How to save multiple Textbox and radiobutton's value in for loop

I use linq to sql,i dynamicallu create textobes and radiobuttons as per value of database,
Here is the code for that,

var r = from a in db.EMR_EVENTs
                        where a.EventID == (int)Session["eventid"]
 

                        select new
                        {
                            No_Of_Extra_Invitee=a.Allowed_guest_per_invitee
                        };
 
                var ev1 = r.First();
                int? count = ev1.No_Of_Extra_Invitee;
           
              
                int? rowCount = ev1.No_Of_Extra_Invitee;
                Session["rc"] = rowCount;
      
        for (int i = 0; i < rowCount; i++)
        {
 
            TextBox txtfirstname = new TextBox();
            TextBox txtlastname = new TextBox();
            TextBox txtemail = new TextBox();
 
            RadioButton chkmale = new RadioButton();
            RadioButton chkfemale = new RadioButton();
 

            txtfirstname.ID = "txtfirstname" + i.ToString();
            txtlastname.ID = "txtlastname" + i.ToString();
            txtemail.ID = "txtemail" + i.ToString();
            txtfirstname.CssClass = "form-control";
            txtlastname.CssClass = "form-control";
            txtemail.CssClass = "form-control";
            txtemail.Text = "E-Mail Address";
            txtfirstname.Text = "First Name";
            txtlastname.Text = "Last Name";
 
            
            chkmale.ID = "chkmale" + i.ToString();
            chkfemale.ID = "chkfemale" + i.ToString();
 

            chkmale.Text = "Male";
            chkfemale.Text = "Female";
 
            pnl.Controls.Add(txtfirstname);
            pnl.Controls.Add(txtlastname);
            pnl.Controls.Add(txtemail);
            pnl.Controls.Add(chkmale);
            pnl.Controls.Add(chkfemale);
        
 
        }

if i got No_Of_Extra_Invitee=2 then i got 6 textbox and 4 radiobuttons

Now i want to saved this control's value(text),though i give it default text,but i want to save it's runtime value so in submit button i implement like this,

protected void Submit(object sender, EventArgs e)
        {
            int rccount = Convert.ToInt32(Session["rc"]);
 
            ExtraInviteeBL eb = new ExtraInviteeBL();
            for (int i = 0; i <rccount; i++)
            {
                //logic for add value of textbox's and radiobutton's in database

            }

 

but now i don't know how insert value of this textbox and radiobuttns can anyone give me suggestion for that
Thanks in advance..!

mark this answer if it will really help you,

Thanks&Regards
ketan