Recordset.FindNext Method (DAO)

Artículo
10/12/2015

Locates the next record in a dynaset- or snapshot-type Recordset object that satisfies the specified criteria and makes that record the current record (Microsoft Access workspaces only).

Syntax

expression .FindNext(Criteria)

expression A variable that represents a Recordset object.

Parameters

Name	Required/Optional	Data Type	Description
Criteria	Required	String	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

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 Access database engine-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 Access database engine-connected ODBC databases and large dynaset-type v 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 Access 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 Access SQL only accepts U.S. decimal characters.

Note

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.

Example

The following example shows how to use the FindFirst and FindNext methods to find a record in a Recordset.

Sample code provided by: Access 2010 Programmers Reference book cover The Microsoft Access 2010 Programmer’s Reference | About the Contributors

Sub FindOrgName()

    Dim dbs As DAO.Database
    Dim rst As DAO.Recordset
    
    'Get the database and Recordset
    Set dbs = CurrentDb
    Set rst = dbs.OpenRecordset("tblCustomers")

    'Search for the first matching record   
    rst.FindFirst "[OrgName] LIKE '*parts*'"
    
    'Check the result
    If rst.NoMatch Then
        MsgBox "Record not found."
        GotTo Cleanup
    Else
        Do While Not rst.NoMatch
            MsgBox "Customer name: " & rst!CustName
            rst.FindNext "[OrgName] LIKE '*parts*'"
        Loop

        'Search for the next matching record
        rst.FindNext "[OrgName] LIKE '*parts*'"
    End If
   
    Cleanup:
        rst.Close
        Set rst = Nothing
        Set dbs = Nothing

End Sub

About the Contributors

Wrox Press is driven by the Programmer to Programmer philosophy. Wrox books are written by programmers for programmers, and the Wrox brand means authoritative solutions to real-world programming problems.

Compartir a través de