how to add new dinamically column in gridiview using parameter of textbox

See more:

ASP.NET

Gridview

this is my design :
Column Name / Header Id = textbox1

Column Text / Header Text = textbox2

Column size = textbox3

i have a gridview, how to add new column using templatefield header = input from textbox1, templatefield id= input from textbox1, and template field width = input from textbox 3.

this is my code aspx :

<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False"
       ShowFooter="True" CellPadding="4" ForeColor="#333333"
       Width="732px" Height="16px" AllowSorting="True"
           PageSize="20" AllowPaging="True">
           <Columns>
            <asp:TemplateField HeaderText="Report Id" Visible="False">
                                  <ItemTemplate>
                                         <asp:Label ID="lblreport_id" Width = "20px" runat="server" ForeColor="Black"
                                             Text='<%# Eval("report_id") %>'></asp:Label>
                                     </ItemTemplate>
                                     <FooterTemplate>
                               <asp:TextBox ID="txtreport_id"  Width = "20px" runat="server"></asp:TextBox>
                                      </FooterTemplate>
                                       <ControlStyle Width="20px" />
                                       <HeaderStyle ForeColor="White" />
                                          <ItemStyle Width="20px" />
                                 </asp:TemplateField>

your answer is very helpful, thanks :)