You can create an override for a property or configuration parameter for a rule. A property override changes the default value of a rule property, and a configuration override changes the default value of a custom configuration setting for a rule. If you want to create an override for a rule, use the or class. These classes are derived from the class.

Only the Enabled property can be overridden for rules. To figure out which parameters can be overridden, you must look at the definition of the rule in the management pack that defines the rule. All the parameters that can be overridden are defined in the OverrideableParameters element of the rule. You can also call the method to get the list of parameters programmatically.

The following example creates an override for the Enabled property of a rule:

using System;
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.Text;
using Microsoft.EnterpriseManagement;
using Microsoft.EnterpriseManagement.Administration;
using Microsoft.EnterpriseManagement.Common;
using Microsoft.EnterpriseManagement.Configuration;
using Microsoft.EnterpriseManagement.Monitoring;

namespace SDKSamples
{
	class Program
	{
		//---------------------------------------------------------------------
		static void Main(string[] args)
		{
			ManagementGroup					 mg;
			ManagementPack					mp;
			ManagementPackClassCriteria			 classCriteria;
			ManagementPackClass monitoringClass;
			ManagementPackRuleCriteria ruleCriteria;
			ManagementPackRule rule;
			ManagementPackRulePropertyOverride  ruleOverride;

			mg = new ManagementGroup("localhost");

			mp = mg.ManagementPacks.GetManagementPacks(new ManagementPackCriteria("DisplayName='OverrideTestMP'"))[0];

			classCriteria = new ManagementPackClassCriteria("Name='Microsoft.SQLServer.2005.Database'");

			monitoringClass = mg.EntityTypes.GetClasses(classCriteria)[0];

			ruleCriteria = new ManagementPackRuleCriteria("DisplayName='Collect Database Free Space (%)'");
		
			rule = mg.Monitoring.GetRules(ruleCriteria)[0];

			ruleOverride = new ManagementPackRulePropertyOverride(mp, "SampleRuleOverride");

			ruleOverride.Rule		 = rule;
			ruleOverride.Property	 = ManagementPackWorkflowProperty.Enabled;
			ruleOverride.Value		= "false";
			ruleOverride.Context		= monitoringClass;
			ruleOverride.DisplayName	= "SampleRuleOverride";

			mp.Verify();
		
			//Save the changes into the management pack.
			mp.AcceptChanges();
	}	
}
}

See Also