AWS SDK Version 3 for .NET
API Reference

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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.

Note:

For PCL this operation is only available in asynchronous form. Please refer to DescribeAlarmHistoryAsync.

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

Syntax

C#
public virtual DescribeAlarmHistoryResponse DescribeAlarmHistory(
         DescribeAlarmHistoryRequest request
)
Parameters
request
Type: Amazon.CloudWatch.Model.DescribeAlarmHistoryRequest

Container for the necessary parameters to execute the DescribeAlarmHistory service method.

Return Value
The response from the DescribeAlarmHistory service method, as returned by CloudWatch.

Exceptions

ExceptionCondition
InvalidNextTokenException The next token specified is invalid.

Examples

This example shows how to get history for an alarm.

Get alarm history example

var client = new AmazonCloudWatchClient();

var request = new DescribeAlarmHistoryRequest
{
  AlarmName =
    "awseb-e-kkbEXAMPLE-stack-CloudwatchAlarmLow-1WVXD9EXAMPLE",
  EndDate = DateTime.Today,
  HistoryItemType = HistoryItemType.Action,
  MaxRecords = 1,
  StartDate = DateTime.Today.Subtract(TimeSpan.FromDays(30))
};

var response = new DescribeAlarmHistoryResponse();

do
{
  response = client.DescribeAlarmHistory(request);

  foreach (var item in response.AlarmHistoryItems)
  {
    Console.WriteLine(item.AlarmName);
    Console.WriteLine(item.HistorySummary);
    Console.WriteLine();
  }

  request.NextToken = response.NextToken;

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

Version Information

.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

See Also