C# and .NET

Question

how can i verificate if : txtCitizenship.Text = GlobalBll.GetCitizenship().FirstOrDefault(c => c.CitizenshipId == tofess.CitizenshipId).CitizenshipName; is NULL or not?

Vulpes · Answer

You'll need to check whether the expression up to FirstOrDefault is null or not because if it is then you'll get an exception when you attempt to access the CitizenshipName property: var v = GlobalBll.GetCitizenship().FirstOrDefault(c => c.CitizenshipId == tofess.CitizenshipId); txtCitizenship.Text = (v != null) ? v.CitizenshipName : ;

Santhosh Kumar Jayaraman · Answer

if ( GlobalBll.GetCitizenship().FirstOrDefault(c => c.CitizenshipId == tofess.CitizenshipId).CitizenshipName!=null) txtCitizenship.Text= ( GlobalBll.GetCitizenship().FirstOrDefault(c => c.CitizenshipId == tofess.CitizenshipId).CitizenshipName; else txtCitizenship.Text='';