Object reference not set to an instance of an object.

Question

I badly need help for this C# code:

MembershipUser CurrentUser = Membership.GetUser(User.Identity.Name);
String varUserName = (String)CurrentUser.ProviderUserKey;

When I hit the F5 key, I got this error: "Object reference not set to an instance of an object." which is pointing to the 2nd line of the above code.

My goal is to assign to a variable the current user logged-in in the ASP.Net page..

Thanks soo... much in advance.

Jaish Mathews · Answer

Hi If your authentication mode is Windows User.Identity.Name will give the logged windows user name. But here you are using MemberShipUser class which is using along with Forms authentication. Below things are mandatory in this case . You need to make the Authentication mode to to Forms in side Web.Config like More over before executing the above code you need to varify the user and after verification only you will get valid data in side MemberShipUser. e.g. FormsAuthentication.Authenticate() Frankly say these all activities are out of scope for a single mail. You can google each of the items mentioned by me.

Cresen · Answer

You mean web.config? If yes there's no variable name CurrentUser in the config file... Do you have any solution on how to get the current logged-on user in the ASP.NET page and assign it to a string variable?.

Marimuthu Arigovindasamy · Answer

CurrentUser variable return NULL value. Pls check ur config settings..