asp:TextBox is not working inside asp:Placeholder C#

I am trying to add some TextBoxes controls dynamically based on items in my database. This is my asp:PlaceHolder in .aspx page

 <asp:PlaceHolder ID="PlaceHolderHTML" runat="server"></asp:PlaceHolder>

and now from C# code I am trying to create dynamic HTML and then that html render to asp:PlaceHolder.

This is my C# code:

 StringBuilder data = new StringBuilder();
 foreach (SPListItem item in collitem)
 {
 data.Append(@"
      <tr>
          <th class='accordionSection esEmplCardSectionHeader'>
                <span id='lblSectionName'>
                    <asp:TextBox ID='TextBox" + item["ID"].ToString() + @"' runat='server'></asp:TextBox>
                </span>
          </th>             
      </tr>         
 }

 PlaceHolderHTML.Controls.Add(new Literal { Text = data.ToString() });

but in browser the TextBox controls are not being shown. When I inpect element the textbox I am seeing the following result:

So the textbox inside html that is being sent to asp:PlaceHolder, browser is not knowing it as asp control and in the browser nothing is being shown, so how to solve this problem?