In Classic ASP, if you're working with ADO (ActiveX Data Objects) and want to handle or display errors, you can use the On Error Resume Next statement along with the Err object and optionally ADODB.Connection.Errors.

? Basic Pattern: Catch ADO Errors in ASP

<%On Error Resume Next ' Enables error handlingDim conn, sqlSet conn = Server.CreateObject("ADODB.Connection")conn.Open "your_connection_string"sql = "SELECT * FROM NonExistentTable"conn.Execute sqlIf Err.Number <> 0 Then    Response.Write "<b>ADO Error:</b><br>"    Response.Write "Number: " & Err.Number & "<br>"    Response.Write "Description: " & Err.Description & "<br>"    Err.ClearEnd Ifconn.CloseSet conn = Nothing%>

? Detailed ADO Error Reporting (Connection.Errors Collection)

If your connection object supports it (like with SQL Server), use this for more detailed ADO-specific error messages:

<%On Error Resume NextSet conn = Server.CreateObject("ADODB.Connection")conn.Open "your_connection_string"conn.Execute "SELECT * FROM BadTable"If Err.Number <> 0 Then    Dim adoErr    For Each adoErr In conn.Errors        Response.Write "<b>ADO Error:</b><br>"        Response.Write "Number: " & adoErr.Number & "<br>"        Response.Write "Source: " & adoErr.Source & "<br>"        Response.Write "Description: " & adoErr.Description & "<br><br>"    Next    conn.Errors.Clear    Err.ClearEnd Ifconn.CloseSet conn = Nothing%>

? Tips

• Always call Err.Clear and conn.Errors.Clear after handling errors to reset the error state.

• conn.Errors may contain multiple errors, especially with SQL Server.

? Example Output

ADO Error:Number: -2147217865Description: [Microsoft][ODBC SQL Server Driver][SQL Server]Invalid object name 'BadTable'.

Would you like a reusable HandleError function or a way to log these to a file or database?