I want to add a gridview new row in client side .

this is my code,

                            <asp:RadioButtonList ID="rdbSkil" runat="server" RepeatDirection="Horizontal">
                             <asp:ListItem Text="1" Value="1"></asp:ListItem>
                                <asp:ListItem Text="2" Value="2"></asp:ListItem>
                                     <asp:ListItem Text="3" Value="3"></asp:ListItem>
                                                      <asp:ListItem Text="4" Value="4"></asp:ListItem>
                              <asp:ListItem Text="5" Value="5"></asp:ListItem>
                             </asp:RadioButtonList>
                                                         </ItemTemplate>
                            <FooterStyle HorizontalAlign="Right" />
                            <FooterTemplate>
                                <asp:Button ID="btnrow" runat="server" OnClick="btnrow_Click" 
                                    Text="Add Skills" />
                            </FooterTemplate>
                        </asp:TemplateField>
                    </Columns>
                    <FooterStyle BackColor="White" ForeColor="#000066" />
                    <HeaderStyle BackColor="#006699" Font-Bold="True" ForeColor="White" />
                    <PagerStyle BackColor="White" ForeColor="#000066" HorizontalAlign="Left" />
                    <RowStyle ForeColor="#000066" />
                    <SelectedRowStyle BackColor="#669999" Font-Bold="True" ForeColor="White" />
                    <SortedAscendingCellStyle BackColor="#F1F1F1" />
                    <SortedAscendingHeaderStyle BackColor="#007DBB" />
                    <SortedDescendingCellStyle BackColor="#CAC9C9" />
                    <SortedDescendingHeaderStyle BackColor="#00547E" />
                </asp:GridView>