group and subgroup adding/editing, services added

TimetableDesigner.Customs/ObservableKeyValuePair.cs

@@ -0,0 +1,75 @@
+using System;
+using System.Collections.Generic;
+using System.ComponentModel;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace TimetableDesigner.Customs
+{
+    public class ObservableKeyValuePair<TKey, TValue> : INotifyPropertyChanged
+    {
+        #region FIELDS
+
+        private TKey _key;
+        private TValue _value;
+
+        #endregion
+
+
+
+        #region PROPERTIES
+
+        public TKey Key
+        {
+            get => _key;
+            set
+            {
+                _key = value;
+                NotifyPropertyChanged(nameof(Key));
+            }
+        }
+        public TValue Value
+        {
+            get => _value;
+            set
+            {
+                _value = value;
+                NotifyPropertyChanged(nameof(Value));
+            }
+        }
+
+        #endregion
+
+
+
+        #region CONSTRUCTORS
+
+        public ObservableKeyValuePair() : this(default, default)
+        { }
+
+        public ObservableKeyValuePair(TKey key, TValue value)
+        {
+            _key = key;
+            _value = value;
+        }
+
+        #endregion
+
+
+
+        #region PRIVATE METHODS
+
+        private void NotifyPropertyChanged(string name) => PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(name));
+
+        #endregion
+
+
+
+        #region EVENTS
+
+        public event PropertyChangedEventHandler? PropertyChanged;
+
+        #endregion
+    }
+}