how to retrieve login user id

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After customer validation i want to retrieve his user id.. I am using below code for that but it is giving error : Object reference not set to an instance of an object.

C#

if (Membership.ValidateUser(txt_email.Text, txt_password.Text))
            {

                string userId = Membership.GetUser().ProviderUserKey.ToString();
            }

Any possible reasons????

Posted 11-Mar-14 3:20am

Harpreet_125

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Krunal Rohit · Answer 1 · 2014-03-11T03:33:00

Solution 1

This might work,

C#

string userId = Membership.GetUser("userName").ProviderUserKey.ToString(); // pass your name in GetUser.

-KR

Posted 11-Mar-14 3:33am

Krunal Rohit

Dave Kreskowiak · Answer 2 · 2014-03-11T03:33:00

Solution 2

Either GetUser returned null, or ProviderUserKey did. You didn't test either of these to see if they returned null. In the end, you tried to call .ToString() on null. That's why you got the error message you did.

Posted 11-Mar-14 3:33am

Dave Kreskowiak