使用asp.net 2.0的CreateUserwizard控件如何向自己的数据表中添加数据

protected void CreateUserWizard1_CreatedUser( object sender, System.EventArgs e)
{  
        MembershipUser user = Membership.GetUser(CreateUserWizard1.UserName);  
        if (user != null)
            Throw New ApplicationException("找不到用户.");  
        Guid userId = (Guid)user.ProviderUserKey;  
       // 获取CreateUserWizard控件中的额外的用户注册信息  
        TextBox myData = CreateUserWizard1.CreateUserStep.ContentTemplateContainer.FindControl("TextBox1") as TextBox;  
        UserInfo userinfo = new UserInfo();  
        userinfo.ID = userId;  
        userinfo.QQ = myData.Text;  
        ……  
        this.AddMyDataToMyDataSource(userinfo);
}  
private void AddMyDataToMyDataSource(UserInfo myData)
{
   //添加数据到自己的数据库表中
}