To synchronously query the System Center 2012 R2 Configuration Manager client Windows Management Instrumentation (WMI), you use a ManagementObjectSearcher object.

To read a lazy property from a System Center 2012 R2 Configuration Manager object that is returned in a query, you get the object instance, which in turn retrieves any lazy object properties from the SMS Provider.

To perform a synchronous query

  1. Set up a connection to the System Center 2012 R2 Configuration Manager client WMI namespace. For more information, see How to Connect to the Configuration Manager Client WMI Namespace by Using System.Management.

  2. Create a ManagementObjectSearcher collection, and specify a WQL query.

  3. Iterate through the ManagementObjectSearcher collection to view the ManagementObject for each WMI object that is returned by the query.

Example

The following C# code example queries for the single SMS_Client object that is on a System Center 2012 R2 Configuration Manager client.

For information about calling the sample code, see How to Call a WMI Class Method by Using System.Management.

C#  Copy Code 
public void QueryObjects(ManagementScope scope)
{
	try
	{
		ManagementObjectSearcher s = new ManagementObjectSearcher
			((scope), new WqlObjectQuery("SELECT * FROM sms_client"));

		foreach (ManagementObject o in s.Get())
		{
			// There is only one instance of SMS_Client, so this should enumerate only once.
			Console.WriteLine("Client version: " + o["ClientVersion"].ToString());
	}
}
	catch (System.Management.ManagementException e)
	{
		Console.WriteLine("Failed to make query: ", e.Message);
		throw;
}
}

This example method has the following parameters:

Parameter Type Description

scope

ManagementScope

Represents a scope (namespace) for management operations.

Compiling the Code

Namespaces

System.

System.Management.

Assembly

System.Management.

Robust Programming

The exception that can be raised is System.Management.ManagementException.

See Also