You use the SMS Provider to access and modify System Center 2012 R2 Configuration Manager data. The SMS Provider is a Windows Management Instrumentation (WMI) provider that can be accessed through either WMI or managed classes.
WMI Architecture
WMI is designed to function as a middle layer, by serving as a standard interface between management applications and the systems that they manage.
WMI Object Model
Management applications and scripts work with WMI through the WMI Object Model. The object model defines the programming interface to WMI.
For more information about WMI, see Windows Management Instrumentation.
The main elements of the WMI Object Model are shown in the following table:
| Element | Description |
|---|---|
|
Locator |
Used to locate a WMI Service that is running on a local or remote computer. |
|
Service object |
Represents an actual connection to a WMI provider. This is the main point of contact to WMI programs. |
|
Objects |
A managed object is a logical or physical enterprise component, such as a hard drive, network adapter, database system, operating system, process, or service. A managed object communicates with WMI through a WMI provider. |
|
Events |
Used to track changes to WMI objects at run time. Events can be captured as objects and then manipulated in the same ways that any other objects, except that they cannot be changed or saved in WMI. |
|
Properties |
Supplies descriptive or operational information about an object. For example, a Win32_DiskDrive object includes a property called InterfaceType, which might have the value of IDE for your C: drive. Properties can also be set to particular values, if the property is changeable. Setting InterfaceType to SCSI is not appropriate, because the only way to change the actual interface type is to replace the controller card. However, you can set a share name to a different value. |
|
Methods |
Actions that you can execute on objects. For example, a Win32_Directory object includes a method called Compress() that allows the contents of a folder to be compressed in the same way as compressing the contents by using the Windows graphical user interface. |
|
Qualifiers |
Characteristics of objects, properties, and methods. For example, a qualifier for a property might indicate that it is read-only, or it might list the allowable values for the property. A qualifier for an object might be that it is read-only. |
Schema
WMI objects are described by classes, providing definitions of their properties, attributes, and other information. These classes are organized into an inheritance hierarchy supporting object associations and grouped by areas of interest, such as networking, applications, and systems. Each area of interest represents a schema, which is a subset of the information that is available about the managed environment.
For more information about the Configuration Manager schema, see Configuration Manager Schema.
For information about accessing the SMS Provider using WMI, see WMI Configuration Manager Provider Fundamentals
WMI and .NET Framework applications
Configuration Manager has a .NET Framework library, Microsoft.ConfigurationManager.ManagementProvider, that wraps WMI and allows you to write managed applications.
For information about accessing the SMS Provider by using .NET Framework, see Managed SMS Provider Fundamentals in Configuration Manager
You can also use the .NET Framework WMI management namespace System.Management, but this does not provide any Configuration Manager-specific interfaces. It is, however, the recommended way to use managed code on a System Center 2012 R2 Configuration Manager client. For more information, see Configuration Manager Client WMI Programming.