treeview

PacticeSolution/PacticeSolution.sln

@@ -129,6 +129,10 @@ Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "MediaPlayer", "MediaPlayer\
 EndProject
 Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Speech", "Speech\Speech.csproj", "{248DDC0C-F8C0-4687-BBC2-71C7C310537E}"
 EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "TimerAndWorker", "TimerAndWorker\TimerAndWorker.csproj", "{6210631F-C8DF-45DC-B53E-3119E8BDFF9E}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "TreeViewSample", "TreeViewSample\TreeViewSample.csproj", "{CA88EE83-8C7F-4FEF-963A-DEACA5E502FB}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU
@@ -387,6 +391,14 @@ Global
 		{248DDC0C-F8C0-4687-BBC2-71C7C310537E}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{248DDC0C-F8C0-4687-BBC2-71C7C310537E}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{248DDC0C-F8C0-4687-BBC2-71C7C310537E}.Release|Any CPU.Build.0 = Release|Any CPU
+		{6210631F-C8DF-45DC-B53E-3119E8BDFF9E}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{6210631F-C8DF-45DC-B53E-3119E8BDFF9E}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{6210631F-C8DF-45DC-B53E-3119E8BDFF9E}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{6210631F-C8DF-45DC-B53E-3119E8BDFF9E}.Release|Any CPU.Build.0 = Release|Any CPU
+		{CA88EE83-8C7F-4FEF-963A-DEACA5E502FB}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{CA88EE83-8C7F-4FEF-963A-DEACA5E502FB}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{CA88EE83-8C7F-4FEF-963A-DEACA5E502FB}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{CA88EE83-8C7F-4FEF-963A-DEACA5E502FB}.Release|Any CPU.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE

PacticeSolution/TimerAndWorker/App.xaml

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

PacticeSolution/TimerAndWorker/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 TimerAndWorker
+{
+    /// <summary>
+    /// Interaction logic for App.xaml
+    /// </summary>
+    public partial class App : Application
+    {
+    }
+}

PacticeSolution/TimerAndWorker/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/TimerAndWorker/MainWindow.xaml

@@ -0,0 +1,28 @@
+<Window x:Class="TimerAndWorker.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:TimerAndWorker"
+        mc:Ignorable="d"
+        Title="MainWindow" Height="450" Width="800">
+    <Grid>
+        <Grid.RowDefinitions>
+            <RowDefinition Height="*"/>
+            <RowDefinition Height="*"/>
+        </Grid.RowDefinitions>
+        
+        <Label x:Name="lblTime" Grid.Row="0" FontSize="20" HorizontalAlignment="Center" VerticalAlignment="Center"
+               Content="00:00:00"/>
+        <StackPanel Margin="10" Grid.Row="1">
+            <DockPanel DockPanel.Dock="Top">
+                <Button x:Name="btnSyncCalc" HorizontalAlignment="Left" Width="150" Content="Sync"
+                        Click="btnSyncCalc_Click"/>
+                <Button x:Name="btnAsyncCalc" HorizontalAlignment="Right" Width="150" Content="Async"
+                        Click="btnAsyncCalc_Click"/>
+            </DockPanel>
+            <ListBox x:Name="lbResult" Height="100"/>
+            <ProgressBar x:Name="pbCalcProcess" DockPanel.Dock="Bottom" Height="18"/>
+        </StackPanel>
+    </Grid>
+</Window>

PacticeSolution/TimerAndWorker/MainWindow.xaml.cs

@@ -0,0 +1,122 @@
+using System;
+using System.Collections.Generic;
+using System.ComponentModel;
+using System.Linq;
+using System.Text;
+using System.Threading;
+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;
+using System.Windows.Threading;
+
+namespace TimerAndWorker
+{
+    /// <summary>
+    /// Interaction logic for MainWindow.xaml
+    /// </summary>
+    public partial class MainWindow : Window
+    {
+        private readonly int RECURSIVE_COUNT = 10000;
+
+        private DispatcherTimer _timer;
+
+        public MainWindow()
+        {
+            InitializeComponent();
+            InitInstance();
+        }
+
+        private void InitInstance()
+        {
+            _timer = new DispatcherTimer();
+            _timer.Interval = TimeSpan.FromMilliseconds(1);
+            _timer.Tick += _timer_Tick;
+            _timer.Start();
+        }
+
+        private void _timer_Tick(object? sender, EventArgs e)
+        {
+            lblTime.Content = DateTime.Now.ToString("HH:mm:ss.fff");
+        }
+
+        private void btnSyncCalc_Click(object sender, RoutedEventArgs e)
+        {
+            pbCalcProcess.Value = 0;
+            lbResult.Items.Clear();
+
+            int result = 0;
+            for (int i = 0; i < RECURSIVE_COUNT; i++)
+            {
+                if (i % 7 == 0)
+                {
+                    lbResult.Items.Add(i);
+                    lbResult.SelectedIndex = lbResult.Items.Count - 1;
+                    lbResult.ScrollIntoView(lbResult.SelectedItem);
+                    result++;
+                }
+
+                Thread.Sleep(1);
+                pbCalcProcess.Value = Convert.ToInt32((double)i / RECURSIVE_COUNT * 100);
+            }
+
+            MessageBox.Show($"Numbers between 0 and {RECURSIVE_COUNT} divisable by 7: {result}");
+        }
+
+        private void btnAsyncCalc_Click(object sender, RoutedEventArgs e)
+        {
+            pbCalcProcess.Value = 0;
+            lbResult.Items.Clear();
+
+            BackgroundWorker worker = new BackgroundWorker();
+            worker.WorkerReportsProgress = true;
+            worker.DoWork += Worker_DoWork;
+            worker.ProgressChanged += Worker_ProgressChanged;
+            worker.RunWorkerCompleted += Worker_RunWorkerCompleted;
+            worker.RunWorkerAsync(RECURSIVE_COUNT);
+        }
+
+        private void Worker_RunWorkerCompleted(object? sender, RunWorkerCompletedEventArgs e)
+        {
+            MessageBox.Show($"Numbers between 0 and {RECURSIVE_COUNT} divisable by 7: {e.Result}");
+        }
+
+        private void Worker_ProgressChanged(object? sender, ProgressChangedEventArgs e)
+        {
+            pbCalcProcess.Value = e.ProgressPercentage;
+            if (e.UserState != null)
+            {
+                lbResult.Items.Add(e.UserState);
+                lbResult.SelectedIndex = lbResult.Items.Count - 1;
+                lbResult.ScrollIntoView(lbResult.SelectedItem);
+            }
+        }
+
+        private void Worker_DoWork(object? sender, DoWorkEventArgs e)
+        {
+            int max = (int)e.Argument;
+            int result = 0;
+            for (int i = 0; i < max; i++)
+            {
+                int progressPercentage = Convert.ToInt32((double)i / RECURSIVE_COUNT * 100);
+                if (i % 7 == 0)
+                {
+                    result++;
+                    (sender as BackgroundWorker)?.ReportProgress(progressPercentage, i);
+                }
+                else
+                    (sender as BackgroundWorker)?.ReportProgress(progressPercentage);
+
+                Thread.Sleep(1);
+            }
+
+            e.Result = result;
+        }
+    }
+}

PacticeSolution/TimerAndWorker/TimerAndWorker.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/TreeViewSample/App.xaml

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

PacticeSolution/TreeViewSample/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 TreeViewSample
+{
+    /// <summary>
+    /// Interaction logic for App.xaml
+    /// </summary>
+    public partial class App : Application
+    {
+    }
+}

PacticeSolution/TreeViewSample/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/TreeViewSample/MainWindow.xaml

@@ -0,0 +1,66 @@
+<Window x:Class="TreeViewSample.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:TreeViewSample"
+        mc:Ignorable="d"
+        Title="MainWindow" Height="400" Width="400">
+    <Grid>
+        <Grid.RowDefinitions>
+            <RowDefinition Height="*"/>
+            <RowDefinition Height="*"/>
+            <RowDefinition Height="*"/>
+        </Grid.RowDefinitions>
+
+        <TreeView Grid.Row="0" Margin="10">
+            <TreeViewItem Header="Level 1" IsExpanded="True">
+                <TreeViewItem Header="Level 2.1"/>
+                <TreeViewItem Header="Level 2.2" IsExpanded="True">
+                    <TreeViewItem Header="Level 3.1"/>
+                    <TreeViewItem Header="Level 3.2"/>
+                </TreeViewItem>
+                <TreeViewItem Header="Level 2.3"/>
+            </TreeViewItem>
+        </TreeView>
+
+        <TreeView Grid.Row="1" Margin="10">
+            <TreeViewItem IsExpanded="True">
+                <TreeViewItem.Header>
+                    <StackPanel Orientation="Horizontal">
+                        <Ellipse Width="10" Height="10" Margin="0 0 10 0" Fill="LightBlue"/>
+                        <TextBlock Text="Level 1 (Blue)"/>
+                    </StackPanel>
+                </TreeViewItem.Header>
+                <TreeViewItem>
+                    <TreeViewItem.Header>
+                        <StackPanel Orientation="Horizontal">
+                            <TextBlock Text="Level 2.1" Foreground="Blue"/>
+                        </StackPanel>
+                    </TreeViewItem.Header>
+                </TreeViewItem>
+                <TreeViewItem IsExpanded="True">
+                    <TreeViewItem.Header>
+                        <StackPanel Orientation="Horizontal">
+                            <Ellipse Width="10" Height="10" Margin="0 0 10 0" Fill="LightGreen"/>
+                            <TextBlock Text="Level 2.2 (Green)" Foreground="Green"/>
+                        </StackPanel>
+                    </TreeViewItem.Header>
+                    <TreeViewItem>
+                        <TreeViewItem.Header>
+                            <TextBlock Text="Level 3.1" Foreground="Red"/>
+                        </TreeViewItem.Header>
+                    </TreeViewItem>
+                    <TreeViewItem>
+                        <TreeViewItem.Header>
+                            <TextBlock Text="Level 3.2" Foreground="Red"/>
+                        </TreeViewItem.Header>
+                    </TreeViewItem>
+                </TreeViewItem>
+            </TreeViewItem>
+        </TreeView>
+        
+        <TreeView x:Name="trvStructure" Grid.Row="2" Margin="10" 
+                  TreeViewItem.Expanded="trvStructure_Expanded"/>
+    </Grid>
+</Window>

PacticeSolution/TreeViewSample/MainWindow.xaml.cs

@@ -0,0 +1,72 @@
+using System;
+using System.Collections.Generic;
+using System.IO;
+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 TreeViewSample
+{
+    /// <summary>
+    /// Interaction logic for MainWindow.xaml
+    /// </summary>
+    public partial class MainWindow : Window
+    {
+        public MainWindow()
+        {
+            InitializeComponent();
+            InitInstance();
+        }
+
+        private void InitInstance()
+        {
+            DriveInfo[] drives = DriveInfo.GetDrives();
+            foreach (DriveInfo drive in drives)
+            {
+                trvStructure.Items.Add(CreateTreeItem(drive));
+            }
+        }
+
+        private TreeViewItem CreateTreeItem(object obj)
+        {
+            TreeViewItem item = new TreeViewItem();
+            item.Header = obj.ToString();
+            item.Tag = obj;
+            item.Items.Add("Loading...");
+            return item;
+        }
+
+        private void trvStructure_Expanded(object sender, RoutedEventArgs e)
+        {
+            TreeViewItem item = e.Source as TreeViewItem;
+            if (item.Items.Count != 1 || !(item.Items[0] is string))
+                return;
+
+            item.Items.Clear();
+            DirectoryInfo expandedDir = null;
+            if (item.Tag is DriveInfo)
+                expandedDir = (item.Tag as DriveInfo).RootDirectory;
+            if (item.Tag is DirectoryInfo)
+                expandedDir = (item.Tag as DirectoryInfo);
+
+            try
+            {
+                foreach (DirectoryInfo subDir in expandedDir.GetDirectories())
+                    item.Items.Add(CreateTreeItem(subDir));
+            }
+            catch (Exception ex)
+            {
+                MessageBox.Show(ex.Message);
+            }
+        }
+    }
+}

PacticeSolution/TreeViewSample/TreeViewSample.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>