Event Receiver Item adding - How to get a user name?

Question

At Event Receiver Item Adding I must add name of worker which is adding a items to the list.

Here is my code:

SPListItem item = lstOtherList.Items.Add();
item["Kontrakt"] = properties.AfterProperties["Kontrakt1"];
item["Pracownik"] = properties.AfterProperties["Author"];
item["Dzien"] = dzienStart;
item["Procenty"] = properties.AfterProperties["Procenty"];
// item["ID z Czas Pracy Wpisy"] = properties.BeforeProperties["ID"];
dzienStart = dzienStart.AddDays(1.0);
item.Update();

I try Title Author but at Event Receiver it doesn't work and puts spaces. How can I get the user?

Update:

I was able to do it using the following code in Item Adding:

item["Pracownik"] = properties.UserDisplayName; 

Answer 1

Grzegorz,

On Item Adding the Author field is still not committed because the Item is not made yet..

A similar question is available here:
How to get current logged user in event receivers?

Or in your case if you decide not to make the event receiver synchronous, you can simply use the Author field in ItemAdded event and update the list item again!

I hope this helps