可空的TimeSpan？到TimeSpan

Question

如何将此C＃代码行从Nullable TimeSpan转换为TimeSpan 由于DateStamp是Nullable DateTime

 TimeSpan? timestamp = DateTime.Now - modelXyz.DateStamp

Answer 1

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