Sub CreateMaintenanceWindow(connection, 							 _
							targetCollectionID, 					 _
							newMaintenanceWindowName, 			 _
							newMaintenanceWindowDescription, 		_
							newMaintenanceWindowServiceWindowSchedules, _
							newMaintenanceWindowIsEnabled, 		_
							newMaintenanceWindowServiceWindowType)
									 
	' Build a query to get the specified collection. 
	 collectionSettingsQuery = "SMS_CollectionSettings.CollectionID='" & targetCollectionID & "'"
	 
	' Get the collection settings instance for the targetCollectionID.
	Set allCollectionSettings = connection.ExecQuery("Select * From SMS_CollectionSettings Where CollectionID = '" & targetCollectionID & "'")
   
	' If a collection settings instance doesn't exist for the target collection, create one.
	If allCollectionSettings.Count = 0 Then
		Wscript.Echo "Creating collection settings instance."
		Set collectionSettingsInstance = connection.Get("SMS_CollectionSettings").SpawnInstance_
		collectionSettingsInstance.CollectionID = targetCollectionID
		collectionSettingsInstance.Put_
	End If  

	' Get the specific collection settings instance.
	Set collectionSettingsInstance = connection.Get("SMS_CollectionSettings.CollectionID='" & targetCollectionID &"'" )
			 
	' Create and populate a temporary SMS_ServiceWindow object with the new maintenance window values. 
	Set tempServiceWindowObject = connection.Get("SMS_ServiceWindow").SpawnInstance_
			 
	' Populate temporary SMS_ServiceWindow object with the new maintenance window values.
	tempServiceWindowObject.Name = newMaintenanceWindowName
	tempServiceWindowObject.Description = newMaintenanceWindowDescription
	tempServiceWindowObject.ServiceWindowSchedules = newMaintenanceWindowServiceWindowSchedules
	tempServiceWindowObject.IsEnabled = newMaintenanceWindowIsEnabled
	tempServiceWindowObject.ServiceWindowType = newMaintenanceWindowServiceWindowType

	' Populate the local array list with the existing service window objects (from the target collection).
	tempServiceWindowArray = collectionSettingsInstance.ServiceWindows
  
	' Add the newly created service window object to the temporary array.
	ReDim Preserve tempServiceWindowArray (Ubound(tempServiceWindowArray) + 1)
	Set tempServiceWindowArray(Ubound(tempServiceWindowArray)) = tempServiceWindowObject

	' Replace the existing service window objects from the target collection with the temporary array that includes the new service window.
	collectionSettingsInstance.ServiceWindows = tempServiceWindowArray

	' Save the collection settings instance with the new service window object.
	collectionSettingsInstance.Put_

	' Output success message.
	wscript.echo "New Maintenance Window created."

End Sub

public void CreateMaintenanceWindow(WqlConnectionManager connection, 
									string targetCollectionID, 
									string newMaintenanceWindowName, 
									string newMaintenanceWindowDescription, 
									string newMaintenanceWindowServiceWindowSchedules, 
									bool newMaintenanceWindowIsEnabled, 
									int newMaintenanceWindowServiceWindowType)
{
	try
	{
		// Create a object to hold the collection settings instance (used to check whether a collection settings instance exists). 
		IResultObject collectionSettingsInstance = null;

		// Get the collection settings instance for the targetCollectionID.
		IResultObject allCollectionSettings = connection.QueryProcessor.ExecuteQuery("Select * from SMS_CollectionSettings where CollectionID='" + targetCollectionID + "'");
	
		// Enumerate the allCollectionSettings collection (there should be just one item) and save the instance.
		foreach (IResultObject collectionSetting in allCollectionSettings)
		{
			collectionSettingsInstance = collectionSetting;
	}

		// If a collection settings instance doesn't exist for the target collection, create one.
		if (collectionSettingsInstance == null)
		{
			collectionSettingsInstance = connection.CreateInstance("SMS_CollectionSettings");
			collectionSettingsInstance["CollectionID"].StringValue = targetCollectionID;
			collectionSettingsInstance.Put();
			collectionSettingsInstance.Get();
	}

		// Create a new array list to hold the service window object.
		List<IResultObject> tempServiceWindowArray = new List<IResultObject>();

		// Create and populate a temporary SMS_ServiceWindow object with the new maintenance window values.
		IResultObject tempServiceWindowObject = connection.CreateEmbeddedObjectInstance("SMS_ServiceWindow");

		// Populate temporary SMS_ServiceWindow object with the new maintenance window values.
		tempServiceWindowObject["Name"].StringValue = newMaintenanceWindowName;
		tempServiceWindowObject["Description"].StringValue = newMaintenanceWindowDescription;
		tempServiceWindowObject["ServiceWindowSchedules"].StringValue = newMaintenanceWindowServiceWindowSchedules;
		tempServiceWindowObject["IsEnabled"].BooleanValue = newMaintenanceWindowIsEnabled;
		tempServiceWindowObject["ServiceWindowType"].IntegerValue = newMaintenanceWindowServiceWindowType;

		// Populate the local array list with the existing service window objects (from the target collection).
		tempServiceWindowArray = collectionSettingsInstance.GetArrayItems("ServiceWindows");

		// Add the newly created service window object to the local array list.
		tempServiceWindowArray.Add(tempServiceWindowObject);

		// Replace the existing service window objects from the target collection with the temporary array that includes the new service window.
		collectionSettingsInstance.SetArrayItems("ServiceWindows", tempServiceWindowArray);

		// Save the new values in the collection settings instance associated with the target collection.
		collectionSettingsInstance.Put();
}
	catch (SmsException ex)
	{
		Console.WriteLine("Failed. Error: " + ex.InnerException.Message);
		throw;
}
}