Hide the Add button if the widget is not defined

modules/cms-kit/src/Volo.CmsKit.Admin.Web/Pages/CmsKit/Contents/AddWidgetModal.cshtml

@@ -14,12 +14,14 @@
 @section scripts {
     <abp-script src="/Pages/CmsKit/Contents/addWidgetModal.js" />
 }
-
-    <abp-modal size="Large" id="addWidgetModal">
+@{
+    bool isDefinedWidget = Model.Widgets.Count() > 1;
+}
+<abp-modal size="Large" id="addWidgetModal">
     <abp-modal-header title="@L["AddWidget"].Value"></abp-modal-header>
     <abp-modal-body>
         <div class="container">
-                @if (Model.Widgets.Count() > 1)
+            @if (isDefinedWidget)
             {
                 <abp-select asp-for="ViewModel.Widget" />
 
@@ -42,6 +44,9 @@
         </div>
     </abp-modal-body>
     <abp-modal-footer>
+        @if (isDefinedWidget)
+        {
             <button class="btn btn-primary float-end save-changes" type="submit">@L["Add"]</button>
+        }
     </abp-modal-footer>
 </abp-modal>