We_Relese/App/Relese/Views/Account/_TenantChangeModal.cshtml

@using WeApp.Views.Shared.Modals
@using IwbZero.MultiTenancy
@Html.Partial("/Modals/_ModalHeader", new ModalHeaderViewModel(L("ChangeTenant"),""))
<div class="modal-body">
    <form name="TenantChangeForm" role="form" novalidate class="form-validation">
        <div class="form-group form-float">
            <div class="form-line">
                <input class="form-control" type="text" name="TenancyName" maxlength="@TenantBase.MaxTenancyNameLength" value="@Model.TenancyName">
                <label class="form-label">@L("TenancyName")</label>
            </div>
        </div>
        <span class="help-block">@L("LeaveEmptyToSwitchToHost")</span>
    </form>
</div>

@Html.Partial("Modals/_ModalFooter")

<script type="text/javascript">
    (function ($) {
       // var _accountService = abp.services.app.account;

        var $form = $('form[name=TenantChangeForm]');

        function switchToSelectedTenant() {

            var tenancyName = $form.find('input[name=TenancyName]').val();

            if (!tenancyName) {
                abp.multiTenancy.setTenantIdCookie(null);
                location.reload();
                return;
            }
            $.iwbAjax4({
                url: abp.appUrl + '',
                success: function(result) {
                    switch (result.state) {
                    case 1: //Available
                        abp.multiTenancy.setTenantIdCookie(result.tenantId);
                        //_modalManager.close();
                        location.reload();
                        return;
                    case 2: //InActive
                        abp.message.warn(abp.utils.formatString(abp.localization
                            .localize("TenantIsNotActive", "WeApp"),
                            tenancyName));
                        break;
                    case 3: //NotFound
                        abp.message.warn(abp.utils.formatString(abp.localization
                            .localize("ThereIsNoTenantDefinedWithName{0}", "WeApp"),
                            tenancyName));
                        break;
                    }
                }
            });
            //_accountService.isTenantAvailable({
            //    tenancyName: tenancyName
            //}).done(function (result) {
            //    switch (result.state) {
            //    case 1: //Available
            //        abp.multiTenancy.setTenantIdCookie(result.tenantId);
            //        //_modalManager.close();
            //        location.reload();
            //        return;
            //    case 2: //InActive
            //        abp.message.warn(abp.utils.formatString(abp.localization
            //            .localize("TenantIsNotActive", "WeApp"),
            //            tenancyName));
            //        break;
            //    case 3: //NotFound
            //        abp.message.warn(abp.utils.formatString(abp.localization
            //            .localize("ThereIsNoTenantDefinedWithName{0}", "WeApp"),
            //            tenancyName));
            //        break;
            //    }
            //});
        }

        //Handle save button click
        $form.closest('div.modal-content').find(".save-button").click(function (e) {
            e.preventDefault();
            switchToSelectedTenant();
        });

        //Handle enter key
        $form.find('input').on('keypress', function (e) {
            if (e.which === 13) {
                e.preventDefault();
                switchToSelectedTenant();
            }
        });

        $.AdminBSB.input.activate($form);

        $('#TenantChangeModal').on('shown.bs.modal', function () {
            $form.find('input[type=text]:first').focus();
        });
    })(jQuery);

</script>