Clear out nullable warnings

Tidstagning/AboutBox.cs

@@ -40,9 +40,11 @@ namespace Tidstagning
         {
             get
             {
-                if (Assembly.GetExecutingAssembly().GetName().Version != null)
+                Version? version = Assembly.GetExecutingAssembly().GetName().Version;
+                if (version is not null)
                 {
-                    return Assembly.GetExecutingAssembly().GetName().Version.ToString();
+                    return version.ToString();
+                    
                 } 
                 else
                 {

Tidstagning/ConfigUI.cs

@@ -12,10 +12,6 @@ namespace Tidstagning
 {
     public partial class ConfigUI : Form
     {
-
-        private String OnCommand = "";
-        private String OffCommand = "";
-
         public ConfigUI()
         {
             InitializeComponent();

Tidstagning/MainUI.cs

@@ -77,6 +77,7 @@ namespace Tidstagning
             if (e.RowIndex >= 0 && e.ColumnIndex == grid.Columns["DNF"].Index)
             {
                 entries[e.RowIndex].DNF();
+                if(liste is not null)
                     liste.WriteDNF(entries[e.RowIndex]);
 
                 grid.ClearSelection();
@@ -86,12 +87,14 @@ namespace Tidstagning
             if (e.RowIndex >= 0 && e.ColumnIndex == grid.Columns["Complete"].Index)
             {
                 entries[e.RowIndex].Complete();
+                if(liste is not null)
                     liste.WriteComplete(entries[e.RowIndex]);
 
                 grid.ClearSelection();
                 grid.CurrentCell = null;
                 entries.RemoveAt(e.RowIndex);
 
+                if(horn is not null)
                     horn.Sound((uint)numericSignalLength.Value);
             }
             grid.Refresh();
@@ -113,6 +116,7 @@ namespace Tidstagning
             if (checkStartProcedure.Checked)
             {
                 liste.Write("Automatisk Start Procedure er aktiv.");
+                if(horn is not null)
                     startprocedure.setObjects(horn, liste);
             }
             else
@@ -126,8 +130,11 @@ namespace Tidstagning
         {
             btnStop.Enabled = false;
             btnStart.Enabled = true;
+            if (liste is not null)
+            {
                 liste.WriteFooter();
                 liste.Close();
+            }
             checkStartProcedure.Enabled = true;
             flowLayoutPanelConfiguration.Enabled = true;
         }
@@ -140,6 +147,7 @@ namespace Tidstagning
 
         private void btnTest_Click(object sender, EventArgs e)
         {
+            if(horn is not null)
                 horn.Sound((uint)numericSignalLength.Value);
         }
 
@@ -154,7 +162,7 @@ namespace Tidstagning
 
         private void comboComport_SelectedIndexChanged(object sender, EventArgs e)
         {
-            if (comboComport.Items.Count != 0)
+            if (comboComport is not null && comboComport.Items.Count != 0 && comboComport.SelectedItem is not null)
             {
                 horn = new Relay(comboComport.SelectedItem.ToString());
                 Properties.Settings.Default.ComPort = comboComport.SelectedItem.ToString();

Tidstagning/Program.cs

@@ -5,9 +5,8 @@ using System.Windows.Forms;
 
 namespace Tidstagning
 {
-    static class Program
+    class Program
     {
-
         public class Options
         {
             [Option('c', "config", Required = false, HelpText = "Enable configuration menu.")]
@@ -20,7 +19,6 @@ namespace Tidstagning
             CommandLine.Parser.Default.ParseArguments<Options>(args)
               .WithParsed(RunOptions)
               .WithNotParsed(HandleParseError);
-
         }
         static void RunOptions(Options opts)
         {

Tidstagning/Tidstagning.csproj

@@ -24,6 +24,10 @@
 
   <ItemGroup>
     <PackageReference Include="CommandLineParser" Version="2.9.0-preview1" />
+    <PackageReference Include="Microsoft.Extensions.Logging" Version="7.0.0-preview.3.22175.4" />
+    <PackageReference Include="Microsoft.Extensions.Logging.Configuration" Version="7.0.0-preview.3.22175.4" />
+    <PackageReference Include="Microsoft.Extensions.Logging.Console" Version="7.0.0-preview.3.22175.4" />
+    <PackageReference Include="Microsoft.Extensions.Logging.Debug" Version="7.0.0-preview.3.22175.4" />
     <PackageReference Include="System.IO.Ports" Version="7.0.0-preview.3.22175.4" />
   </ItemGroup>