How can we get text box value which is built in gridview

Question

hello guys how r u ?

Q: my Question is that , how can i get the value of text box which i built in gridview through the item template field?

i was try like this but i did not get the value

                <asp:GridView ID="GridView1" runat="server" BackColor="#CCCCCC" 

                    BorderColor="#999999" BorderStyle="Solid" BorderWidth="3px" CellPadding="4" 

                    CellSpacing="2" ForeColor="Black" ShowFooter="True">

                    <RowStyle BackColor="White" />

                    <Columns>

                        <asp:TemplateField ShowHeader="False">

                            <ItemTemplate>

                                <asp:LinkButton ID="LinkButton1" runat="server" CausesValidation="False" 

                                    CommandName="Select" Text="Select"></asp:LinkButton>

                            </ItemTemplate>

                        </asp:TemplateField>

                        <asp:TemplateField HeaderText="Answer">

                            <FooterTemplate>

                                <asp:LinkButton ID="lbnSubmit" runat="server" onclick="lbnSubmit_Click">Submit</asp:LinkButton>

                            </FooterTemplate>

                            <ItemTemplate >

                                <asp:TextBox ID="txtAnswer" runat="server">Answer</asp:TextBox>

                            </ItemTemplate>

                        </asp:TemplateField>

                    </Columns>

                    <FooterStyle BackColor="#CCCCCC" />

                    <PagerStyle BackColor="#CCCCCC" ForeColor="Black" HorizontalAlign="Left" />

                    <SelectedRowStyle BackColor="#000099" Font-Bold="True" ForeColor="White" />

                    <HeaderStyle BackColor="Black" Font-Bold="True" ForeColor="White" />

                </asp:GridView>

        string data;

    protected void lbnSubmit_Click(object sender, EventArgs e)

    {

        foreach (GridViewRow gvr in GridView1.Rows)

        {

            data = gvr.Cells[1].Text;

        }

        Response.Write(data);

    }

reply soon please its urgent...