Microsoft KB Archive/105976

= ACC: RecordCount Property Returns Incorrect Number of Records =

Article ID: 105976

Article Last Modified on 1/18/2007

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APPLIES TO


 * Microsoft Access 1.0 Standard Edition
 * Microsoft Access 1.1 Standard Edition
 * Microsoft Access 2.0 Standard Edition
 * Microsoft Access 95 Standard Edition
 * Microsoft Access 97 Standard Edition

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This article was previously published under Q105976



Moderate: Requires basic macro, coding, and interoperability skills.



SYMPTOMS
The RecordCount property, when used with a recordset or snapshot, returns a recordset that has an incorrect number of records.

This article assumes that you are familiar with Visual Basic for Applications and with creating Microsoft Access applications using the programming tools provided with Microsoft Access. For more information about Visual Basic for Applications, please refer to your version of the "Building Applications with Microsoft Access" manual.

NOTE: Visual Basic for Applications is called Access Basic in Microsoft Access versions 1.x and 2.0. For more information about Access Basic, please refer to the "Introduction to Programming" manual in Microsoft Access version 1.x or the "Building Applications" manual in Microsoft Access version 2.0.



CAUSE
For recordsets and snapshots, Microsoft Access does not automatically return the number of records that exist in the recordset. Rather, it returns the number of records accessed.



RESOLUTION
To determine the exact number of records in a recordset or snapshot, use the MoveLast method before checking the RecordCount property.



STATUS
This behavior is by design.



MORE INFORMATION
The following Visual Basic function, MyWrongRecordCount, returns the number 1 for the Customers table in the sample database Northwind.mdb (or NWIND.MDB in versions 1.x and 2.0) because only one record has been accessed. The MyRightRecordCount function uses the MoveLast method first to access all records in the recordset and then to return the RecordCount value.

Steps to Reproduce Behavior
 Open the sample database Northwind.mdb (or NWIND.MDB in versions 1.x and 2.0). Create a module and type the following line in the Declarations section if it is not already there:

Option Explicit

  Type the following procedures:

In Microsoft Access 7.0 and 97: '===========================================================     ' The following function, MyWrongRecordCount, demonstrates ' the incorrect way to use the RecordCount property to count ' records in a dynaset. '===========================================================     Function MyWrongRecordCount Dim MyDB As Database Dim MyRS as Recordset Set MyDB = CurrentDB Set MyRS = MyDb.OpenRecordset("Customers", dbOpenDynaset) MyWrongRecordCount = MyRS.RecordCount MyRS.Close End Function

'===========================================================     ' The following function, MyRightRecordCount, demonstrates ' the correct way to use the RecordCount property to count ' records in a dynaset. '===========================================================     Function MyRightRecordCount Dim MyDB As Database Dim MyRS as Recordset Set MyDB = CurrentDB Set MyRS = MyDb.OpenRecordset("Customers", dbOpenDynaset) MyRS.MoveLast MyRightRecordCount = MyRS.RecordCount MyRS.Close End Function

In Microsoft Access 2.0:

'===========================================================     ' The following function, MyWrongRecordCount, demonstrates ' the incorrect way to use the RecordCount property to count ' records in a dynaset. '===========================================================     Function MyWrongRecordCount Dim MyDB As Database Dim MyRS as Recordset Set MyDB = CurrentDB Set MyRS = MyDb.OpenRecordset("Customers", DB_OPEN_DYNASET) MyWrongRecordCount = MyRS.RecordCount MyRS.Close End Function

'===========================================================     ' The following function, MyRightRecordCount, demonstrates ' the correct way to use the RecordCount property to count ' records in a dynaset. '===========================================================     Function MyRightRecordCount Dim MyDB As Database Dim MyRS as Recordset Set MyDB = CurrentDB Set MyRS = MyDb.OpenRecordset("Customers", DB_OPEN_DYNASET) MyRS.MoveLast MyRightRecordCount = MyRS.RecordCount MyRS.Close End Function

In Microsoft Access 1.x:

'===========================================================     ' The following function, MyWrongRecordCount, demonstrates ' the incorrect way to use the RecordCount property to count ' records in a dynaset. '===========================================================     Function MyWrongRecordCount Dim MyDB As Database Dim MyRS as Dynaset Set MyDB = CurrentDB Set MyRS = MyDb.CreateDynaset("Customers") MyWrongRecordCount = MyRS.RecordCount MyRS.Close End Function

'===========================================================     ' The following function, MyRightRecordCount, demonstrates ' the correct way to use the RecordCount property to count ' records in a dynaset. '===========================================================     Function MyRightRecordCount Dim MyDB As Database Dim MyRS as Dynaset Set MyDB = CurrentDB Set MyRS = MyDb.CreateDynaset("Customers") MyRS.MoveLast MyRightRecordCount = MyRS.RecordCount MyRS.Close End Function   To test these functions, type the following lines in the Debug window (or Immediate window in versions 1.x and 2.0), and then press ENTER after you've entered each one: ?MyWrongRecordCount Note that the function returns 1. ?MyRightRecordCount Note that the function returns the correct number of records in the Customers table. </ol>

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