fix null pointer

.gitignore

@@ -0,0 +1,209 @@
+## Ignore Visual Studio temporary files, build results, and
+## files generated by popular Visual Studio add-ons.
+
+# User-specific files
+*.suo
+*.user
+*.userosscache
+*.sln.docstates
+
+# User-specific files (MonoDevelop/Xamarin Studio)
+*.userprefs
+
+# Build results
+**/[Dd]ebug/
+**/[Dd]ebugPublic/
+**/[Rr]elease/
+**/[Rr]eleases/
+**/[Gg]enerated Files/
+**/x64/
+**/x86/
+**/arm/
+**/arm64/
+**/build/
+**/bld/
+**/[Bb]in/
+**/[Oo]bj/
+
+# Visual Studo 2015 cache/options directory
+.vs/
+
+# MSTest test Results
+[Tt]est[Rr]esult*/
+[Bb]uild[Ll]og.*
+
+# NUNIT
+*.VisualState.xml
+TestResult.xml
+
+# Build Results of an ATL Project
+[Dd]ebugPS/
+[Rr]eleasePS/
+dlldata.c
+
+*_i.c
+*_p.c
+*_i.h
+*.ilk
+*.meta
+*.obj
+*.pch
+*.pdb
+*.pgc
+*.pgd
+*.rsp
+*.sbr
+*.tlb
+*.tli
+*.tlh
+*.tmp
+*.tmp_proj
+*.log
+*.vspscc
+*.vssscc
+.builds
+*.pidb
+*.svclog
+*.scc
+
+# Chutzpah Test files
+_Chutzpah*
+
+# Visual C++ cache files
+ipch/
+*.aps
+*.ncb
+*.opensdf
+*.sdf
+*.cachefile
+*.VC.db
+*.VC.VC.opendb
+
+# Visual Studio profiler
+*.psess
+*.vsp
+*.vspx
+
+# TFS 2012 Local Workspace
+$tf/
+
+# Guidance Automation Toolkit
+*.gpState
+
+# ReSharper is a .NET coding add-in
+_ReSharper*/
+*.[Rr]e[Ss]harper
+*.DotSettings.user
+
+# JustCode is a .NET coding addin-in
+.JustCode
+
+# TeamCity is a build add-in
+_TeamCity*
+
+# DotCover is a Code Coverage Tool
+*.dotCover
+
+# NCrunch
+_NCrunch_*
+.*crunch*.local.xml
+
+# MightyMoose
+*.mm.*
+AutoTest.Net/
+
+# Web workbench (sass)
+.sass-cache/
+
+# Installshield output folder
+[Ee]xpress/
+
+# DocProject is a documentation generator add-in
+DocProject/buildhelp/
+DocProject/Help/*.HxT
+DocProject/Help/*.HxC
+DocProject/Help/*.hhc
+DocProject/Help/*.hhk
+DocProject/Help/*.hhp
+DocProject/Help/Html2
+DocProject/Help/html
+
+# Click-Once directory
+publish/
+
+# Publish Web Output
+*.[Pp]ublish.xml
+*.azurePubxml
+# TODO: Comment the next line if you want to checkin your web deploy settings 
+# but database connection strings (with potential passwords) will be unencrypted
+*.pubxml
+*.publishproj
+
+# NuGet Packages
+*.nupkg
+# The packages folder can be ignored because of Package Restore
+**/packages/*
+# except build/, which is used as an MSBuild target.
+!**/packages/build/
+# Uncomment if necessary however generally it will be regenerated when needed
+#!**/packages/repositories.config
+
+# Windows Azure Build Output
+csx/
+*.build.csdef
+
+# Microsoft Store app package directory
+AppPackages/
+**/[Bb]undle[Aa]tifacts
+
+# Others
+*.[Cc]ache
+ClientBin/
+[Ss]tyle[Cc]op.*
+~$*
+*~
+*.dbmdl
+*.dbproj.schemaview
+*.pfx
+*.publishsettings
+node_modules/
+bower_components/
+
+# RIA/Silverlight projects
+Generated_Code/
+
+# Backup & report files from converting an old project file
+# to a newer Visual Studio version. Backup files are not needed,
+# because we have git ;-)
+_UpgradeReport_Files/
+Backup*/
+UpgradeLog*.XML
+UpgradeLog*.htm
+
+# SQL Server files
+*.mdf
+*.ldf
+
+# Business Intelligence projects
+*.rdl.data
+*.bim.layout
+*.bim_*.settings
+
+# Microsoft Fakes
+FakesAssemblies/
+
+# Node.js Tools for Visual Studio
+.ntvs_analysis.dat
+
+# Visual Studio 6 build log
+*.plg
+
+# Visual Studio 6 workspace options file
+*.opt
+
+# Files generated by samples with custom Direct2D effects
+*.fxlib
+
+# Custom ignores
+gallery.xml
+project.lock.json

PCUT/Http.Core/Constants/HttpConstants.cs

@@ -10,7 +10,7 @@
 
         public static class Auth
         {
-            public const string BaseUrl = "http://14.225.255.245:3003";
+            public const string BaseUrl = "http://app.pcut.vn:3000";
 
             public const string Login = "api/auth/login";
             public const string Refresh = "api/auth/refresh";
@@ -19,7 +19,7 @@
 
         public static class Api
         {
-            public const string BaseUrl = "http://14.225.255.245:3003";
+            public const string BaseUrl = "http://app.pcut.vn:3000";
 
             public const string LogOut = "api/auth/logout";
             public const string Profile = "api/auth/profile";

PCUT/PCUT/Package.appxmanifest

@@ -9,7 +9,7 @@
   <Identity
     Name="ac171214-3336-4e02-845d-9bdc107cce71"
     Publisher="CN=pcut, O=PCUT, L=HN, S=HN, C=VN"
-    Version="1.3.0.0" />
+    Version="1.3.2.0" />
 
   <mp:PhoneIdentity PhoneProductId="ac171214-3336-4e02-845d-9bdc107cce71" PhonePublisherId="00000000-0000-0000-0000-000000000000"/>
 

PCUT/PCUT/Pages/DesignCenter/DesignCenterPage.xaml.cs

@@ -149,7 +149,7 @@ namespace PCUT.Pages
             if (infos != null && infos.Any())
             {
                 var portInfos = new List<PortInfo>();
-                foreach (var info in infos)
+                foreach (var info in infos.Where(x => x.Id != null))
                 {
                     using (var deviceInfo = await SerialDevice.FromIdAsync(info.Id))
                     {
@@ -181,12 +181,12 @@ namespace PCUT.Pages
         private async void Refresh_Click(object sender, RoutedEventArgs e)
         {
             var deviceInfo = await GetPortInfos();
-            viewModel.Ports.Clear();
+                viewModel.Ports.Clear();
-            foreach (var info in deviceInfo)
+                foreach (var info in deviceInfo)
-                viewModel.Ports.Add(info);
+                    viewModel.Ports.Add(info);
-            if (deviceInfo.Any())
+                if (deviceInfo.Any())
-                viewModel.SelectedPortIndex = 0;
+                    viewModel.SelectedPortIndex = 0;
-        }
+            }
 
         private void TextBox_BeforeTextChanging(TextBox sender, TextBoxBeforeTextChangingEventArgs args)
         {