API Sisk.Core.Http HttpKnownHeaderNames Copy page Copy as Markdown View as Markdown Copy linkFieldHttpKnownHeaderNames.IfModifiedSinceNamespaceSisk.Core.HttpAssemblySisk.Core.dllIfModifiedSince #The HTTP If-Modified-Since header.Used to make a conditional request, allowing the client to specify that the resource should only be returned if it has been modified since the given date.C# public const string IfModifiedSince = "If-Modified-Since"Field Value #string
