Get UserID of the user using ASP.NET Membership

Retreiving the UserId for a user while using the ASP.NET Login controls is very simple, yet it still is one of the most frequently asked questions on the forums. Here's how to do so:

C#


    protected void Page_Load(object sender, EventArgs e)


    {


        System.Web.Security.MembershipUser mu = System.Web.Security.Membership.GetUser();


        string strUsrId = mu.ProviderUserKey.ToString();       


    }




VB.NET


    Protected Sub Page_Load(ByVal sender As Object, ByVal e As EventArgs)


        Dim mu As System.Web.Security.MembershipUser = System.Web.Security.Membership.GetUser()


        Dim strUsrId As String = mu.ProviderUserKey.ToString()


    End Sub




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About The Author

Suprotim Agarwal
Suprotim Agarwal, Developer Technologies MVP (Microsoft Most Valuable Professional) is the founder and contributor for DevCurry, DotNetCurry and SQLServerCurry. He is the Chief Editor of a Developer Magazine called DNC Magazine. He has also authored two Books - 51 Recipes using jQuery with ASP.NET Controls. and The Absolutely Awesome jQuery CookBook.

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3 comments:

JD said...

When I run the C# code, it gives an error:


Object reference not set to an instance of an object.


Which doesnt make sense..

Its not triggering till after logging in to the site. Any ideas?

alkhabr said...

i think it should be
Protected Sub Page_Load(ByVal sender As Object, ByVal e As EventArgs)

Dim mu As System.Web.Security.MembershipUser = System.Web.Security.Membership.GetUser("user name")

Dim strUsrId As String = mu.ProviderUserKey.ToString()

End Sub

Anonymous said...

Thanks a lot