...

TaxPayerFull/Pages/UserPanel/InvoiceItem.razor

@@ -122,17 +122,21 @@
             <InputText style=" text-align: center;" @bind-Value="invoice.InvoiceDate" type="text" class="form-control" id="inputInvoiceDate" placeholder="تاریخ" />
         </div>
     </div>
-    @if (InvoiceID == 0 || InvoiceID == null ? false : true)
-    {
+     @if (InvoiceID == 0 || InvoiceID == null ? false : true)
+    { 
 
     <br />  <hr class="hr" />
     <div class="row g-3">
         <Tabs NavStyle="NavStyle.VerticalUnderline">
-            <Tab Title="آیتم ها" IsActive="InvoiceID==0 || InvoiceID==null ? false : true">
+            <Tab Title="آیتم ها" IsActive="true">
                 <Content>
                     <div class="row g-3">
                         <div class="form-group col-md-11">
-                            <LGridInvoiceItem InvoiceID="InvoiceID??0" OnMultipleOfThree="EventCallback.Factory.Create<string>(this, CallBack)" InvoiceItems="invoice.items" />
+                                @if (InvoiceID.HasValue && invoice.items.Count > 0)
+                                {
+                                    <LGridInvoiceItem InvoiceID="InvoiceID.Value" OnMultipleOfThree="EventCallback.Factory.Create<string>(this, CallBack)" InvoiceItems="invoice.items" />
+
+                                }
                         </div>
                         <div class="form-group col-md-1">
 
@@ -229,7 +233,7 @@
 
     protected override async Task OnParametersSetAsync()
     {
-        PreloadService.Show(SpinnerColor.Dark);
+
         Cus = await fv.GetCustomers();
         Patterns = await fv.GetPatterns();
         if (InvoiceID != null && InvoiceID > 0)
@@ -252,7 +256,7 @@
 
         Hidealert = true;
         alertMessage = "";
-        PreloadService.Hide();
+      
         await base.OnParametersSetAsync();
     }
 }
@@ -273,6 +277,7 @@
     }
     private async Task LoadData()
     {
+        PreloadService.Show(SpinnerColor.Dark);
         var rsp = await hc.Get($"Invoice/Get/{InvoiceID}");
         if (rsp.IsSuccessStatusCode)
         {
@@ -280,6 +285,8 @@
         }
         else
             hc._nav.NavigateTo("/Panel");
+
+        PreloadService.Hide();
     }
     public async Task CallBack(ActionInResultComponent result)
     {