Repeat set of Codes again and again when a button is clicked - asp.net

Question

I'm learning to develop a webform. I want to run set of codes again when button is clicked. Can anyone please help me. asp IDs should also be changed for new items. As an example ID="itemCode1" should changed to itemCode2 in the second instance in 3rd itemcode 3 and so on. It is better if the button is moved to last row after clicking
<div class="form-group col-md-2">
<label>Item Code</label>
<div class="form-group">
<asp:TextBox Cssclass="form-control" ID="Itemcode1" runat="server" placeholder="Enter Item Code" ></asp:TextBox>
</div>
</div>
<div class="form-group col-md-2">
<label>Item Name</label>
<div class="form-group">
<asp:TextBox Cssclass="form-control" ID="ItemName" runat="server" placeholder="Enter Item Name" ></asp:TextBox>
</div>
</div>
<div class="form-group col-md-2">
<label>Select The Range</label>
<asp:CheckBoxList ID="CheckBoxList1" TabIndex="2" CssClass="rangecheckbox" RepeatDirection="Vertical" runat="server">
<asp:ListItem Text="Casabalanca (X05)" Value="Casabalanca (X05)"></asp:ListItem>
<asp:ListItem Text="Monaco (X07)" Value="Monaco (X07)"></asp:ListItem>
<asp:ListItem Text="Akoya" Value="Akoya"></asp:ListItem>
<asp:ListItem Text="Scintilla" Value="Scintilla"></asp:ListItem>
<asp:ListItem Text="Enigma" Value="Enigma"></asp:ListItem>
<asp:ListItem Text="BigRocker" Value="BigRocker"></asp:ListItem>
</asp:CheckBoxList>
</div>
<div class="form-group col-md-1">
<label>No Of Cavities</label>
<div class="form-group">
<asp:TextBox Cssclass="form-control" ID="NoOfCavities" runat="server" placeholder="Enter No of Cavities" ></asp:TextBox>
</div>
</div>
<div class="form-group col-md-2">
<label>Add the photo</label>
<div class="form-group">
<asp:FileUpload Cssclass="form-control" ID="ItemPhoto" type="submit" runat="server" text="Upload Photo" ></asp:FileUpload>
</div>
</div>
<div class="form-group col-md-1">
<label>Material</label>
<div class="form-group">
<asp:DropDownList ID="DropDownList1" Cssclass="form-control" runat="server">
<asp:ListItem text="Select" value="Select" />
<asp:ListItem text="PC" value="PC" />
<asp:ListItem text="Nylon6" value="Nylon6" />
<asp:ListItem text="HIPS" value="HIPS" />
<asp:ListItem text="PBT" value="PBT" />
<asp:ListItem text="ABS" value="ABS" />
<asp:ListItem text="Nylon Fiberfilled" value="Nylon Fiberfilled" />
</asp:DropDownList>
</div>
</div>
<div class="form-group col-md-1">
<asp:Button class="btn btn-primary btn-block" ID="AddAnotherItem" runat="server" Text="AddAnother" />
</div>
</div>
</div>