mvvm command (need to fix)

PacticeSolution/MVVMButtonControl/App.xaml

@@ -0,0 +1,9 @@
+<Application x:Class="MVVMButtonControl.App"
+             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+             xmlns:local="clr-namespace:MVVMButtonControl"
+             StartupUri="MainWindow.xaml">
+    <Application.Resources>
+         
+    </Application.Resources>
+</Application>

PacticeSolution/MVVMButtonControl/App.xaml.cs

@@ -0,0 +1,17 @@
+using System;
+using System.Collections.Generic;
+using System.Configuration;
+using System.Data;
+using System.Linq;
+using System.Threading.Tasks;
+using System.Windows;
+
+namespace MVVMButtonControl
+{
+    /// <summary>
+    /// Interaction logic for App.xaml
+    /// </summary>
+    public partial class App : Application
+    {
+    }
+}

PacticeSolution/MVVMButtonControl/AssemblyInfo.cs

@@ -0,0 +1,10 @@
+using System.Windows;
+
+[assembly: ThemeInfo(
+    ResourceDictionaryLocation.None, //where theme specific resource dictionaries are located
+                                     //(used if a resource is not found in the page,
+                                     // or application resource dictionaries)
+    ResourceDictionaryLocation.SourceAssembly //where the generic resource dictionary is located
+                                              //(used if a resource is not found in the page,
+                                              // app, or any theme specific resource dictionaries)
+)]

PacticeSolution/MVVMButtonControl/MVVMButtonControl.csproj

@@ -0,0 +1,10 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>WinExe</OutputType>
+    <TargetFramework>net6.0-windows</TargetFramework>
+    <Nullable>enable</Nullable>
+    <UseWPF>true</UseWPF>
+  </PropertyGroup>
+
+</Project>

PacticeSolution/MVVMButtonControl/MainWindow.xaml

@@ -0,0 +1,32 @@
+<Window x:Class="MVVMButtonControl.MainWindow"
+        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
+        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
+        xmlns:local="clr-namespace:MVVMButtonControl" xmlns:viewmodel="clr-namespace:MVVMButtonControl.ViewModel"
+        mc:Ignorable="d"
+        Title="MainWindow" Height="300" Width="200">
+
+    <Window.DataContext>
+        <viewmodel:ModelViewMain/>
+    </Window.DataContext>
+
+    <StackPanel>
+        <Button Content="Add TextBox" Command="{Binding TestCommand}"/>
+        <ItemsControl x:Name="itcMain" ItemsSource="{Binding ButtonCollection}">
+            <ItemsControl.ItemTemplate>
+                <DataTemplate>
+                    <Button x:Name="btnItem" 
+                            Content="{Binding Name, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}"
+                            FontWeight="Bold"
+                            FontSize="18"
+                            Margin="10"
+                            Width="100"
+                            Background="{Binding SelectedColor, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}"
+                            Command="{Binding ElementName=itcMain, Path=SubCommandMethod}"
+                            CommandParameter="{Binding Name}"/>
+                </DataTemplate>
+            </ItemsControl.ItemTemplate>
+        </ItemsControl>
+    </StackPanel>
+</Window>

PacticeSolution/MVVMButtonControl/MainWindow.xaml.cs

@@ -0,0 +1,28 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Windows;
+using System.Windows.Controls;
+using System.Windows.Data;
+using System.Windows.Documents;
+using System.Windows.Input;
+using System.Windows.Media;
+using System.Windows.Media.Imaging;
+using System.Windows.Navigation;
+using System.Windows.Shapes;
+
+namespace MVVMButtonControl
+{
+    /// <summary>
+    /// Interaction logic for MainWindow.xaml
+    /// </summary>
+    public partial class MainWindow : Window
+    {
+        public MainWindow()
+        {
+            InitializeComponent();
+        }
+    }
+}

PacticeSolution/MVVMButtonControl/Model/Buttons.cs

@@ -0,0 +1,37 @@
+using System;
+using System.Collections.Generic;
+using System.ComponentModel;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Windows.Media;
+
+namespace MVVMButtonControl.Model
+{
+    internal class Buttons : INotifyPropertyChanged
+    {
+        private Brush _selectedColor = Brushes.Transparent;
+
+        public string Name { get; set; }
+
+        public Brush SelectedColor
+        {
+            get { return _selectedColor; }
+            set
+            {
+                if (_selectedColor != value)
+                    _selectedColor = value;
+
+                OnPropertyChanged("SelectedColor");
+            }
+        }
+
+        public event PropertyChangedEventHandler? PropertyChanged;
+
+
+        protected void OnPropertyChanged(string propertyName)
+        {
+            PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(propertyName));
+        }
+    }
+}

PacticeSolution/MVVMButtonControl/Model/RelayCommand.cs

@@ -0,0 +1,37 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Windows.Input;
+
+namespace MVVMButtonControl.Model
+{
+    internal class RelayCommand<T> : ICommand
+    {
+        private Action<T> _execute;
+        private Predicate<T> _canExecute;
+
+        public event EventHandler? CanExecuteChanged
+        {
+            add { CommandManager.RequerySuggested += value; }
+            remove { CommandManager.RequerySuggested -= value; }
+        }
+
+        public RelayCommand(Action<T> execute, Predicate<T> canExecute = null)
+        {
+            _execute = execute;
+            _canExecute = canExecute;
+        }
+
+        public bool CanExecute(object? parameter)
+        {
+            return _canExecute?.Invoke((T)parameter) ?? true;
+        }
+
+        public void Execute(object? parameter)
+        {
+            _execute((T)parameter);
+        }
+    }
+}

PacticeSolution/MVVMButtonControl/ViewModel/ModelViewMain.cs

@@ -0,0 +1,62 @@
+using MVVMButtonControl.Model;
+using System;
+using System.Collections.Generic;
+using System.Collections.ObjectModel;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Windows.Controls;
+using System.Windows.Input;
+using System.Windows.Media;
+
+namespace MVVMButtonControl.ViewModel
+{
+    internal class ModelViewMain
+    {
+        public ObservableCollection<Buttons> _buttonCollections;
+
+        public ICommand TestCommand { get; private set; }
+
+        public ICommand SubButtonCommand { get; private set; }
+
+
+        public ModelViewMain()
+        {
+            _buttonCollections = new ObservableCollection<Buttons>();
+            this.TestCommand = new RelayCommand<object>(CommandMethod);
+            this.SubButtonCommand = new RelayCommand<object>(SubCommandMethod);
+        }
+
+        public ObservableCollection<Buttons>  ButtonCollection
+        {
+            get { return _buttonCollections; }
+            set
+            {
+                if (_buttonCollections != null)
+                    _buttonCollections = value;
+            }
+        }
+
+        private void CommandMethod(object parameter)
+        {
+            for (int i = 0; i < 4; i++)
+            {
+                this.ButtonCollection.Add(new Buttons { Name = $"Button {i}", SelectedColor = Brushes.Transparent });
+            }
+        }
+
+        private void SubCommandMethod(object parameter)
+        {
+            for (int i = 0; i < this.ButtonCollection.Count; i++)
+            {
+                this.ButtonCollection[i].SelectedColor = Brushes.Transparent;
+            }
+
+            Buttons selected = this.ButtonCollection.Where(b => b.Name.Equals(parameter.ToString())).SingleOrDefault();
+            if (selected == null)
+                return;
+
+            selected.SelectedColor = Brushes.LightCoral;
+        }
+    }
+}

PacticeSolution/PacticeSolution.sln

@@ -21,6 +21,8 @@ Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "MVVMTextInputDetection", "M
 EndProject
 Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "MVVMCanvasRectangle", "MVVMCanvasRectangle\MVVMCanvasRectangle.csproj", "{C7A96511-E6B9-4F80-9C7B-3ABF4FC0AA4B}"
 EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "MVVMButtonControl", "MVVMButtonControl\MVVMButtonControl.csproj", "{8FE48C46-5529-4D0D-A96E-01A5A79B0B18}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU
@@ -63,6 +65,10 @@ Global
 		{C7A96511-E6B9-4F80-9C7B-3ABF4FC0AA4B}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{C7A96511-E6B9-4F80-9C7B-3ABF4FC0AA4B}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{C7A96511-E6B9-4F80-9C7B-3ABF4FC0AA4B}.Release|Any CPU.Build.0 = Release|Any CPU
+		{8FE48C46-5529-4D0D-A96E-01A5A79B0B18}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{8FE48C46-5529-4D0D-A96E-01A5A79B0B18}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{8FE48C46-5529-4D0D-A96E-01A5A79B0B18}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{8FE48C46-5529-4D0D-A96E-01A5A79B0B18}.Release|Any CPU.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE