Sample: Using the WMI Event Provider with the .NET Framework

The following sample creates an application in C# that uses the WMI Event Provider to return event data for all data definition language (DDL) events that occur on a default installation instance of SQL Server.

Example

The example compiles by using the following command file:

set compiler_path=C:\WINNT\Microsoft.NET\Framework\v2.0.50110  
  
%compiler_path%\csc %1  

using System;  
using System.Management;  
  
class SQLWEPExample   
{  
    public static void Main(string[] args)  
    {  
        string query =  @"SELECT * FROM DDL_EVENTS " ;  
        // Default namespace for default instance of SQL Server   
        string managementPath =  
            @"\\.\root\Microsoft\SqlServer\ServerEvents\MSSQLSERVER";  
        ManagementEventWatcher  watcher =   
            new ManagementEventWatcher(new WqlEventQuery (query));  
        ManagementScope scope = new ManagementScope (managementPath);  
        scope.Connect();  
        watcher.Scope = scope;  
        Console.WriteLine("Watching...");  
        while (true)  
        {  
            ManagementBaseObject obj = watcher.WaitForNextEvent();  
            Console.WriteLine("Event!");  
            foreach (PropertyData data in obj.Properties)  
            {  
                Console.Write("{0}:", data.Name);  
                if (data.Value == null)  
                {  
                    Console.WriteLine("<null>");  
                }  
                else  
                {  
                    Console.WriteLine(data.Value.ToString());  
                }  
            }  
            Console.WriteLine("-----");  
            Console.WriteLine();  
            Console.WriteLine();  
        }  
    }  
}  

See Also

WMI Provider for Server Events Concepts