Group RadioButtons inside GridView Row based on data in ASP.Net

Here I have created sample that will help you out.

HTML

<div>
    <script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.7.2/jquery.min.js"></script>
    <script type="text/javascript">
        function RadioCheck(rb) {
            var gv = document.getElementById("<%=GridView1.ClientID%>");
            var rbs = gv.getElementsByTagName("input");
            var row = rb.parentNode.parentNode;
            var types = gv.getElementsByTagName("span");
            var type = row.getElementsByTagName("span");
            for (var i = 0; i < rbs.length; i++) {
                if (type[0].innerHTML == types[i].innerHTML) {
                    if (rbs[i].type == "radio") {
                        if (rbs[i].checked && rbs[i] != rb && types[i] != type) {
                            rbs[i].checked = false;
                            break;
                        }
                    }
                }
            }
        }
    </script>
    <asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="false" Font-Names="Arial"
        Font-Size="11pt" AllowPaging="false" PageSize="3">
        <Columns>
            <asp:BoundField DataField="Id" HeaderText="Id" ItemStyle-Width="150" />
            <asp:BoundField DataField="Name" HeaderText="Name" ItemStyle-Width="150" />
            <asp:BoundField DataField="Country" HeaderText="Country" ItemStyle-Width="150" />
            <asp:TemplateField>
                <ItemTemplate>
                    <asp:RadioButton ID="RadioButton1" runat="server" onclick="RadioCheck(this);" />
                    <%--<input id="hfType" type="hidden" value='<%#Eval("Type") %>' />--%>
                    <asp:Label ID="lblType" Text='<%#Eval("Type") %>' runat="server" Style="display: none" />
                </ItemTemplate>
            </asp:TemplateField>
        </Columns>
    </asp:GridView>
    <asp:Button Text="Submit" runat="server" OnClick="btn_Submit_Click" />
</div>

Code

protected void Page_Load(object sender, EventArgs e)
{
    if (!this.IsPostBack)
    {
        DataTable dt = new DataTable();
        dt.Columns.AddRange(new DataColumn[4] { new DataColumn("Id", typeof(int)),
                new DataColumn("Name", typeof(string)),
                new DataColumn("Country",typeof(string)),new DataColumn("Type",typeof(string)) });

        dt.Rows.Add(1, "David", "UK", "0");
        dt.Rows.Add(2, "Jhon", "USA", "0");
        dt.Rows.Add(3, "Kevin", "USA", "0");
        dt.Rows.Add(4, "Peter", "UK", "1");
        dt.Rows.Add(5, "Andrea", "USA", "1");
        dt.Rows.Add(6, "Anabell", "UAE", "2");

        GridView1.DataSource = dt;
        GridView1.DataBind();
    }
}

protected void btn_Submit_Click(object sender, EventArgs e)
{
    foreach (GridViewRow GVR in GridView1.Rows)
    {
        RadioButton RadioButton1 = (RadioButton)GridView1.Rows[GVR.RowIndex].FindControl("RadioButton1");
        if (RadioButton1.Checked == true)
        {
            string ID = GridView1.Rows[GVR.RowIndex].Cells[0].Text;
            string Type = ((Label)GridView1.Rows[GVR.RowIndex].FindControl("lblType")).Text;
        }
    }
}

In below screenshot you can see,first three records are type of 0 and next two records are type of 1 and last record is type of 2,hence we can select only one radiobutton of first three records and so on.

Screenshot