Fields.Refresh method (DAO)

Applies to: Access 2013, Office 2013

Updates the objects in the specified colletion to reflect the database's current schema.

Syntax

expression .Refresh

expression A variable that represents a Fields object.

Remarks

To determine the position that the Microsoft Access database engine uses for Field objects in the Fields collection of a QueryDef, Recordset, or TableDef object, use the OrdinalPosition property of each Field object. Changing the OrdinalPosition property of a Field object may not change the order of the Field objects in the collection until you use the Refresh method

Use the Refresh method in multiuser environments in which other users may change the database. You may also need to use it on any collections that are indirectly affected by changes to the database. For example, if you change a Users collection, you may need to refresh a Groups collection before using the Groups collection.

A collection is filled with objects the first time it's referred to and won't automatically reflect subsequent changes other users make. If it's likely that another user has changed a collection, use the Refresh method on the collection immediately before carrying out any task in your application that assumes the presence or absence of a particular object in the collection. This will ensure that the collection is as up-to-date as possible. On the other hand, using Refresh can unnecessarily slow performance.

Example

This example uses the Refresh method to update the Fields collection of the Categories table based on changes to the OrdinalPosition data. The order of the Fields in the collection changes only after the Refresh method is used.

    Sub RefreshX() 
     
     Dim dbsNorthwind As Database 
     Dim tdfEmployees As TableDef 
     Dim aintPosition() As Integer 
     Dim astrFieldName() As String 
     Dim intTemp As Integer 
     Dim fldLoop As Field 
     
     Set dbsNorthwind = OpenDatabase("Northwind.mdb") 
     Set tdfEmployees = dbsNorthwind.TableDefs("Categories") 
     
     With tdfEmployees 
     ' Display original OrdinalPosition data and store it 
     ' in an array. 
     Debug.Print _ 
     "Original OrdinalPosition data in TableDef." 
     ReDim aintPosition(0 To .Fields.Count - 1) As Integer 
     ReDim astrFieldName(0 To .Fields.Count - 1) As String 
     For intTemp = 0 To .Fields.Count - 1 
     aintPosition(intTemp) = _ 
     .Fields(intTemp).OrdinalPosition 
     astrFieldName(intTemp) = .Fields(intTemp).Name 
     Debug.Print , aintPosition(intTemp), _ 
     astrFieldName(intTemp) 
     Next intTemp 
     
     ' Change OrdinalPosition data. 
     For Each fldLoop In .Fields 
     fldLoop.OrdinalPosition = _ 
     100 - fldLoop.OrdinalPosition 
     Next fldLoop 
     Set fldLoop = Nothing 
     
     ' Print new data. 
     Debug.Print "New OrdinalPosition data before Refresh." 
     For Each fldLoop In .Fields 
     Debug.Print , fldLoop.OrdinalPosition, fldLoop.Name 
     Next fldLoop 
     
     .Fields.Refresh 
     
     ' Print new data, showing how the field order has been 
     ' changed. 
     Debug.Print "New OrdinalPosition data after Refresh." 
     For Each fldLoop In .Fields 
     Debug.Print , fldLoop.OrdinalPosition, fldLoop.Name 
     Next fldLoop 
     
     ' Restore original OrdinalPosition data. 
     For intTemp = 0 To .Fields.Count - 1 
     .Fields(astrFieldName(intTemp)).OrdinalPosition = _ 
     aintPosition(intTemp) 
     Next intTemp 
     End With 
     
     dbsNorthwind.Close 
     
    End Sub