Добавлена загрузка и сохранение сигналов

Signal Generator/MainWindow.xaml

@@ -5,7 +5,7 @@
         xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
         xmlns:local="clr-namespace:Signal_Generator"
         mc:Ignorable="d"
-        Title="Генератор сигналов" Height="450" Width="600">
+        Title="Генератор сигналов" Height="450" Width="600" Closing="Window_Closing">
     <Grid Margin="10">
         <Grid.RowDefinitions>
             <RowDefinition Height="*"/>

Signal Generator/MainWindow.xaml.cs

@@ -28,6 +28,8 @@ namespace Signal_Generator
         public MainWindow()
         {
             InitializeComponent();
+            var c = Properties.Settings.LoadSignals();
+            if (c != null) multiSignal.signals = c;
             signals_ListBox.Items.Clear();
             signals_ListBox.ItemsSource = multiSignal.signals;
         }
@@ -69,5 +71,10 @@ namespace Signal_Generator
             var x = signals_ListBox.SelectedItem as IAnalogSignal;
             multiSignal.Remove(x);
         }
+
+        private void Window_Closing(object sender, System.ComponentModel.CancelEventArgs e)
+        {
+            Properties.Settings.SaveSignals(multiSignal.signals);
+        }
     }
 }

Signal Generator/Settings.cs

@@ -1,4 +1,8 @@
-namespace Signal_Generator.Properties {
+using System.Collections.ObjectModel;
+using System.IO;
+using System.Runtime.Serialization.Formatters.Binary;
+
+namespace Signal_Generator.Properties {
     
     
     // Этот класс позволяет обрабатывать определенные события в классе параметров:
@@ -11,9 +15,9 @@
         public Settings() {
             // // Для добавления обработчиков событий для сохранения и изменения параметров раскомментируйте приведенные ниже строки:
             //
-            // this.SettingChanging += this.SettingChangingEventHandler;
+            this.SettingChanging += this.SettingChangingEventHandler;
             //
-            // this.SettingsSaving += this.SettingsSavingEventHandler;
+            this.SettingsSaving += this.SettingsSavingEventHandler;
             //
         }
         
@@ -24,5 +28,24 @@
         private void SettingsSavingEventHandler(object sender, System.ComponentModel.CancelEventArgs e) {
             // Добавьте здесь код для обработки события SettingsSaving.
         }
+
+        public static void SaveSignals(ObservableCollection<IAnalogSignal> signals)
+        {
+            BinaryFormatter formatter = new BinaryFormatter();
+            using (FileStream fs = new FileStream("settings.dat", FileMode.OpenOrCreate))
+            {
+                formatter.Serialize(fs, signals);
+            }
+        }
+
+        public static ObservableCollection<IAnalogSignal> LoadSignals()
+        {
+            BinaryFormatter formatter = new BinaryFormatter();
+            using (FileStream fs = new FileStream("settings.dat", FileMode.Open))
+            {
+                if (!fs.CanRead) return null;
+                return (ObservableCollection<IAnalogSignal>)formatter.Deserialize(fs);
+            }
+        }
     }
 }

Signal Generator/Signal/Base/AnalogSignalMethods.cs

@@ -7,6 +7,7 @@ using System.Threading.Tasks;
 
 namespace Signal_Generator
 {
+    [Serializable]
     class AnalogSignalMethods
     {
         protected string paramsToString(Collection<Parameter> paramsCollection)

Signal Generator/Signal/Base/Parameter.cs

@@ -6,6 +6,7 @@ using System.Threading.Tasks;
 
 namespace Signal_Generator
 {
+    [Serializable]
     class Parameter
     {
         public string name { get; set; }

Signal Generator/Signal/FmSignal.cs

@@ -7,6 +7,7 @@ using System.Threading.Tasks;
 
 namespace Signal_Generator
 {
+    [Serializable]
     class FmSignal : AnalogSignalMethods, IAnalogSignal
     {
         public Collection<Parameter> paramsCollection { get; set; }

Signal Generator/Signal/MultiSignal.cs

@@ -10,7 +10,7 @@ namespace Signal_Generator
     public class MultiSignal : IAnalogSignal
     {
         private static MultiSignal instance;
-        internal ObservableCollection<IAnalogSignal> signals { get; private set; }
+        internal ObservableCollection<IAnalogSignal> signals { get; set; }
 
         private MultiSignal()
         {

Signal Generator/Signal/SinusoidalSignal.cs

@@ -7,6 +7,7 @@ using System.Threading.Tasks;
 
 namespace Signal_Generator
 {
+    [Serializable]
     class SinusoidalSignal : AnalogSignalMethods, IAnalogSignal
     {
         public string typeToString => "SIN сигнал";