OpenSchema Method Example (VB)

This example uses the OpenSchema method to display the name and type of each table in the Pubs database.

'BeginOpenSchemaVB  

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

Public Sub Main()  
    On Error GoTo ErrorHandler  

    Dim Cnxn As ADODB.Connection  
    Dim rstSchema As ADODB.Recordset  
    Dim strCnxn As String  

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

    Set rstSchema = Cnxn.OpenSchema(adSchemaTables)  

    Do Until rstSchema.EOF  
        Debug.Print "Table name: " & _  
            rstSchema!TABLE_NAME & vbCr & _  
            "Table type: " & rstSchema!TABLE_TYPE & vbCr  
        rstSchema.MoveNext  
    Loop  

    ' clean up  
    rstSchema.Close  
    Cnxn.Close  
    Set rstSchema = Nothing  
    Set Cnxn = Nothing  
    Exit Sub  

ErrorHandler:  
    ' clean up  
    If Not rstSchema Is Nothing Then  
        If rstSchema.State = adStateOpen Then rstSchema.Close  
    End If  
    Set rstSchema = 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  
'EndOpenSchemaVB  

This example specifies a TABLE_TYPE query constraint in the OpenSchema method Criteria argument. As a result, only schema information for the Views specified in the Pubs database are returned. The example then displays the name(s) and type(s) of each table(s).

Attribute VB_Name = "OpenSchema"  

See Also

OpenSchema Method
Recordset Object (ADO)