textboxvalue in postback is gone

Question

HI ive got the following error. ive got a aspx page. with some controls. wich can be filled in. However on my postback the value of a forwardToNewPhoneNumberTextBox is gone. so nog it crashes on the regularExpressionValidator.

 

How can i fix this ??

<%@ Control Language="C#" AutoEventWireup="true" CodeBehind="CallForwardingNotAvailableControl.ascx.cs" Inherits="OneXS.Orion.FrontOffice.Compleet.Portal.Controls.CallForwardingNotAvailableControl" %>
<asp:UpdatePanel ID="CallForwardingNotAvailableUpdatePanel" runat="server" UpdateMode="Conditional">
    <ContentTemplate>
        <%--eror row--%>
        <div class="row error">
            <asp:Panel runat="server" ID="FailureTextPanel" Visible="False" class="submit-summary error-summary">
                <asp:Literal ID="FailureTextLiteral" runat="server" />
            </asp:Panel>
        </div>
        <%--tekst--%>
        <div class="row">
            <div class="part fourth">
                <asp:Label ID="isActivatedLabel" runat="server" AssociatedControlID="CallForwardingNotAvailableOption"
                    CssClass="label-xl">Doorschakelen niet bereikbaar</asp:Label>
            </div>
            <%--switch om "Doorschakelen" waarde weer te geven--%>
            <div class="part sixth switch last">
                <asp:RadioButtonList ID="CallForwardingNotAvailableOption" runat="server" CssClass="optionOnOff" RepeatLayout="Flow"
                    RepeatColumns="3">
                    <asp:ListItem Value="Off" class="switch-off" Text=" "> </asp:ListItem>
                    <asp:ListItem Value="On" class="switch-on" Text=" "> </asp:ListItem>
                </asp:RadioButtonList>
            </div>
            <div class="part third last">
                <asp:Panel ID="ForwardToPanel" runat="server" Visible="false" DefaultButton="forwardToPhoneNumberEditLinkButton">
                    <asp:Label ID="forwardToPhoneNumberLabel" Width="50px" runat="server" AssociatedControlID="forwardToPhoneNumberTextBox"
                        CssClass="label-xs">Naar :</asp:Label>
                    <asp:TextBox ID="forwardToPhoneNumberTextBox" runat="server" ReadOnly="true"></asp:TextBox>
                    <asp:Button ID="forwardToPhoneNumberEditLinkButton" runat="server" CausesValidation="false"
                        OnClick="CallForwardingNotAvailablePhoneNumberEdit_Click" CssClass="button-s" Text="wijzig" />
                    <asp:Button ID="forwardToPhoneNumberSaveLinkButton" runat="server" OnClick="CallForwardingNotAvailableSave_Click"
                        Visible="false" CssClass="button-s" Text="opslaan" />
                </asp:Panel>
            </div>
        </div>
        <div class="row">
            <div id="CallForwardingNotAvailableDialog" title="Waar wilt u naar doorschakelen bij niet bereikbaar?">
                <asp:Panel ID="CallForwardingNotAvailableDialogPanel" runat="server">
                    <asp:Panel runat="server" ID="dialogFailureTextPanel" Visible="False" class="submit-summary error-summary">
                        <asp:Literal ID="dialogFailureTextLiteral" runat="server" />
                    </asp:Panel>
                    <asp:Label ID="forwardToNewPhoneNumberLabel" runat="server" CssClass="label-s" AssociatedControlID="forwardToNewPhoneNumberTextBox">Naar:</asp:Label>
                    <asp:TextBox ID="forwardToNewPhoneNumberTextBox" runat="server" CssClass="input-xxl"></asp:TextBox>
                    <asp:RequiredFieldValidator ID="forwardToNewPhoneNumberTextBoxRequiredFieldValidator"
                        runat="server" ControlToValidate="forwardToNewPhoneNumberTextBox" ErrorMessage="*"
                        ForeColor="Red" BorderColor="Red" SetFocusOnError="true" CssClass="error-span"
                        ValidationGroup="ForwardingNotReachableValidationGroup" />
                    <asp:RegularExpressionValidator ID="forwardToNewPhoneNumberRegularExpressionValidator"
                        ErrorMessage="*" runat="server" ControlToValidate="forwardToNewPhoneNumberTextBox"
                        ValidationGroup="ForwardingNotReachableValidationGroup"></asp:RegularExpressionValidator>
                </asp:Panel>
            </div>
            <asp:Button ID="CallForwardingNotAvailableButton" runat="server" UseSubmitBehavior="false"
                ValidationGroup="callForwardingAlwaysValidationGroup" OnClick="CallForwardingNotAvailableSave_Click"
                Style="display: none;" />
        </div>
    </ContentTemplate>
    <Triggers>
        <asp:AsyncPostBackTrigger ControlID="CallForwardingNotAvailableButton" EventName="Click" />
        <asp:AsyncPostBackTrigger ControlID="forwardToPhoneNumberEditLinkButton" EventName="Click" />
        <asp:AsyncPostBackTrigger ControlID="forwardToPhoneNumberSaveLinkButton" EventName="Click" />
    </Triggers>
</asp:UpdatePanel>

<script type="text/javascript">
    $(document).ready(function () {

        ApplyJQueryUIInControl();
        Sys.WebForms.PageRequestManager.getInstance().add_endRequest(EndRequestHandler);

        function EndRequestHandler(sender, args) {
            //ApplyJQueryUIInControl();
        }

        function ApplyJQueryUIInControl() {

            $("#<%= CallForwardingNotAvailableOption.ClientID %>").buttonset();

            $("#CallForwardingNotAvailableDialog").dialog({
                resizable: false,
                modal: true,
                autoOpen: false,
                show: "fade",
                closeOnEscape: false,
                hide: "fade",
                buttons: {
                    "> Ok": function () {
                        $("#<%= CallForwardingNotAvailableButton.ClientID %>").click();
                    },
                    "> Annuleren": function () {
                        $("#<%= CallForwardingNotAvailableOption.ClientID %>_0").attr("checked", "checked");
                        $("#<%= CallForwardingNotAvailableOption.ClientID %>").buttonset("refresh");
                        $(this).dialog("close");
                    }
                }
            });

        }
            <% if (string.IsNullOrEmpty(forwardToPhoneNumberTextBox.Text))
    {%>

<%--        $('#CallForwardingNotAvailableDialog').keypress(function (e) {
                if (e.keyCode === $.ui.keyCode.ENTER) {
                    $("#<%= CallForwardingNotAvailableButton.ClientID %>").click();
                    }
            });--%>

        //$("#CallForwardingNotAvailableDialog").parent().appendTo($("#<%= CallForwardingNotAvailableUpdatePanel.ClientID %>:first"));

        $("#<%= CallForwardingNotAvailableOption.ClientID %>").on("click", function (e) {

            e.preventDefault();  // this needed to be done otherwise the event is fired twice

            // check if option is 'Off'
            var list = document.getElementById("<%= CallForwardingNotAvailableOption.ClientID %>"); //Client ID of the radiolist
            var inputs = list.getElementsByTagName("input");
            var selected;
            for (var i = 0; i < inputs.length; i++) {
                if (inputs[i].checked) {
                    selected = inputs[i];
                    break;
                }
            }

            // radio option is selected
            if (selected) {
                // remove later
                var selectedValue = selected.value;
                if (selectedValue === "Off") {
                    // show dialog
                    $("#CallForwardingNotAvailableDialog").dialog("open");
                    $("#<%= forwardToNewPhoneNumberTextBox.ClientID %>").focus();
                } else {
                    // trigger click event
                    $("#<%= CallForwardingNotAvailableButton.ClientID %>").click();
                }
            }

            });
        <% } %>
    });
</script>

 code behind:

 

using System;
using System.Web;
using OneXS.Orion.BackOffice.Technic.ServiceAgent.Model;
using OneXS.Orion.Framework;
using OneXS.Orion.FrontOffice.Compleet.BusinessLogic;
using OneXS.Orion.FrontOffice.Compleet.Service;

namespace OneXS.Orion.FrontOffice.Compleet.Portal.Controls
{
    public partial class CallForwardingNotAvailableControl : CompleetControl
    {
        private static Guid _requestId;
        private Guid _sessionId;
        public string jSessionId;
        public User currentUser;
        public Features Features { get; set; }

        protected void Page_Load(object sender, EventArgs e)
        {
            _sessionId = Guid.Parse(HttpContext.Current.Session["BWSESSION"].ToString());
            _requestId = Guid.NewGuid();
            jSessionId = PortalApplication.User.jSessionId;

            try
            {
                //TODO: ik moet nog kijken hoe ik mezelf een een feature kan geven.
                if (PortalApplication == null || currentUser == null || Features.CallForwardingNotAvailable)
                    return;

                // if it is no postback set the radiobutton
                if (!IsPostBack)
                {
                    SetNumberNotAvalaibleSwitch();
                }

                forwardToNewPhoneNumberTextBoxRequiredFieldValidator.Enabled = true;
                forwardToNewPhoneNumberRegularExpressionValidator.ValidationExpression = ValidatorConstants.INTEGER_REGEX;
                forwardToNewPhoneNumberRegularExpressionValidator.ErrorMessage = ValidatorConstants.INTEGER_MESSAGE;
                forwardToNewPhoneNumberRegularExpressionValidator.Text = ValidatorConstants.INTEGER_MESSAGE;
            }
            catch (Exception ex)
            {
                PortalApplication.HandleException(ex);
                showFailureText();
            }
        }

        protected void CallForwardingNotAvailablePhoneNumberEdit_Click(object sender, EventArgs e)
        {
            CallForwardingNotAvailableDialogPanel.Visible = true;
            ForwardToPanel.Visible = false;
        }

        protected void CallForwardingNotAvailableSave_Click(object sender, EventArgs e)
        {
            try
            {
                // get the selected value
                var optionIsTurnedOff = CallForwardingNotAvailableOption.SelectedIndex == 0;

                if (optionIsTurnedOff)
                {
                    var test = forwardToNewPhoneNumberTextBox.Text;// empty somehow

                    // value is set to 'Off'...turn on
                    // validate everything
                    var submitError = CompleetApplication.Validate(Page, "ForwardingNotReachableValidationGroup");  // here it keeps crashing because the value of the postback is null
                    if (!string.IsNullOrEmpty(submitError))
                        return;

                    // check if textbox isn't empty
                    if (forwardToNewPhoneNumberTextBox.Visible && string.IsNullOrEmpty(forwardToNewPhoneNumberTextBox.Text))
                    {
                        showFailureText("Telefoonnummer is verplicht");
                        return;
                    }

                    //Get the trimmed phonenumber
                    var phonenumber = forwardToNewPhoneNumberTextBox.Text;
                    char[] charsToTrim = { ' ', '\t' };
                    phonenumber = phonenumber.Trim(charsToTrim);

                    //Get userId
                    var userId = Request.QueryString["userId"];
                    var isActive = CallForwardingNotAvailableOption.SelectedIndex == 1;

                    var callForwardingNotReachableMessage = CallForwardingNotAvailableOption.SelectedIndex == 1
                        ? NumberLogic.UserCallForwardingNotReachableModify(_requestId, _sessionId, jSessionId, userId,
                            phonenumber, isActive)
                        : NumberLogic.UserCallForwardingNotReachableModify(_requestId, _sessionId, jSessionId, userId,
                            null, false);

                    if (callForwardingNotReachableMessage.errorCode != 0 ||
                        !string.IsNullOrEmpty(callForwardingNotReachableMessage.errorMessage))
                    {
                        showFailureText();
                    }
                    else
                    {
                        //set visiblilty dialogpanel to false and set the ForwardToPanel visibility on true
                        CallForwardingNotAvailableDialogPanel.Visible = false;
                        ForwardToPanel.Visible = true;

                        // set values to textbox etc
                        forwardToPhoneNumberTextBox.Text = phonenumber;
                    }
                }
                else
                {
                    // value is set to 'On'...turn off
                    var userId = Request.QueryString["userId"];
                    NumberLogic.UserCallForwardingNotReachableModify(_requestId, _sessionId, jSessionId, userId, string.Empty, false);
                }
            }
            catch (Exception ex)
            {
                PortalApplication.HandleException(ex);
                showFailureText();
            }
        }

        private void showFailureText(string failureText = "Er is iets fout gegaan tijdens het uitvoeren van uw opdracht.")
        {
            FailureTextLiteral.Text = failureText;
            FailureTextPanel.Visible = true;
            PortalApplication.EndRequest();
        }

        protected void CallForwardingNotAvailableOption_SelectedIndexChanged(object sender, EventArgs e)
        {
            //Set visisbility based on coditions
            var isActivated = CallForwardingNotAvailableOption.SelectedIndex == 1;
            CallForwardingNotAvailableDialogPanel.Visible = isActivated;

            // check if it is active or not, if so.. deactivate
            if (isActivated) return;

            var userId = Request.QueryString["userId"];
            NumberLogic.UserCallForwardingNotReachableModify(_requestId, _sessionId, jSessionId, userId, string.Empty, false);
        }

        private void SetNumberNotAvalaibleSwitch()
        {
            // Create the request to get the value of the radiobuttonlist from technic service
            var userId = Request.QueryString["userId"];
            var callForwardingNotReachableMessage = NumberLogic.GetUserCallForwardingNotReachable(_requestId, _sessionId, jSessionId, userId);
            var errorCode = callForwardingNotReachableMessage.errorCode;
            var errorMessage = callForwardingNotReachableMessage.errorMessage;
            if (errorCode != 0 || !string.IsNullOrEmpty(errorMessage))
            {
                showFailureText();
            }

            // Set the response to the radioButton
            CallForwardingNotAvailableOption.SelectedIndex = Convert.ToInt32(callForwardingNotReachableMessage.callForwardingNotReachable.isActive);
        }
    }
}