AWS SDK Version 3 for .NET
API Reference

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Container for the parameters to the DescribeAlarmHistory operation. Retrieves the history for the specified alarm. You can filter the results by date range or item type. If an alarm name is not specified, the histories for all alarms are returned.

CloudWatch retains the history of an alarm even if you delete the alarm.

Inheritance Hierarchy


Namespace: Amazon.CloudWatch.Model
Assembly: AWSSDK.CloudWatch.dll
Version: 3.x.y.z


public class DescribeAlarmHistoryRequest : AmazonCloudWatchRequest

The DescribeAlarmHistoryRequest type exposes the following members



Public Property AlarmName System.String

Gets and sets the property AlarmName.

The name of the alarm.

Public Property EndDate System.DateTime

Gets and sets the property EndDate.

The ending date to retrieve alarm history.

Public Property HistoryItemType Amazon.CloudWatch.HistoryItemType

Gets and sets the property HistoryItemType.

The type of alarm histories to retrieve.

Public Property MaxRecords System.Int32

Gets and sets the property MaxRecords.

The maximum number of alarm history records to retrieve.

Public Property NextToken System.String

Gets and sets the property NextToken.

The token returned by a previous call to indicate that there is more data available.

Public Property StartDate System.DateTime

Gets and sets the property StartDate.

The starting date to retrieve alarm history.


This example shows how to get history for an alarm.

Get alarm history example

var client = new AmazonCloudWatchClient();

var request = new DescribeAlarmHistoryRequest
  AlarmName =
  EndDate = DateTime.Today,
  HistoryItemType = HistoryItemType.Action,
  MaxRecords = 1,
  StartDate = DateTime.Today.Subtract(TimeSpan.FromDays(30))

var response = new DescribeAlarmHistoryResponse();

  response = client.DescribeAlarmHistory(request);

  foreach (var item in response.AlarmHistoryItems)

  request.NextToken = response.NextToken;

} while (!string.IsNullOrEmpty(response.NextToken));

Version Information

.NET Standard:
Supported in: 1.3

.NET Framework:
Supported in: 4.5, 4.0, 3.5

Portable Class Library:
Supported in: Windows Store Apps
Supported in: Windows Phone 8.1
Supported in: Xamarin Android
Supported in: Xamarin iOS (Unified)
Supported in: Xamarin.Forms