access control in grid view and store their values into database

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C#

DataGridView

i have an query please ans me as fast as posible i need urgently
i have a grid view which contains some controls like radio button and text box. i want to save these details to their corresponding id of student in table attendance
i want to store the attendance detail of the student
html code is
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<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False"
BackColor="White" BorderColor="‪#‎CCCCCC‬" BorderStyle="None" BorderWidth="1px"
CellPadding="4" ForeColor="Black" GridLines="Horizontal">
<columns><asp:BoundField HeaderText="STUDENT ID" DataField="stud_id" >
<itemstyle horizontalalign="Center" verticalalign="Middle">

<asp:BoundField HeaderText="STUDENT NAME" DataField="stud_name" >
<itemstyle horizontalalign="Left">

<asp:TemplateField HeaderText="ATTENDANCE">
<itemtemplate>
<asp:RadioButton ID="rb_present" runat="server" Text="Present" GroupName="a" Checked="true"/>
<asp:RadioButton ID="rb_absent" runat="server" Text="Absent" GroupName="a"/>
<asp:RadioButton ID="rb_leave" runat="server" Text="Leave" GroupName="a"/>

<itemstyle width="200px">

<asp:TemplateField HeaderText="REMARK">
<itemtemplate>
<asp:TextBox ID="txt_remark" runat="server" >

<itemstyle horizontalalign="Center" verticalalign="Middle">

<footerstyle backcolor="‪#‎CCCC99‬" forecolor="Black">
<pagerstyle backcolor="White" forecolor="Black" horizontalalign="Right">
<SelectedRowStyle BackColor="‪#‎CC3333‬" Font-Bold="True" ForeColor="White" />
<HeaderStyle BackColor="#333333" Font-Bold="True" Font-Names="Calibri"
ForeColor="White" />

==========================================================
table structure is :
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student id : int
course :nvarchar(50)
sem:nvarchar(50)
subject:nvarchar(50)
period:nvarchar(50)
status:nvarchar(50) // it contains the present absent and leave details in text or int format what ever u wish
remark :nvarchar(50)
date:nvarchar(50)
==========================================================
i need c# code for this.
please give solution for this it too urgent
waiting for all your feedback
sender: Prasunjeet Soni
prasunjeet.soni04@rediffmail.com