F_Prospects.Bookmark = me.recordsetclone.Bookmark End If End Sub
For this type of simple single column search, it is easy enough to create our own find first equivalent with AOO Basic:
Sub Find_Combo_AfterUpdate( OEv as Object) ' Oev is the event object automatically sent to sub procedure call ' Oev will have a property Source that is the control that triggered ' the call to this procedure Dim oForm as variant ' The dataform obejct Dim oComboBox as variant ' The combobox control Dim oBkMark as variant oForm = oEv.Source.Model.Parent oComboBox = oForm.getByName( "Find_Combo" ) oBkMark = FindFirst( oForm.CreateResultSet(), "Prospect_ID", oComboBox.Text ) ' oForm.CreateResultSet() is here equivalent to me.recordsetclone if not IsEmpty( oBkMark ) then oForm.moveToBookmark( oBkMark ) else msgBox( oComboBox.Text & " not found" ) end if end sub function FindFirst( oRS as variant, ColName as string, SearchVal as string ) as variant ' oRS is a resultSet object ' ColName is the name of a column in the resultset ' SearchVal is dim colIDX as integer dim NotFound as variant FindFirst = notFound colIDX = oRS.FindColumn( ColName ) oRS.First do if oRS.getString( colIDX ) <> Searchval oRS.Next if oRS.isAfterLast then exit do endif else FindFirst = oRS.getBookMark exit do end if loop while oRS.isAfterLast <> True end function