是否可以为空的TimeSpan？转到TimeSpan

Question

如何将此行C#代码从可空TimeSpan转换为TimeSpan，因为DateStamp是可空DateTime

 TimeSpan? timestamp = DateTime.Now - modelXyz.DateStamp

Answer 1

TimeSpan? timestamp = DateTime.Now - modelXyz.DateStamp;
if(timestamp.HasValue)
{
    TimeSpan nonNullableTS = timestamp.Value;
}