Add Textboxes Dynamically and get the values

Hello Friends,
      Sometimes we need to add the textboxes dynamically and get the values from that.

first add the code at design side.

<ul>
     <li class="websiteadd">
                        <label for="user_category">
                            Websites^*</label>
                        <div class="inputbox" style="width: 320px; height: 28px;">
                            <asp:TextBox ID="txtWebSite" MaxLength="50" Style="height: 28px; width:210px;" runat="server"
                                CssClass="input-text wid text txtWebSite addwebsite"></asp:TextBox>
                            <asp:Button CssClass="add-btn" ID="btnAddnewWebsite" OnClientClick="return fnAddCustomWebsite();"
                                runat="server" Text="+Add" />
                        </div>
                    </li>
                    <li class="websitedelete">
                        <asp:Panel ID="panelWebSite" CssClass="panelWebSite" runat="server" Style="margin-left: 131px;">
                        </asp:Panel>
                    </li>
                </ul>

Then add the script in the head part

<script type="text/javascript">
function fnAddCustomWebsite() {
            var web = $(".addwebsite").val();
            var re = /^(www\.)[A-Za-z0-9_-]+\.+[A-Za-z0-9.\/%&=\?_:;-]+$/;
            if (!re.test(web)) {
                alert("Please Enter valid website name.");
                return false;
            }
            else {
                AddWeb++;
                var li_Web = $("<span></span>").append($("<div style='width: 320px; height:28px;'></div>").addClass("field-wrapper inputbox").append($("<input style='width: 220px; height:28px;' />").attr({ "id": "txtnewAddWeb" + AddWeb, "text": +web, "name": "txtnewAddWeb" + AddWeb }).val(web))
            .append($("<a></a>").attr({ "href": "javascript:void(0);", "class": "delete-amt", "style": "width:50px;" }).append("Delete").click(function () {
                $(this).parent().remove();
                return false;
            })));
                $(".panelWebSite").append($(li_Web));
                $(".addwebsite").val('');
                return false;
            }
        }
</script>

Then create the method to get the values as follows

public void AddWebSites()
        {
            try
            {
                UserWebsiteService objuserwebsiteservice = new UserWebsiteService();
               
                foreach (string key in Request.Params.AllKeys)
                {
                    if (key.Contains("txtnewAddWeb"))
                    {
                        string lblnewweb = Request.Params[key].ToString();
                        GEN_UserWebSite objNewWeb = new GEN_UserWebSite();
                        objNewWeb.CreatedBy = ProjectSession.UserID;
                        objNewWeb.CreatedDate = DateTime.Now;
                        objNewWeb.WebSiteName = lblnewweb.Trim();
                        objNewWeb.UserID = ProjectSession.UserID;
                        objuserwebsiteservice.InsertGEN_UserWebSite(objNewWeb);
                       
                    }
                }
            }
            catch (Exception ex)
            {
                ErrHandler.WriteError(ex);
            }
        }

Now call this function on submit button.