Copies the object if it has not been modified since the specified time, otherwise returns a PreconditionFailed.

C# |
[ObsoleteAttribute("The With methods are obsolete and will be removed in version 2 of the AWS SDK for .NET. See http://aws.amazon.com/sdkfornet/#version2 for more information.")] public CopyPartRequest WithUnmodifiedSinceDate( DateTime unmodifiedSinceDate )

- unmodifiedSinceDate (DateTime)
- The date/time to check the modification timestamp against

this instance

Copies the object if it hasn't been modified since the
specified time; otherwise returns a 412 (precondition failed).
Constraints: This property can be used with ETagToMatch,
but cannot be used with other conditional copy properties.