FindFirst, FindLast, FindNext, FindPrevious Methods
Applies To
Dynaset-Type Recordset object, Recordset object, Snapshot-Type Recordset object.
Description
Locates the first, last, next, or previous record in a dynaset- or snapshot-type Recordset object that satisfies the specified criteria and makes that record the current record (Microsoft Jet workspaces only).
Syntax
recordset.{FindFirst | FindLast | FindNext | FindPrevious} criteria
The Find methods have these parts.
Part | Description |
|
recordset | An object variable that represents an existing dynaset- or snapshot-type Recordset object. |
criteria | A String used to locate the record. It is like the WHERE clause in an SQL statement, but without the word WHERE. |
Remarks
If you want to include all the records in your search — not just those that meet a specific condition — use the Move methods to move from record to record. To locate a record in a table-type Recordset, use the Seek method.
If a record matching the criteria isn't located, the current record pointer is unknown, and the NoMatch property is set to True. If recordset contains more than one record that satisfies the criteria, FindFirst locates the first occurrence, FindNext locates the next occurrence, and so on.
Each of the Find methods begins its search from the location and in the direction specified in the following table.
Find method | Begins searching at | Search direction |
|
FindFirst | Beginning of recordset | End of recordset |
FindLast | End of recordset | Beginning of recordset |
FindNext | Current record | End of recordset |
FindPrevious | Current record | Beginning of recordset |
When you use the FindLast method, the Microsoft Jet database engine fully populates your Recordset before beginning the search, if this hasn't already happened.
Using one of the Find methods isn't the same as using a Move method, however, which simply makes the first, last, next, or previous record current without specifying a condition. You can follow a Find operation with a Move operation.
Always check the value of the NoMatch property to determine whether the Find operation has succeeded. If the search succeeds, NoMatch is False. If it fails, NoMatch is True and the current record isn't defined. In this case, you must position the current record pointer back to a valid record.
Using the Find methods with Microsoft Jet-connected ODBC -accessed recordsets can be inefficient. You may find that rephrasing your criteria to locate a specific record is faster, especially when working with large recordsets.
In an ODBCDirect workspace, the Find and Seek methods are not available on any type of Recordset object, because executing a Find or Seek through an ODBC connection is not very efficient over the network. Instead, you should design the query (that is, using the source argument to the OpenRecordset method) with an appropriate WHERE clause that restricts the returned records to only those that meet the criteria you would otherwise use in a Find or Seek method.
When working with Microsoft Jet-connected ODBC databases and large dynaset-type Recordset objects, you might discover that using the Find methods or using the Sort or Filter property is slow. To improve performance, use SQL queries with customized ORDER BY or WHERE clauses, parameter queries, or QueryDef objects that retrieve specific indexed records.
You should use the U.S. date format (month-day-year) when you search for fields containing dates, even if you're not using the U.S. version of the Microsoft Jet database engine; otherwise, the data may not be found. Use the Visual Basic Format function to convert the date. For example:
rstEmployees.FindFirst "HireDate > #" _
& Format(mydate, 'm-d-yy' ) & "#"
If criteria is composed of a string concatenated with a non-integer value, and the system parameters specify a non-U.S. decimal character such as a comma (for example, strSQL = "PRICE > " & lngPrice, and lngPrice = 125,50), an error occurs when you try to call the method. This is because during concatenation, the number will be converted to a string using your system's default decimal character, and Microsoft Jet SQL only accepts U.S. decimal characters.
Notes
- For best performance, the criteria should be in either the form "field = value" where field is an indexed field in the underlying base table, or "field LIKE prefix" where field is an indexed field in the underlying base table and prefix is a prefix search string (for example, "ART*").
- In general, for equivalent types of searches, the Seek method provides better performance than the Find methods. This assumes that table-type Recordset objects alone can satisfy your needs.
See Also
AbsolutePosition property, Move method, MoveFirst, MoveLast, MoveNext, MovePrevious methods, NoMatch property, Seek method.
Specifics (Microsoft Access)
When specifying criteria for the Find methods, you must be careful to reference fields and controls properly, and to construct the criteria string correctly. For more information on restricting data to a subset of records and quotation marks in strings, see Domain Aggregate Functions.
When you use a bookmark in a Microsoft Access module, you must include an Option Compare Binary statement in the Declarations section of the module. A bookmark is a Variant array of Byte data, so the string comparison method for the module must be binary. If a bookmark is evaluated with a text-based string comparison method, such as the Option Compare Text statement or the default setting for the Option Compare Database statement, the current record may be set to an incorrect record.
Example
This example uses the FindFirst, FindLast, FindNext, and FindPrevious methods to move the record pointer of a Recordset based on the supplied search string and command. The FindAny function is required for this procedure to run.
Sub FindFirstX()
Dim dbsNorthwind As Database
Dim rstCustomers As Recordset
Dim strCountry As String
Dim varBookmark As Variant
Dim strMessage As String
Dim intCommand As Integer
Set dbsNorthwind = OpenDatabase("Northwind.mdb")
Set rstCustomers = dbsNorthwind.OpenRecordset( _
"SELECT CompanyName, City, Country " & _
"FROM Customers ORDER BY CompanyName", _
dbOpenSnapshot)
Do While True
' Get user input and build search string.
strCountry = _
Trim(InputBox("Enter country for search."))
If strCountry = "" Then Exit Do
strCountry = "Country = '" & strCountry & "'"
With rstCustomers
' Populate recordset.
.MoveLast
' Find first record satisfying search string. Exit
' loop if no such record exists.
.FindFirst strCountry
If .NoMatch Then
MsgBox "No records found with " & strCountry & "."
Exit Do
End If
Do While True
' Store bookmark of current record.
varBookmark = .Bookmark
' Get user choice of which method to use.
strMessage = "Company: " & !CompanyName & _
vbCr & "Location: " & !City & ", " & _
!Country & vbCr & vbCr & _
strCountry & vbCr & vbCr & _
"[1 - FindFirst, 2 - FindLast, " & _
vbCr & "3 - FindNext, " & _
"4 - FindPrevious]"
intCommand = Val(Left(InputBox(strMessage), 1))
If intCommand < 1 Or intCommand > 4 Then Exit Do
' Use selected Find method. If the Find fails,
' return to the last current record.
If FindAny(intCommand, rstCustomers, _
strCountry) = False Then
.Bookmark = varBookmark
MsgBox "No match--returning to " & _
"current record."
End If
Loop
End With
Exit Do
Loop
rstCustomers.Close
dbsNorthwind.Close
End Sub
Function FindAny(intChoice As Integer, _
rstTemp As Recordset, _
strFind As String) As Boolean
' Use Find method based on user input.
Select Case intChoice
Case 1
rstTemp.FindFirst strFind
Case 2
rstTemp.FindLast strFind
Case 3
rstTemp.FindNext strFind
Case 4
rstTemp.FindPrevious strFind
End Select
' Set return value based on NoMatch property.
FindAny = IIf(rstTemp.NoMatch, False, True)
End Function
Example (Microsoft Access)
The following example creates a dynaset-type Recordset object and then uses the FindFirst method to locate the first record satisfying the specified criteria. The procedure then finds the remaining records that satisfy the criteria.
Sub FindRecord()
Dim dbs As Database, rst As Recordset
Dim strCriteria As String
' Return reference to current database.
Set dbs = CurrentDb
' Define search criteria.
strCriteria = "[ShipCountry] = 'UK' And [OrderDate] >= #1-1-95#"
' Create a dynaset-type Recordset object based on Orders table.
Set rst = dbs.OpenRecordset("Orders", dbOpenDynaset)
' Find first matching record.
rst.FindFirst strCriteria
' Check if record is found.
If rst.NoMatch Then
MsgBox "No record found."
Else
' Find other matching records.
Do Until rst.NoMatch
Debug.Print rst!ShipCountry; " "; rst!OrderDate
rst.FindNext strCriteria
Loop
End If
rst.Close
Set dbs = Nothing
End Sub