[SOLVED] How to set email to usename field automatically?

I don't use username field and allow user to log in by email and password.
When the user registers, CB automatically set firstname and lastname into username field as I configured "Name Style = Fist and Last Name filed" in CB Configuration page.

My question is how can I configure to set email to username field instead of 'firstname and lastname'?

When I configure 'Name Style = Single Name Field', email is saved into username field but 'First Name' and 'Last Name' are not shown in registration form. I still need them.

For Email to pass to Username you have to hide username and name fields on registration. The alternative is use CB Auto Actions to set the username field to email address.

I used CB Auto Action to set email to username after registration and profile edit. It works. Thank.

But how can I hide User Type (cb_usertype) in profile edit form as it is not allowed to change after registered.

I used CB Conditional to hide it as below. The problem is the field is shown in a few seconds. After a few seconds, it is hidden. I don't want user to see it.

Display = Field conditional self
If... Fields = User Group (cb_usertype)
Is... Operator = Not Empty
Then... Mode = Hide
For... Registration = Disabled
Profile Edit = Enabled
Profile View = Enabled
Userlists Search = Disabled
Userlists View = Disabled
As... Direction = One-Way

I can't use CB Privacy too to hide it because this field value is checking to show or not to show other fields.

Set it to read only. This way it's still rendered but can't be changed. Believe this should still work with CB Conditional, but I can't recall if it ignores read only or not.

Thank for the answer.

Is there any way to hide it rather than read only? CB Conditional works but the user can see the field before it disappears. It makes the user confused. He saw it just now then it disappears.

Set it to read only then use CSS to hide its field row. Right click the input and Inspect Element with Chrome or Firefox with Firebug to find its classes/IDs, you'll need the ID from its field row to hide it.