i have an asp:Table, and has 12 rows. now i want to insert 12 rows in a single button click

Question

<asp:Table ID="tblstudentstrength" runat="server" BorderWidth="2px" CssClass="gradient-with-stop" Enabled="false" BorderColor="black">
     <asp:TableHeaderRow>
     <asp:TableHeaderCell><asp:Label ID="lblclass" runat="server" Text="Class"></asp:Label></asp:TableHeaderCell>
    
     <asp:TableHeaderCell><asp:Label ID="lblnoofstudents" runat="server" Text="No_Of_Students"></asp:Label></asp:TableHeaderCell>
    
     <asp:TableHeaderCell><asp:Label ID="lbloptionalsubject" runat="server" Text="Optional_Subject"></asp:Label></asp:TableHeaderCell>
    
     <asp:TableHeaderCell><asp:Label ID="lblfeeperstudent" runat="server" Text="Fee_Per_Student"></asp:Label></asp:TableHeaderCell>
    
     <asp:TableHeaderCell><asp:Label ID="lblexampapersrequired" runat="server" Text="Exam_Papers Required"></asp:Label></asp:TableHeaderCell>
     </asp:TableHeaderRow>
    
      <asp:TableRow>    
        <asp:TableCell>
        <asp:Label ID="lbllkg" runat="server" Text="L.K.G"></asp:Label>
        </asp:TableCell>
         <asp:TableCell>
        <asp:TextBox ID="txtlkgstudents" runat="server" Width="70px" BackColor="#D6D6D6"></asp:TextBox>
        <asp:RegularExpressionValidator ID="revlkg" runat="server" ErrorMessage="*" ControlToValidate="txtlkgstudents" ValidationExpression="^([0-9])*$" ></asp:RegularExpressionValidator>            
        </asp:TableCell>
         <asp:TableCell>
        <asp:CheckBox ID="chklkgcomp" runat="server" Text="Computers" /><br /><asp:CheckBox ID="chklkgmultimedia" runat="server" Text="Multimedia" />
        </asp:TableCell>
         <asp:TableCell>
        <asp:TextBox ID="txtlkgfee" runat="server" Width="70px" BackColor="#D6D6D6" Enabled="false"></asp:TextBox>
        <asp:RegularExpressionValidator ID="RegularExpressionValidator2" runat="server" ErrorMessage="*" ControlToValidate="txtlkgfee" ValidationExpression="^([0-9])*$" ></asp:RegularExpressionValidator>            
        </asp:TableCell>
         <asp:TableCell>
           <asp:CheckBox ID="chklkgpapers" runat="server" />
        </asp:TableCell>
        
      </asp:TableRow>
      <asp:TableRow>    
        <asp:TableCell>
        <asp:Label ID="lblukg" runat="server" Text="U.K.G"></asp:Label>
        </asp:TableCell>
         <asp:TableCell>
        <asp:TextBox ID="txtukgstudents" runat="server" Width="70px" BackColor="#D6D6D6"></asp:TextBox>
        <asp:RegularExpressionValidator ID="RegularExpressionValidator3" runat="server" ErrorMessage="*" ControlToValidate="txtukgstudents" ValidationExpression="^([0-9])*$" ></asp:RegularExpressionValidator>            
        </asp:TableCell>
         <asp:TableCell>
        <asp:CheckBox ID="chkukgcomp" runat="server" Text="Computers" /><br /><asp:CheckBox ID="chkukgmultimedia" runat="server" Text="Multimedia" />
        </asp:TableCell>
         <asp:TableCell>
        <asp:TextBox ID="txtukgfee" runat="server" Width="70px" BackColor="#D6D6D6" Enabled="false"></asp:TextBox>
        <asp:RegularExpressionValidator ID="RegularExpressionValidator4" runat="server" ErrorMessage="*" ControlToValidate="txtukgfee" ValidationExpression="^([0-9])*$" ></asp:RegularExpressionValidator>            
        </asp:TableCell>
         <asp:TableCell>
           <asp:CheckBox ID="chkukgpapers" runat="server" />
        </asp:TableCell>
        
      </asp:TableRow>
      <asp:TableRow>    
        <asp:TableCell>
        <asp:Label ID="lbl1" runat="server" Text="1st_class"></asp:Label>
        </asp:TableCell>
         <asp:TableCell>
        <asp:TextBox ID="txt1students" runat="server" Width="70px" BackColor="#D6D6D6"></asp:TextBox>
        <asp:RegularExpressionValidator ID="RegularExpressionValidator5" runat="server" ErrorMessage="*" ControlToValidate="txt1students" ValidationExpression="^([0-9])*$" ></asp:RegularExpressionValidator>            
        </asp:TableCell>
         <asp:TableCell>
        <asp:CheckBox ID="chk1comp" runat="server" Text="Computers" /><br /><asp:CheckBox ID="chk1multimedia" runat="server" Text="Multimedia" />
        </asp:TableCell>
         <asp:TableCell>
        <asp:TextBox ID="txt1fee" runat="server" Width="70px" BackColor="#D6D6D6" Enabled="false"></asp:TextBox>
        <asp:RegularExpressionValidator ID="RegularExpressionValidator6" runat="server" ErrorMessage="*" ControlToValidate="txt1fee" ValidationExpression="^([0-9])*$" ></asp:RegularExpressionValidator>            
        </asp:TableCell>
         <asp:TableCell>
        <asp:CheckBox ID="chk1papers" runat="server" />
        </asp:TableCell>        
      </asp:TableRow>
     
      <asp:TableRow>    
        <asp:TableCell>
        <asp:Label ID="lbl2" runat="server" Text="2nd class"></asp:Label>
        </asp:TableCell>
         <asp:TableCell>
        <asp:TextBox ID="txt2students" runat="server" Width="70px" BackColor="#D6D6D6"></asp:TextBox>
        <asp:RegularExpressionValidator ID="RegularExpressionValidator7" runat="server" ErrorMessage="*" ControlToValidate="txt2students" ValidationExpression="^([0-9])*$" ></asp:RegularExpressionValidator>            
        </asp:TableCell>
         <asp:TableCell>
        <asp:CheckBox ID="chk2comp" runat="server" Text="Computers" /><br /><asp:CheckBox ID="chk2multimedia" runat="server" Text="Multimedia" />
        </asp:TableCell>
         <asp:TableCell>
        <asp:TextBox ID="txt2fee" runat="server" Width="70px" BackColor="#D6D6D6" Enabled="false"></asp:TextBox>
        <asp:RegularExpressionValidator ID="RegularExpressionValidator8" runat="server" ErrorMessage="*" ControlToValidate="txt2fee" ValidationExpression="^([0-9])*$" ></asp:RegularExpressionValidator>            
        </asp:TableCell>
         <asp:TableCell>
        <asp:CheckBox ID="chk2papers" runat="server" />
        </asp:TableCell>        
      </asp:TableRow>
     
      <asp:TableRow>    
        <asp:TableCell>
        <asp:Label ID="lbl3" runat="server" Text="3rd class"></asp:Label>
        </asp:TableCell>
         <asp:TableCell>
        <asp:TextBox ID="txt3students" runat="server" Width="70px" BackColor="#D6D6D6"></asp:TextBox>
        <asp:RegularExpressionValidator ID="RegularExpressionValidator9" runat="server" ErrorMessage="*" ControlToValidate="txt3students" ValidationExpression="^([0-9])*$" ></asp:RegularExpressionValidator>            
        </asp:TableCell>
         <asp:TableCell>
        <asp:CheckBox ID="chk3comp" runat="server" Text="Computers" /><br /><asp:CheckBox ID="chk3multimedia" runat="server" Text="Multimedia" />
        </asp:TableCell>
         <asp:TableCell>
        <asp:TextBox ID="txt3fee" runat="server" Width="70px" BackColor="#D6D6D6" Enabled="false"></asp:TextBox>
        <asp:RegularExpressionValidator ID="RegularExpressionValidator10" runat="server" ErrorMessage="*" ControlToValidate="txt3fee" ValidationExpression="^([0-9])*$" ></asp:RegularExpressionValidator>            
        </asp:TableCell>
         <asp:TableCell>
        <asp:CheckBox ID="chk3papers" runat="server"  />
        </asp:TableCell>        
      </asp:TableRow>
     
      <asp:TableRow>    
        <asp:TableCell>
        <asp:Label ID="lbl4" runat="server" Text="4th class"></asp:Label>
        </asp:TableCell>
         <asp:TableCell>
        <asp:TextBox ID="txt4students" runat="server" Width="70px" BackColor="#D6D6D6"></asp:TextBox>
        <asp:RegularExpressionValidator ID="RegularExpressionValidator11" runat="server" ErrorMessage="*" ControlToValidate="txt4students" ValidationExpression="^([0-9])*$" ></asp:RegularExpressionValidator>            
        </asp:TableCell>
         <asp:TableCell>
        <asp:CheckBox ID="chk4comp" runat="server" Text="Computers" /><br /><asp:CheckBox ID="chk4multimedia" runat="server" Text="Multimedia" />
        </asp:TableCell>
         <asp:TableCell>
        <asp:TextBox ID="txt4fee" runat="server" Width="70px" BackColor="#D6D6D6" Enabled="false"></asp:TextBox>
        <asp:RegularExpressionValidator ID="RegularExpressionValidator12" runat="server" ErrorMessage="*" ControlToValidate="txt4fee" ValidationExpression="^([0-9])*$" ></asp:RegularExpressionValidator>            
        </asp:TableCell>
         <asp:TableCell>
        <asp:CheckBox ID="chk4papers" runat="server" />
        </asp:TableCell>        
      </asp:TableRow>
     
      <asp:TableRow>    
        <asp:TableCell>
        <asp:Label ID="lbl5" runat="server" Text="5th class"></asp:Label>
        </asp:TableCell>
         <asp:TableCell>
        <asp:TextBox ID="txt5students" runat="server" Width="70px" BackColor="#D6D6D6"></asp:TextBox>
        <asp:RegularExpressionValidator ID="RegularExpressionValidator13" runat="server" ErrorMessage="*" ControlToValidate="txt5students" ValidationExpression="^([0-9])*$" ></asp:RegularExpressionValidator>            
        </asp:TableCell>
         <asp:TableCell>
        <asp:CheckBox ID="chk5comp" runat="server" Text="Computers" /><br /><asp:CheckBox ID="chk5multimedia" runat="server" Text="Multimedia" />
        </asp:TableCell>
         <asp:TableCell>
        <asp:TextBox ID="txt5fee" runat="server" Width="70px" BackColor="#D6D6D6" Enabled="false"></asp:TextBox>
        <asp:RegularExpressionValidator ID="RegularExpressionValidator14" runat="server" ErrorMessage="*" ControlToValidate="txt5fee" ValidationExpression="^([0-9])*$" ></asp:RegularExpressionValidator>            
        </asp:TableCell>
         <asp:TableCell>
        <asp:CheckBox ID="chk5papers" runat="server" />
        </asp:TableCell>        
      </asp:TableRow>
     
      <asp:TableRow>    
        <asp:TableCell>
        <asp:Label ID="lbl6" runat="server" Text="6th class"></asp:Label>
        </asp:TableCell>
         <asp:TableCell>
        <asp:TextBox ID="txt6students" runat="server" Width="70px" BackColor="#D6D6D6"></asp:TextBox>
        <asp:RegularExpressionValidator ID="RegularExpressionValidator15" runat="server" ErrorMessage="*" ControlToValidate="txt6students" ValidationExpression="^([0-9])*$" ></asp:RegularExpressionValidator>            
        </asp:TableCell>
         <asp:TableCell>
        <asp:CheckBox ID="chk6comp" runat="server" Text="Computers" /><br /><asp:CheckBox ID="chk6multimedia" runat="server" Text="Multimedia" />
        </asp:TableCell>
         <asp:TableCell>
        <asp:TextBox ID="txt6fee" runat="server" Width="70px" BackColor="#D6D6D6" Enabled="false"></asp:TextBox>
        <asp:RegularExpressionValidator ID="RegularExpressionValidator16" runat="server" ErrorMessage="*" ControlToValidate="txt6fee" ValidationExpression="^([0-9])*$" ></asp:RegularExpressionValidator>            
        </asp:TableCell>
         <asp:TableCell>
        <asp:CheckBox ID="chk6papers" runat="server" />
        </asp:TableCell>        
      </asp:TableRow>
     
      <asp:TableRow>    
        <asp:TableCell>
        <asp:Label ID="lbl7" runat="server" Text="7th class"></asp:Label>
        </asp:TableCell>
         <asp:TableCell>
        <asp:TextBox ID="txt7students" runat="server" Width="70px" BackColor="#D6D6D6"></asp:TextBox>
        <asp:RegularExpressionValidator ID="RegularExpressionValidator17" runat="server" ErrorMessage="*" ControlToValidate="txt7students" ValidationExpression="^([0-9])*$" ></asp:RegularExpressionValidator>            
        </asp:TableCell>
         <asp:TableCell>
        <asp:CheckBox ID="chk7comp" runat="server" Text="Computers" /><br /><asp:CheckBox ID="chk7multimedia" runat="server" Text="Multimedia" />
        </asp:TableCell>
         <asp:TableCell>
        <asp:TextBox ID="txt7fee" runat="server" Width="70px" BackColor="#D6D6D6" Enabled="false"></asp:TextBox>
        <asp:RegularExpressionValidator ID="RegularExpressionValidator18" runat="server" ErrorMessage="*" ControlToValidate="txt7fee" ValidationExpression="^([0-9])*$" ></asp:RegularExpressionValidator>            
        </asp:TableCell>
         <asp:TableCell>
        <asp:CheckBox ID="chk7papers" runat="server" />
        </asp:TableCell>        
      </asp:TableRow>
     
      <asp:TableRow>    
        <asp:TableCell>
        <asp:Label ID="lbl8" runat="server" Text="8th class"></asp:Label>
        </asp:TableCell>
         <asp:TableCell>
        <asp:TextBox ID="txt8students" runat="server" Width="70px" BackColor="#D6D6D6"></asp:TextBox>
        <asp:RegularExpressionValidator ID="RegularExpressionValidator19" runat="server" ErrorMessage="*" ControlToValidate="txt8students" ValidationExpression="^([0-9])*$" ></asp:RegularExpressionValidator>            
        </asp:TableCell>
         <asp:TableCell>
        <asp:CheckBox ID="chk8comp" runat="server" Text="Computers" /><br /><asp:CheckBox ID="chk8multimedia" runat="server" Text="Multimedia" />
        </asp:TableCell>
         <asp:TableCell>
        <asp:TextBox ID="txt8fee" runat="server" Width="70px" BackColor="#D6D6D6" Enabled="false"></asp:TextBox>
        <asp:RegularExpressionValidator ID="RegularExpressionValidator20" runat="server" ErrorMessage="*" ControlToValidate="txt8fee" ValidationExpression="^([0-9])*$" ></asp:RegularExpressionValidator>            
        </asp:TableCell>
         <asp:TableCell>
        <asp:CheckBox ID="chk8papers" runat="server" />
        </asp:TableCell>        
      </asp:TableRow>
     
      <asp:TableRow>    
        <asp:TableCell>
        <asp:Label ID="lbl9" runat="server" Text="9th class"></asp:Label>
        </asp:TableCell>
         <asp:TableCell>
        <asp:TextBox ID="txt9students" runat="server" Width="70px" BackColor="#D6D6D6"></asp:TextBox>
        <asp:RegularExpressionValidator ID="RegularExpressionValidator21" runat="server" ErrorMessage="*" ControlToValidate="txt9students" ValidationExpression="^([0-9])*$" ></asp:RegularExpressionValidator>            
        </asp:TableCell>
         <asp:TableCell>
        <asp:CheckBox ID="chk9comp" runat="server" Text="Computers" /><br /><asp:CheckBox ID="chk9multimedia" runat="server" Text="Multimedia" />
        </asp:TableCell>
         <asp:TableCell>
        <asp:TextBox ID="txt9fee" runat="server" Width="70px" BackColor="#D6D6D6" Enabled="false"></asp:TextBox>
        <asp:RegularExpressionValidator ID="RegularExpressionValidator22" runat="server" ErrorMessage="*" ControlToValidate="txt9fee" ValidationExpression="^([0-9])*$" ></asp:RegularExpressionValidator>            
        </asp:TableCell>
         <asp:TableCell>
        <asp:CheckBox ID="chk9papers" runat="server" />
        </asp:TableCell>        
      </asp:TableRow>
     
      <asp:TableRow>    
        <asp:TableCell>
        <asp:Label ID="lbl10" runat="server" Text="10th class"></asp:Label>
        </asp:TableCell>
         <asp:TableCell>
        <asp:TextBox ID="txt10students" runat="server" Width="70px" BackColor="#D6D6D6"></asp:TextBox>
        <asp:RegularExpressionValidator ID="RegularExpressionValidator23" runat="server" ErrorMessage="*" ControlToValidate="txt10students" ValidationExpression="^([0-9])*$" ></asp:RegularExpressionValidator>            
        </asp:TableCell>
         <asp:TableCell>
        <asp:CheckBox ID="chk10comp" runat="server" Text="Computers" /><br /><asp:CheckBox ID="chk10multimedia" runat="server" Text="Multimedia" />
        </asp:TableCell>
         <asp:TableCell>
        <asp:TextBox ID="txt10fee" runat="server" Width="70px" BackColor="#D6D6D6" Enabled="false"></asp:TextBox>
        <asp:RegularExpressionValidator ID="RegularExpressionValidator24" runat="server" ErrorMessage="*" ControlToValidate="txt10fee" ValidationExpression="^([0-9])*$" ></asp:RegularExpressionValidator>            
        </asp:TableCell>
         <asp:TableCell>
        <asp:CheckBox ID="chk10papers" runat="server" />
        </asp:TableCell>        
      </asp:TableRow>
     
     </asp:Table>
   
     <table border="0" cellpadding="0" cellspacing="0" width="50%">
      <tr>
       <td style="font-family:Verdana; font-size:12px; width: 131px; height: 28px;"></td>
       <td style="font-family:Verdana; font-size:12px; width: 131px; height: 28px;"></td>
       <td style="font-family:Verdana; font-size:12px; width: 131px; height: 28px;"><center><asp:Button ID="btnstrength" runat="server" Text="Save" BackColor="#D6D6D6" OnClick="btnstrength_Click" Enabled="false" /></center></td>
       <td style="font-family:Verdana; font-size:12px; width: 131px; height: 28px;"></td>
       <td style="font-family:Verdana; font-size:12px; width: 131px; height: 28px;"></td>
      </tr>   
     </table>


and in click event i wrote
protected void btnstrength_Click(object sender, EventArgs e)
    {

        ArrayList cells = new ArrayList();

        Table t = (Table)form1.FindControl("tblstudentstrength");

        foreach (TableRow r in t.Rows)
        {
            foreach (TableCell cell in r.Cells)
            {

                cells.Add(cell.ToString());

            }
        }
}
after this what i have to do