How to pass parameters to triggers from Application

See more:

SQL-Server-2008R2

I have three table

1. tbllogin -> id, name, pwd

2. tblstudentinfo -> stdid, name, fathername

3. tblstudentinfo_audit -> Id, Action.

protected void Page_Load(object sender, EventArgs e)
       {
           string id=Session["id"].ToString();
           string name = Session["name"].ToString();
          // Response.Write(id+ " " +name);
       }

       protected void btnsave_Click(object sender, EventArgs e)
       {
           string con = ConfigurationManager.ConnectionStrings["conn"].ConnectionString;
           SqlConnection conn = new SqlConnection();
           conn.ConnectionString = con;
           SqlCommand cmd = new SqlCommand();
           cmd.Connection = conn;
           cmd.CommandText = "insert into tblstudentinfo(studentname, fathername) values('"+txtstdname.Text+"', '"+txtfthername.Text+"')";
           cmd.CommandType = CommandType.Text;
           SqlDataAdapter da = new SqlDataAdapter(cmd);
           DataSet ds = new DataSet();
           da.Fill(ds);


       }

I want to send the id to triggers.

create trigger instblstudentinfo on tblstudentinfo
for insert
as
begin
declare @id int;
declare @changes varchar(100);

select @id=i.id from selected i;
set @changes='Record Inserted';

insert into tblstudentinfo_audit(id, changes) values(@id, @changes)

end

How can we do that..?