AWS SDK for .NET Documentation
HistoryItemType Property
AmazonAmazon.CloudWatch.ModelAlarmHistoryItemHistoryItemType Did this page help you?   Yes   No    Tell us about it...
The type of alarm history item.

Constraints:

Allowed Values
ConfigurationUpdate, StateUpdate, Action

Declaration Syntax
C#
public string HistoryItemType { get; set; }

Assembly: AWSSDK (Module: AWSSDK) Version: 1.5.60.0 (1.5.60.0)