how-to-handle-configuration-manager-synchronous-errors-by-using-managed-code.md

title	Handle Synchronous Errors by Using Managed Code
description	To handle a Configuration Manager error raised in a synchronous query, catch the SmsQueryException exception.
ms.date	09/20/2016
ms.subservice	sdk
ms.topic	how-to
ms.collection	tier3

How to Handle Configuration Manager Synchronous Errors by Using Managed Code

To handle a Configuration Manager error that is raised in a synchronous query, you catch the SmsQueryException exception. Because this exception is also caught by SMS_Exception], you can catch it and the SmsConnectionException exception in the same catch block.

If the exception that is caught in an SMS_Exception is an SmsQueryException, you can use it to get to the underlying __ExtendedException or SMS_ExtendedException. Because the managed SMS Provider library does not wrap these exceptions, you will need to use the System.Management namespace ManagementException object to access them.

Note

For clarity, most examples in this documentation simply re-throw exceptions. You can replace them with the following example if you want more informative exception information.

To handle a synchronous query error

1. Write code to access the SMS Provider.

2. Use the following example code to catch the SmsQueryException and SmsConnectionException exceptions.

Example

The following C# example function attempts to open a nonexistent SMS_Package package. In the exception handler, the code determines what type of error has been raised and displays its information.

For information about calling the sample code, see Calling Configuration Manager Code Snippets.

public void ExerciseException(WqlConnectionManager connection)
{
    try
    {

        IResultObject package = connection.GetInstance(@"SMS_Package.PackageID='UNKNOWN'");
        Console.WriteLine("Package Name: " + package["Name"].StringValue);
        Console.WriteLine("Package Description: " + package["Description"].StringValue);

    }
    catch (SmsException e)
    {
        if (e is SmsQueryException)
        {
            SmsQueryException queryException = (SmsQueryException)e;
            Console.WriteLine(queryException.Message);

            // Get either the __ExtendedStatus or SMS_ExtendedStatus object and display various properties.
            ManagementException mgmtExcept = queryException.InnerException as ManagementException;

            if (mgmtExcept != null)
            {
                if (string.Equals(mgmtExcept.ErrorInformation.ClassPath.ToString(), "SMS_ExtendedStatus", StringComparison.OrdinalIgnoreCase) == true)
                {
                    Console.WriteLine("Configuration Manager provider exception");
                }

                else if (string.Equals(mgmtExcept.ErrorInformation.ClassPath.ToString(), "__ExtendedStatus", StringComparison.OrdinalIgnoreCase) == true)
                {
                    Console.WriteLine("WMI exception");
                }
                Console.WriteLine(mgmtExcept.ErrorCode.ToString());
                Console.WriteLine(mgmtExcept.ErrorInformation["ParameterInfo"].ToString());
                Console.WriteLine(mgmtExcept.ErrorInformation["Operation"].ToString());
                Console.WriteLine(mgmtExcept.ErrorInformation["ProviderName"].ToString());
            }

        }
        if (e is SmsConnectionException)
        {
            Console.WriteLine("There was a connection error :" + ((SmsConnectionException)e).Message);
            Console.WriteLine(((SmsConnectionException)e).ErrorCode);
        }
    }
}

The example method has the following parameters:

Parameter	Type	Description
connection	- WqlConnectionManager	A valid connection to the provider.

Compiling the Code

This C# example requires:

Namespaces

System

System.Collections.Generic

System.Text

Microsoft.ConfigurationManagement.ManagementProvider

Microsoft.ConfigurationManagement.ManagementProvider.WqlQueryEngine

System.Management

System.ComponentModel

Assembly

microsoft.configurationmanagement.managementprovider

adminui.wqlqueryengine

System.Management

Robust Programming

For more information about error handling, see About Configuration Manager Errors.

See Also

About errors How to Handle Configuration Manager Asynchronous Errors by Using Managed Code