From 4223b3e2253a63e5f98382aa1af5783ad8ca8744 Mon Sep 17 00:00:00 2001
From: salim ben ahben <40862545+Sben65@users.noreply.github.com>
Date: Tue, 1 Feb 2022 10:38:39 +0100
Subject: [PATCH] fix #149 (#153)

---
 .../Client/Pages/DeviceModels/CreateDeviceModelPage.razor  | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/src/AzureIoTHub.Portal/Client/Pages/DeviceModels/CreateDeviceModelPage.razor b/src/AzureIoTHub.Portal/Client/Pages/DeviceModels/CreateDeviceModelPage.razor
index dcfcc9bc4..b0dd9b7ab 100644
--- a/src/AzureIoTHub.Portal/Client/Pages/DeviceModels/CreateDeviceModelPage.razor
+++ b/src/AzureIoTHub.Portal/Client/Pages/DeviceModels/CreateDeviceModelPage.razor
@@ -178,7 +178,12 @@
 
     private void AddCommand()
     {
-        DeviceModel.Commands.Add(new DeviceModelCommand());
+        var last = DeviceModel.Commands.LastOrDefault();
+
+        if (DeviceModel.Commands.Count == 0 || (last.Name is not null && last.Frame is not null) )
+        {
+            DeviceModel.Commands.Add(new DeviceModelCommand());
+        }
     }
 
     private void DeleteCommand(DeviceModelCommand item)