Avalonia 11.1.3 with VSCode.

MPDCtrl-AvaloniaUI/.vscode/launch.json

@@ -0,0 +1,26 @@
+{
+    "version": "0.2.0",
+    "configurations": [
+        {
+            // Use IntelliSense to find out which attributes exist for C# debugging
+            // Use hover for the description of the existing attributes
+            // For further information visit https://github.com/dotnet/vscode-csharp/blob/main/debugger-launchjson.md
+            "name": ".NET Core Launch (console)",
+            "type": "coreclr",
+            "request": "launch",
+            "preLaunchTask": "build",
+            // If you have changed target frameworks, make sure to update the program path.
+            "program": "${workspaceFolder}/bin/Debug/net8.0/MPDCtrlX.dll",
+            "args": [],
+            "cwd": "${workspaceFolder}",
+            // For more information about the 'console' field, see https://aka.ms/VSCode-CS-LaunchJson-Console
+            "console": "internalConsole",
+            "stopAtEntry": false
+        },
+        {
+            "name": ".NET Core Attach",
+            "type": "coreclr",
+            "request": "attach"
+        }
+    ]
+}

MPDCtrl-AvaloniaUI/.vscode/tasks.json

@@ -0,0 +1,41 @@
+{
+    "version": "2.0.0",
+    "tasks": [
+        {
+            "label": "build",
+            "command": "dotnet",
+            "type": "process",
+            "args": [
+                "build",
+                "${workspaceFolder}/MPDCtrlX.csproj",
+                "/property:GenerateFullPaths=true",
+                "/consoleloggerparameters:NoSummary;ForceNoAlign"
+            ],
+            "problemMatcher": "$msCompile"
+        },
+        {
+            "label": "publish",
+            "command": "dotnet",
+            "type": "process",
+            "args": [
+                "publish",
+                "${workspaceFolder}/MPDCtrlX.csproj",
+                "/property:GenerateFullPaths=true",
+                "/consoleloggerparameters:NoSummary;ForceNoAlign"
+            ],
+            "problemMatcher": "$msCompile"
+        },
+        {
+            "label": "watch",
+            "command": "dotnet",
+            "type": "process",
+            "args": [
+                "watch",
+                "run",
+                "--project",
+                "${workspaceFolder}/MPDCtrlX.csproj"
+            ],
+            "problemMatcher": "$msCompile"
+        }
+    ]
+}

MPDCtrl-AvaloniaUI/App.axaml

@@ -0,0 +1,17 @@
+<Application xmlns="https://github.com/avaloniaui"
+             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+             x:Class="MPDCtrlX.App"
+             xmlns:local="using:MPDCtrlX"
+             RequestedThemeVariant="Default">
+             <!-- "Default" ThemeVariant follows system theme variant. "Dark" or "Light" are other available options. -->
+
+    <Application.DataTemplates>
+        <local:ViewLocator/>
+    </Application.DataTemplates>
+
+    <Application.Styles>
+		<!-- 
+		<FluentTheme DensityStyle="Compact"/> -->
+		<SimpleTheme/>
+    </Application.Styles>
+</Application>

MPDCtrl-AvaloniaUI/App.axaml.cs

@@ -0,0 +1,60 @@
+using Avalonia;
+using Avalonia.Controls.ApplicationLifetimes;
+using Avalonia.Data.Core;
+using Avalonia.Data.Core.Plugins;
+using Avalonia.Markup.Xaml;
+using MPDCtrlX.ViewModels;
+using MPDCtrlX.Views;
+using System;
+using System.IO;
+using System.Text;
+
+namespace MPDCtrlX;
+
+public partial class App : Application
+{
+    public override void Initialize()
+    {
+        AvaloniaXamlLoader.Load(this);
+    }
+
+    public override void OnFrameworkInitializationCompleted()
+    {
+        if (ApplicationLifetime is IClassicDesktopStyleApplicationLifetime desktop)
+        {
+            // Line below is needed to remove Avalonia data validation.
+            // Without this line you will get duplicate validations from both Avalonia and CT
+            BindingPlugins.DataValidators.RemoveAt(0);
+            desktop.MainWindow = new MainWindow
+            {
+                DataContext = new MainWindowViewModel(),
+            };
+        }
+
+        base.OnFrameworkInitializationCompleted();
+    }
+
+    private static StringBuilder Errortxt = new StringBuilder();
+    public static bool IsSaveErrorLog;
+    public static string LogFilePath = string.Empty;
+    public static void AppendErrorLog(string errorTxt, string kindTxt)
+    {
+        DateTime dt = DateTime.Now;
+        string nowString = dt.ToString("yyyy/MM/dd HH:mm:ss");
+
+        Errortxt.AppendLine(nowString + " - " + kindTxt + " - " + errorTxt);
+    }
+
+    public static void SaveErrorLog()
+    {
+        if (!IsSaveErrorLog)
+            return;
+
+        if (string.IsNullOrEmpty(LogFilePath))
+            return;
+
+        string s = Errortxt.ToString();
+        if (!string.IsNullOrEmpty(s))
+            File.WriteAllText(LogFilePath, s);
+    }
+}

MPDCtrl-AvaloniaUI/MPDCtrl/Common/RelayCommand.cs → MPDCtrl-AvaloniaUI/Common/RelayCommand.cs

@@ -7,7 +7,7 @@
 using System.Windows;
 using System.Windows.Input;
 
-namespace MPDCtrl.Common
+namespace MPDCtrlX.Common
 {
     /// <summary>
     /// GenericRelayCommand