Count Property Example (VB)

This example demonstrates the Count property with two collections in the Employee database. The property obtains the number of objects in each collection, and sets the upper limit for loops that enumerate these collections. Another way to enumerate these collections without using the Count property would be to use For Each...Next statements.


    'To integrate this code  
    'replace the data source and initial catalog values  
    'in the connection string  

Public Sub Main()  
    On Error GoTo ErrorHandler  

    ' recordset and connection variables  
    Dim rstEmployees As ADODB.Recordset  
    Dim Cnxn As ADODB.Connection  
    Dim strSQLEmployees As String  
    Dim strCnxn As String  

    Dim intLoop As Integer  

    ' Open a connection  
    Set Cnxn = New ADODB.Connection  
    strCnxn = "Provider='sqloledb';Data Source='MySqlServer';" & _  
        "Initial Catalog='Northwind';Integrated Security='SSPI';"  
    Cnxn.Open strCnxn  

    ' Open recordset with data from Employee table  
    Set rstEmployees = New ADODB.Recordset  
    strSQLEmployees = "Employee"  
    'rstEmployees.Open strSQLEmployee, Cnxn, , , adCmdTable  
    rstEmployees.Open strSQLEmployees, Cnxn, adOpenForwardOnly, adLockReadOnly, adCmdTable  
    'the above two lines opening the recordset are identical as  
    'the default values for CursorType and LockType arguments match those specified  

    ' Print information about Fields collection  
    Debug.Print rstEmployees.Fields.Count & " Fields in Employee"  

    For intLoop = 0 To rstEmployees.Fields.Count - 1  
        Debug.Print "   " & rstEmployees.Fields(intLoop).Name  
    Next intLoop  

    ' Print information about Properties collection  
    Debug.Print rstEmployees.Properties.Count & " Properties in Employee"  

    For intLoop = 0 To rstEmployees.Properties.Count - 1  
        Debug.Print "   " & rstEmployees.Properties(intLoop).Name  
    Next intLoop  

    ' clean up  
    Set rstEmployees = Nothing  
    Set Cnxn = Nothing  
    Exit Sub  

    ' clean up  
    If Not rstEmployees Is Nothing Then  
        If rstEmployees.State = adStateOpen Then rstEmployees.Close  
    End If  
    Set rstEmployees = Nothing  

    If Not Cnxn Is Nothing Then  
        If Cnxn.State = adStateOpen Then Cnxn.Close  
    End If  
    Set Cnxn = Nothing  

    If Err <> 0 Then  
        MsgBox Err.Source & "-->" & Err.Description, , "Error"  
    End If  
End Sub  

See Also

Count Property (ADO)