How to remove null value from Lambda expression or Array

[User 8677026]

Here is my code: //Line below shows an email msg obj with To segment being an array (could have null to x number of receipients/emails): emailMessage.EmailParamHeaders.To //Below is creation of mail message obj: MailMessage m = new MailMessage(); //Line blow is adding each To email address to the "m" object emailMessage.EmailParamHeaders.To.ToArray().ToList().ForEach(x => m.To.Add(x)); How can I only add the elements of the array "To" where value is not null? Thank you in advance.

[kevinnicol]

try this

emailMessage.EmailParamHeaders.To.ToArray().ToList().ForEach(x => {if(m != null) m.To.Add(x);});

[User 8677026]

Thank you so much for the answer, that worked with minor change: emailMessage.EmailParamHeaders.To.ToArray().ToList().ForEach(x => { if (x != null) m.To.Add(x); });

[Pete OHanlon]

Why are you converting to array, and then to a list? Also, if your email message supports AddRange, an alternative is to try the following?

var addresses = (from p in emailMessage.EmailParamHeaders.To
where p != null
select p).ToList();
if (addresses != null && addresses.Count>0)
m.To.AddRange(addresses);

Depending what's going on inside the Add method, you can often find that an AddRange works more efficiently.

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