How to add new panel under selected GridviewRow on clicking Linkbutton.?

See more:

ASP.NET

Gridview

DynamicMethod

I m having a gridview with simple student information.
This gridview having a column of link button which generates Grid_rowcommand method().
But when I click on that link button, i need to have a row right under the selected row only with Textbox in which i can write some text and can send this reply as email to perticaular student.

<asp:GridView ID="grdSuggestion" runat="server" AutoGenerateColumns="false" DataKeyNames=""
                    AllowPaging="True" PageSize="10" Width="100%"
                    onrowdatabound="grdSuggestion_RowDataBound"
                    onrowcommand="grdSuggestion_RowCommand" >
                    <HeaderStyle HorizontalAlign="Center" CssClass="GridHeaderClass" />
                    <PagerStyle BackColor="#3B5998" ForeColor="White" HorizontalAlign="Center" />
                    <RowStyle HorizontalAlign="Left" CssClass="GridRowClass" />
                    <EditRowStyle BackColor="#999999" />
                    <AlternatingRowStyle CssClass="GridalternetRowClass" ForeColor="#284775" />
                    <FooterStyle CssClass="GridFooterClass" />
                    <Columns>

                        <asp:TemplateField HeaderText="Faculty" ItemStyle-Width="10%">
                            <ItemTemplate>
                                <asp:Label ID="lblfaculty" runat="server" Text='<%# Eval("faculty") %>'></asp:Label>
                            </ItemTemplate>
                        </asp:TemplateField>
                        <asp:TemplateField HeaderText="Time" ItemStyle-Width="10%">
                            <ItemTemplate>
                                <asp:Label ID="lbltime" runat="server" Text='<%# Eval("time") %>'></asp:Label>
                            </ItemTemplate>
                        </asp:TemplateField>
                        <asp:TemplateField HeaderText="Course" ItemStyle-Width="15%">
                            <ItemTemplate>
                                <asp:Label ID="lblcourse" runat="server" Text='<%# Eval("coursename") %>'></asp:Label>
                            </ItemTemplate>
                        </asp:TemplateField>
                        <asp:TemplateField HeaderText="Student" ItemStyle-Width="12%">
                            <ItemTemplate>
                                <asp:Label ID="lblStudname" runat="server" Text='<%# Eval("name") %>'></asp:Label>
                            </ItemTemplate>
                        </asp:TemplateField>
<asp:TemplateField HeaderText="Solution" ItemStyle-Width="15%">
                            <ItemTemplate>
                              <asp:LinkButton ID="lnkReply" runat="server" Text="Reply" CommandName="Reply"></asp:LinkButton>
                            </ItemTemplate>
                        </asp:TemplateField>

coding side :

protected void grdSuggestion_RowCommand(object sender, GridViewCommandEventArgs e)
   {
       GridViewRow gvRow = (GridViewRow)(((LinkButton)e.CommandSource).NamingContainer);
       int RowIndex = gvRow.RowIndex;
       if (e.CommandName == "Reply")
       {
           ///Need Code Here to show Dynamic data panel
       }
   }