fix editing non-timed annotations

Azaion.Annotator/DTO/FormState.cs

@@ -24,19 +24,18 @@ public class FormState
     public TimeSpan? GetTime(string name)
     {
         var timeStr = name.Split("_").LastOrDefault();
-        if (string.IsNullOrEmpty(timeStr))
+        if (string.IsNullOrEmpty(timeStr) || timeStr.Length < 7)
             return null;
-        
-        try
-        {
-            //For some reason, TimeSpan.ParseExact doesn't work on every platform.
-            return new TimeSpan(
-                days: 0,
-                hours: int.Parse(timeStr[0..1]),
-                minutes: int.Parse(timeStr[1..3]),
-                seconds: int.Parse(timeStr[3..5]),
-                milliseconds: int.Parse(timeStr[5..6]) * 100);
-        }
-        catch (Exception e) {  return null;  }
+
+        //For some reason, TimeSpan.ParseExact doesn't work on every platform.
+        if (!int.TryParse(timeStr[0..1], out var hours))
+            return null;
+        if (!int.TryParse(timeStr[1..3], out var minutes))
+            return null;
+        if (!int.TryParse(timeStr[3..5], out var seconds))
+            return null;
+        if (!int.TryParse(timeStr[5..6], out var milliseconds))
+            return null;
+        return new TimeSpan(0, hours, minutes, seconds, milliseconds * 100);
     }
 }

Azaion.Annotator/DTO/Label.cs

@@ -135,31 +135,24 @@ public class YoloLabel : Label
 
         var strings = s.Replace(',', '.').Split(' ');
         if (strings.Length != 5)
-            return null;
+            throw new Exception("Wrong labels format!");
 
-        try
+        var res = new YoloLabel
         {
-            var res = new YoloLabel
-            {
-                ClassNumber = int.Parse(strings[0], CultureInfo.InvariantCulture),
-                CenterX = double.Parse(strings[1], CultureInfo.InvariantCulture),
-                CenterY = double.Parse(strings[2], CultureInfo.InvariantCulture),
-                Width = double.Parse(strings[3], CultureInfo.InvariantCulture),
-                Height = double.Parse(strings[4], CultureInfo.InvariantCulture)
-            };
-            return res;
-        }
-        catch (Exception)
-        {
-            return null;
-        }
+            ClassNumber = int.Parse(strings[0], CultureInfo.InvariantCulture),
+            CenterX = double.Parse(strings[1], CultureInfo.InvariantCulture),
+            CenterY = double.Parse(strings[2], CultureInfo.InvariantCulture),
+            Width = double.Parse(strings[3], CultureInfo.InvariantCulture),
+            Height = double.Parse(strings[4], CultureInfo.InvariantCulture)
+        };
+        return res;
     }
 
     public static async Task<List<YoloLabel>> ReadFromFile(string filename)
     {
         var str = await File.ReadAllTextAsync(filename);
 
-        return str.Split(Environment.NewLine)
+        return str.Split('\n')
             .Select(Parse)
             .Where(ann => ann != null)
             .ToList()!;

Azaion.Annotator/DTO/ThumbnailDto.cs

@@ -1,4 +1,5 @@
 using System.ComponentModel;
+using System.IO;
 using System.Runtime.CompilerServices;
 using System.Windows.Media.Imaging;
 using Azaion.Annotator.Extensions;
@@ -26,6 +27,7 @@ public class ThumbnailDto : INotifyPropertyChanged
             OnPropertyChanged();
         }
     }
+    public string ImageName => Path.GetFileName(ImagePath);
 
     public void UpdateImage() => _image = null;