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ADO Error

ADO provides error-handling mechanisms to manage runtime issues effectively. The Errors collection of the Connection object captures detailed information about database-related errors.

Key Topics

Capturing Errors

Example

<%
    Dim conn
    On Error Resume Next
    Set conn = Server.CreateObject("ADODB.Connection")
    conn.Open "Provider=InvalidProvider;Data Source=InvalidSource;"

    If Err.Number <> 0 Then
        Response.Write("Error Captured: " & Err.Description)
        Err.Clear
    End If
    Set conn = Nothing
%>

Explanation: This example captures a connection error and displays an appropriate error message using Err.Description.

Displaying Error Details

Example

<%
    Dim conn, i
    Set conn = Server.CreateObject("ADODB.Connection")

    On Error Resume Next
    conn.Open "Provider=InvalidProvider;Data Source=InvalidSource;"

    If conn.Errors.Count > 0 Then
        For i = 0 To conn.Errors.Count - 1
            Response.Write("Error " & i & ": " & conn.Errors(i).Description & "<br>")
        Next
    End If

    Set conn = Nothing
%>

Explanation: This example iterates through the Errors collection of the connection object to display detailed error messages.

Key Takeaways

  • ADO errors provide detailed information about runtime issues.
  • Use the Errors collection to access multiple error details.
  • Implement proper error handling to build robust applications.
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