ASP.NET: MemberShip - get the UserID of the User

44 comments ↓

#1 George Flicker on 04.05.06 at 1:49 pm

Oh yea, thanks. Google is your friend

#2 Julio on 04.05.06 at 3:48 pm

I asked on asp.net for those few lines but didn’t get an answer, until now, thanks!

#3 JC on 07.27.06 at 11:26 am

If I have this code inside a class, should I use a httpcontext ?
I am not sure when I have to use HttpContext.Current

#4 andreas.kraus on 07.27.06 at 11:33 am

In this case you don’t have to use HttpContext, Membership is globally available.

#5 crige on 08.24.06 at 3:12 am

Thank u ,Very much !

#6 Liam on 08.29.06 at 3:04 pm

Spent a long time looking for this else where. Your a star!

#7 rao on 10.04.06 at 1:06 pm

thanks it very usfull could you please give some code sample i tried to get the userid i could not

many thanks

#8 ykk on 10.26.06 at 2:08 am

Man that saved a headache! Thank you!!!

#9 omar on 01.21.07 at 11:38 am

Thank you guy!!

#10 Reinart on 02.08.07 at 12:20 pm

As simple as that. Thank you so much.

#11 Gary on 03.08.07 at 11:37 pm

When I try to use this I get:
Membership does not contain a definition for GetUser(). Am I missing something?

Thanks.

#12 Andy Mo on 05.09.07 at 2:45 am

Cheers mate! After 2 hours of google, finally a straight forward answer!

#13 clouds on 05.23.07 at 5:00 am

Nice one! Many thanks~

#14 Scott Farbman on 05.29.07 at 9:20 pm

Translation to VB.NET

Dim UserID As String
Dim MemUser As MembershipUser
MemUser = Membership.GetUser()
UserID = MemUser.ProviderUserKey.ToString()


#15 shazia on 05.31.07 at 7:44 am

Helpful tip out there

#16 shazia on 05.31.07 at 7:45 am

But how to get the userid when creating a user using createuserwizard of asp.net 2.0

#17 andreas.kraus on 05.31.07 at 8:05 am

Hi shazi, you can use this here:

   29       MembershipUser user = Membership.GetUser((sender as CreateUserWizard).UserName);

   30         string UserID = user.ProviderUserKey.ToString();  

hth,
Andreas

#18 Quentin on 07.19.07 at 1:23 pm

I love you - thanks.

I am definately bookmarking your blog.

#19 Islamegy on 07.21.07 at 2:21 pm

Yesssssss.. I was always think there is some way microsoft developers implemented to get user GUID.. Thanx alot

#20 Bill Kuhn - MCSE on 08.31.07 at 9:52 pm

Simplifying just a little..

Dim UserID as String

UserID = Membership.GetUser.ProviderUserKey.ToString()

And Thanks! I had been looking for an easy way to get the UserID for a long time!

#21 Trevor on 09.04.07 at 10:50 am

Hi
I get the following error when trying to get the UserID of the table [aspnet_Users].
Error: Conversion failed when converting from a character string to uniqueidentifier

Code used:
MembershipUser _user = Membership.GetUser();

DataFile.InsertParameters["commited_to_database_by_UserId"].Type = TypeCode.Empty;
DataFile.InsertParameters["commited_to_database_by_UserId"].DefaultValue = _user.ProviderUserKey.ToString();

I am using active directory as my membership provider, should this make any diffrence to the code required.

#22 andreas.kraus on 09.04.07 at 10:56 am

Hi Trevor,

ProviderUserKey is returning an object. It looks like you need a UniqueIdentifier for your code instead of a string. Try to cast it as Guid.

hth

#23 trialblazer on 10.09.07 at 3:19 pm

I’m trying to use this function Membership.GetUser() from LoggedIn event of Login Control in ASP.NET 2/C#. but it is returning null? Any clue

#24 andreas.kraus on 10.09.07 at 3:37 pm

trialblazer,

you’d have to use something like:

MembershipUser myuser = Membership.GetUser(UserName)

hth,
Andreas

#25 Petr on 10.24.07 at 12:41 am

Thanks, that’s what I have been looking for.

#26 Dusty Reagan on 10.31.07 at 1:08 am

Simple! Thanks a ton!

#27 Neil McDonald on 10.31.07 at 4:22 pm

I’ve been looking for this for a while now - thanks!

#28 Zapp on 11.21.07 at 12:45 pm

Thanks a bunch!

#29 suresh on 12.12.07 at 8:43 am

Thanks a lot

#30 Abbas on 01.11.08 at 12:03 pm

Thanks a lot,
This is very helpfull for me,
May Allah success you….

#31 Chuck on 01.17.08 at 10:55 pm

Thank you this helps.

#32 Chris on 01.21.08 at 7:23 am

Ok, but how would you put into an insert parameter…so when someone adds a record I know what user added it.

Do you do in a hidden field or in the asp:Parameter? And please show/write the example verbatum since I am an new asp.net user.

I tried this but didn’t work in C# 3.5
<input id=”UserID” type=”hidden” value=”" />

#33 DieBagger on 03.20.08 at 11:51 am

Thx for this hint

#34 Pedro Lopes on 04.16.08 at 4:46 pm

Hello,

This piece of code is great! I

just have one HUGE problem: when I try to get the ProviderUserKey the server always returns the same key!!!

I use
“MembershipUser user = Membership.GetUser(username);”
and then
“user.ProviderUserKey.ToString();”
and the ProviderUserKey is always the same whatever user logs in… I don’t really understand why!

Any suggestions?

Thanks in advance!

#35 Nikks on 04.23.08 at 10:01 pm

I think this code works only for the currently logged in users? I mean username should be passed before getting UserID from database.
What if for some email verification purpose UserID is required before login process.

#36 andreas.kraus on 04.24.08 at 7:36 am

Pedro:
Check your Application ID settings, I think you’re running 2 different Application IDs in your Membership Environment.

Nikks:
In that case you just pass on the UserID or UserName to Membership.GetUser();.

For example:
MembershipUser myObject = Membership.GetUser(”Bill”);

#37 Josken on 05.13.08 at 11:35 pm

I have trouble when i try to register a new user while logged in with another user using the CreateUserWizard-control and then login with the new account.

Then I get

Membership.GetUser().UserName == null

Other then that UserName returns the correct login name.

Any ideas?

#38 Lulu on 05.19.08 at 1:30 pm

Thank you very much, been searching for hours for this!

ASP.NET Forums are useless, i’ve never got a reply in shorter than a few weeks of waiting, and even then they’ve never solved my issues.

Pretty useless when you’be got to meet deadlines.

Thanks for this!

#39 Chad on 05.23.08 at 6:42 am

You can always do it as a 1 liner…

string userId = Membership.GetUser(User.Identity.Name).ProviderUserKey.ToString();

#40 Tim Cross on 06.04.08 at 8:30 pm

Thank you so much, and to Scott for the VB version. And thanks to Google for finding this solution so quickly

#41 Ddon on 06.26.08 at 7:23 am

I am getting this error
MembershipUser user = Membership.GetUser((sender as CreateUserWizard).UserName);
string UserID = user.ProviderUserKey.ToString();
Response.Write(UserID);

Object reference not set to an instance of an object.

Any Idar Please Help..

#42 alesin on 07.28.08 at 4:25 pm

For Ddon.

Maybe:

Membership.GetUser() is definitely null in your case. Meaning that the user
has not actually been logged in

#43 muadib on 08.01.08 at 11:24 pm

Thanks!

#44 daniel on 09.01.08 at 3:58 pm

Membership.GetUser() gets the currently logged in user. If you are trying to GetUser() during log in it will always be null.

You have to do GetUser() AFTER the user is logged in, which means AFTER the page lifecycle of logging in.

I have run into this same problem. What I am doing now is using GetUser(UserName) which doesn’t depend on the user being authenticated.

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