The following example demonstrates how to connect to the System Center Data Access service by using a provided user name, domain, and password. The example also shows how to handle some common connection failures.

/// <summary>
/// Prompts for a username, domain, and password, and connects to the 
/// SDK Service by using the supplied credentials.
/// </summary>
using System;
using System.Collections.Generic;
using Microsoft.EnterpriseManagement;
using Microsoft.EnterpriseManagement.Common;
using System.Security;
using System.ServiceProcess;
using System.Text;

namespace SDKSamples
{
	class Program
	{
		static void Main(string[] args)
		{
			// Define the server that you want to connect to.
			string serverName = "serverName";
		
			Console.WriteLine("Please specify the credentials to use when connecting to the SDK Service.");
			// Get name.
			Console.Write("User name: ");
			string name = Console.ReadLine();

			// Get domain.
			Console.Write("Domain: ");
			string userDomain = Console.ReadLine();

			// Get password.
			SecureString password = new SecureString();
			Console.Write("Password: ");
			while (true)
			{
				// Display asterisks for entered characters.
				ConsoleKeyInfo cki = Console.ReadKey(true);

				// If password is complete, connect with supplied credentials.
				if (cki.Key == ConsoleKey.Enter)
				{
					Console.Write(Environment.NewLine);
					break;
			}
				else if (cki.Key == ConsoleKey.Backspace)
				{
					// Remove the last asterisk from the console.
					if (password.Length > 0)
					{
						Console.SetCursorPosition(Console.CursorLeft - 1, Console.CursorTop);
						Console.Write(" ");
						Console.SetCursorPosition(Console.CursorLeft - 1, Console.CursorTop);
						password.RemoveAt(password.Length - 1);
				}
			}
				else
				{
					password.AppendChar(cki.KeyChar);
					Console.Write("*");
			}
		}


			try
			{
				ManagementGroupConnectionSettings mgSettings =
					new ManagementGroupConnectionSettings(serverName);
				mgSettings.UserName = name;
				mgSettings.Domain = userDomain;
				mgSettings.Password = password;

				Console.WriteLine("Connecting to the SDK Service as user: " + name);

				ManagementGroup mg = ManagementGroup.Connect(mgSettings);
				if (mg.IsConnected)
					Console.WriteLine("Connection succeeded.");
				else
					throw new InvalidOperationException("Not connected to an SDK Service.");
		}
			catch (ServerDisconnectedException sde)
			{
				Console.WriteLine("\nConnection failed. " + sde.Message);
				if (sde.InnerException != null)
					Console.WriteLine(sde.InnerException.Message);
			
				// Call custom method to prompt the user for credentials if needed.
			
		}
			catch (ServiceNotRunningException snr)
			{
				Console.WriteLine(snr.Message);

				// Make one attempt to start the service.
				System.ServiceProcess.ServiceController sc = new 
					ServiceController("localhost", serverName);

				Console.WriteLine("Attempting to start the SDK Service on " + serverName + ".");
				sc.Start();

				// Wait 20 seconds for it to enter the Running state.
				sc.WaitForStatus(ServiceControllerStatus.Running, new TimeSpan(0, 0, 20));

				if (sc.Status == ServiceControllerStatus.Running)
				{
					ManagementGroupConnectionSettings mgSettings =
					new ManagementGroupConnectionSettings(serverName);
					mgSettings.UserName = name;
					mgSettings.Domain = userDomain;
					mgSettings.Password = password;

					ManagementGroup mg = ManagementGroup.Connect(mgSettings);
					if (mg.IsConnected)
						Console.WriteLine("Connection succeeded.");
					else
						throw new InvalidOperationException("Not connected to an SDK Service.");
			}
				else
				{
					throw new InvalidOperationException("Unable to restart and connect to the SDK Service.");
			}
		}
	}
}
}

The code example requires a reference to the system.serviceprocess.dll file. This assembly is included in the Microsoft .NET Framework.

Instead of explicitly calling the Connect method, you can instantiate a new ManagementGroup object by using the new keyword, as shown in the following example:

mg = new ManagementGroup(mgSettings);

is the same as:

mg = ManagementGroup.Connect(mgSettings);

Concepts

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