AWS SDK for .NET Documentation
ExpectedState Property
AmazonAmazon.DynamoDBv2.DocumentModelPutItemOperationConfigExpectedState Did this page help you?   Yes   No    Tell us about it...
The expected state of data in DynamoDB. Note: setting both Expected and ExpectedState is not supported and will result in an exception being thrown. For the operation to succeed, the data in DynamoDB must match the conditions specified in the ExpectedState.
Declaration Syntax
public ExpectedState ExpectedState { get; set; }

Assembly: AWSSDK (Module: AWSSDK) Version: (