fix #639

src/MpvNet.Windows/WinForms/MainForm.cs

@@ -385,7 +385,9 @@ public partial class MainForm : Form
             foreach (string path in App.Settings.RecentFiles)
             {
                 var file = AppClass.GetTitleAndPath(path);
-                var menuItem = MenuHelp.Add(recentMenuItem.Items, file.Title.ShortPath(100))!;
+                var menuItem = MenuHelp.Add(recentMenuItem.Items, file.Title.ShortPath(100));
+
+                if (menuItem != null)
                     menuItem.Click += (sender, args) => Player.LoadFiles(new[] { file.Path }, true, false);
             }
 
@@ -416,13 +418,17 @@ public partial class MainForm : Form
                 {
                     if (item.Length != TimeSpan.Zero)
                     {
-                        var menuItem = MenuHelp.Add(titlesMenuItem.Items, $"Title {item.Index + 1}")!;
+                        var menuItem = MenuHelp.Add(titlesMenuItem.Items, $"Title {item.Index + 1}");
+
+                        if (menuItem != null)
+                        {
                             menuItem.InputGestureText = item.Length.ToString();
                             menuItem.Click += (sender, args) => Player.SetBluRayTitle(item.Index);
                         }
                     }
                 }
             }
+        }
 
         var profilesMenuItem = FindMenuItem(_("Profile"), "Profile");
 
@@ -432,8 +438,10 @@ public partial class MainForm : Form
             {
                 if (!profile.StartsWith("extension."))
                 {
-                    var menuItem = MenuHelp.Add(profilesMenuItem.Items, profile)!;
+                    var menuItem = MenuHelp.Add(profilesMenuItem.Items, profile);
 
+                    if (menuItem != null)
+                    {
                         menuItem.Click += (sender, args) =>
                         {
                             Player.CommandV("show-text", profile);
@@ -442,6 +450,7 @@ public partial class MainForm : Form
                     }
                 }
             }
+        }
 
         var audioDevicesMenuItem = FindMenuItem(_("Audio Device"), "Audio Device");
 
@@ -451,7 +460,10 @@ public partial class MainForm : Form
 
             foreach (var pair in Player.AudioDevices)
             {
-                var menuItem = MenuHelp.Add(audioDevicesMenuItem.Items, pair.Value)!;
+                var menuItem = MenuHelp.Add(audioDevicesMenuItem.Items, pair.Value);
+
+                if (menuItem != null)
+                {
                     menuItem.IsChecked = pair.Name == Player.GetPropertyString("audio-device");
 
                     menuItem.Click += (sender, args) =>
@@ -462,6 +474,7 @@ public partial class MainForm : Form
                     };
                 }
             }
+        }
 
         var customMenuItem = FindMenuItem(_("Custom"), "Custom");
 
@@ -473,11 +486,15 @@ public partial class MainForm : Form
             {
                 foreach (Binding binding in customBindings)
                 {
-                    var menuItem = MenuHelp.Add(customMenuItem.Items, binding.Comment)!;
+                    var menuItem = MenuHelp.Add(customMenuItem.Items, binding.Comment);
+
+                    if (menuItem != null)
+                    {
                         menuItem.Click += (sender, args) => Player.Command(binding.Command);
                         menuItem.InputGestureText = binding.Input;
                     }
                 }
+            }
             else
             {
                 if (ContextMenu.Items.Contains(customMenuItem))
@@ -889,7 +906,7 @@ public partial class MainForm : Form
                 path = path + "|" + title;
         }
 
-        if (!string.IsNullOrEmpty(path) && path != @"bd://" && path != @"dvd://")
+        if (!string.IsNullOrEmpty(path) && path != "-" && path != @"bd://" && path != @"dvd://")
         {
             if (App.Settings.RecentFiles.Contains(path))
                 App.Settings.RecentFiles.Remove(path);