AWS SDK for .NET Documentation
Namespace Property
AmazonAmazon.CloudWatch.ModelPutMetricDataRequestNamespace Did this page help you?   Yes   No    Tell us about it...
The namespace for the metric data.
Note:
You cannot specify a namespace that begins with "AWS/". Namespaces that begin with "AWS/" are reserved for other Amazon Web Services products that send metrics to Amazon CloudWatch.

Constraints:

Length
1 - 255
Pattern
[^:].*

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

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