Some Microsoft Configuration Manager (ConfigMgr) WMI classes make use of\u00a0lazy properties<\/strong>. These are properties that are not returned from WqlConnectionManager.ExecuteQuery()<\/a> by default in order to reduce the time taken for large queries to be processed.<\/p>\n\n\n\n Note<\/strong><\/p>\n\n\n\n When using IResultObject.Get()<\/a> or WqlConnectionManager.GetInstance()<\/a> the lazy properties are<\/strong> returned.<\/p>\n<\/blockquote>\n\n\n\n Here is an extract of the SMS_Collection<\/a> class description on MSDN<\/a>:<\/p>\n\n\n\n CollectionID<\/strong> CollectionRules<\/strong> The Qualifiers<\/strong> entry for each property is important as it shows the primary key (‘key<\/strong>‘) for the class and also which of the properties are lazy properties (‘lazy<\/strong>‘).<\/p>\n\n\n\n Lazy properties are either set to null<\/strong> or blank after retrieving using ExecuteQuery(). If you are only reading properties of a class and you don’t require access to the lazy properties then there is no need to call Get() on them – and it is more efficient when working with large query sets. But you must<\/strong> call Get() or use GetInstance() in the following scenarios:<\/p>\n\n\n\n Writing an object that contains lazy properties back to SCCM without first retrieving those lazy properties will corrupt the object.<\/strong><\/p>\n\n\n\n The examples on this page can be downloaded from the GitHub repo<\/a>:<\/p>\n\n\n\n This example uses ExecuteQuery to access a collection and then the Get<\/strong> method to get lazy properties CollectionRules<\/strong>.<\/p>\n\n\n\n The rules are disposed using an extension method. See IResultObject Disposal<\/a> \/ GetArrayItems<\/strong> for details.<\/p>\n\n\n\n\n
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Data type: String
Access type: Read-only
Qualifiers: [key<\/strong>, read]<\/span>
Unique auto-generated ID containing eight characters. The default value is “”.
The format of the collection ID is the site code that created the collection followed by a five-digit hexadecimal serial number, for example, “JAX0002C”. The default Configuration Manager collections, created during the installation, use the “SMS” prefix, for example, “SMS00001”.<\/p>\n\n\n\n
Data type: SMS_CollectionRule Array
Access type: Read\/Write
Qualifiers: [lazy<\/strong>]<\/span><\/p>\n<\/blockquote>\n\n\n\n\n
Examples and Downloads<\/h2>\n\n\n\n
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IResultObject – Read Lazy Properties from SMS_Collection<\/h3>\n\n\n\n