Object reference not set to an instance of an object errors when using CreateUserWizard

Question

The error - \"Object reference not set to an instance of an object\" occured when I hit the \"Next\' button of my CreateUserWizard controls. I had checked through my codes that

Answer 1

I had checked through my codes that I did not leave any of my variables null. but i still can't solve this errors.

You have not checked all your variables, otherwise this error would not be occurring.

Have you checked your DataSource to ensure the SqlDataSource is being found? The InsertParameters property of the DataSource to ensure that it is not null? The UserGUID to ensure that it is not null?