Sets the start date of the request.

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 RequestSpotInstancesRequest WithValidFrom( string validFrom )

- validFrom (String)
- Start date of the request. If this is a one-time request, the request remains active until all instances launch, the request expires, or the request is canceled. If the request is persistent, it remains active until it expires or is canceled. Default: Request is effective immediately

this instance