>>Hi all,
>>
>>I need to verify a DataRow has valid values and thus I am checking my PK which is a Guid.
>>
>>I am doing this:
>>

>>if ((Guid)dr["Track_Id"] != null || (Guid)dr["Track_Id"] != Guid.Empty)
>>{
>>
>>}
>>

>>
>>I am getting a message "Unreachable expression code detected" on the last portion of the check.
>
>Second expression would only be evaluated if (Guid)dr["Track_Id"] evaluated to null . I guess you intended &&......

Nice catch!