SharePoint 2010 Membership Error :“The method or operation is not implemented”

Hello Friends

I was working with “Claims based authentication” in SharePoint 2010, develop registration page for new user so first I need to check whether that user already exists or not so when I checked for GetUser of Membership it always  throws error

I got this error: “The method or operation is not implemented”.

Nothing about my membership provider was custom, it was all default .Net stuff. I also found this to happen on other methods provided by the Membership object.

We can find out from here

MembershipProvider _provider = Membership.Providers["MyCustomMembershipProvider"];

MembershipUser user = _provider.GetUser(“username”, true);

if (user == null)

{

}

 ["MyCustomMembershipProvider "] is provider name in web config file

Hope this helps!!!

Disha Shah