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AmalRajUmapathySelvamAmalRajUmapathySelvam
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Merge pull request #1 from susmitha-sundar/master
How to convert event to command in MVVM pattern in wpf treeview
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‎TreeViewEventToCommandDemo/TreeViewEventToCommandDemo.sln‎

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Microsoft Visual Studio Solution File, Format Version 12.00
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# Visual Studio 15
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VisualStudioVersion = 15.0.28307.168
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MinimumVisualStudioVersion = 10.0.40219.1
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Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "TreeViewEventToCommandDemo", "TreeViewEventToCommandDemo\TreeViewEventToCommandDemo.csproj", "{EF595223-272D-44BA-A5D7-24BB3340F628}"
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EndProject
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Global
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GlobalSection(SolutionConfigurationPlatforms) = preSolution
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Debug|Any CPU = Debug|Any CPU
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Release|Any CPU = Release|Any CPU
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EndGlobalSection
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GlobalSection(ProjectConfigurationPlatforms) = postSolution
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{EF595223-272D-44BA-A5D7-24BB3340F628}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
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{EF595223-272D-44BA-A5D7-24BB3340F628}.Debug|Any CPU.Build.0 = Debug|Any CPU
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{EF595223-272D-44BA-A5D7-24BB3340F628}.Release|Any CPU.ActiveCfg = Release|Any CPU
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{EF595223-272D-44BA-A5D7-24BB3340F628}.Release|Any CPU.Build.0 = Release|Any CPU
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EndGlobalSection
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GlobalSection(SolutionProperties) = preSolution
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HideSolutionNode = FALSE
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EndGlobalSection
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GlobalSection(ExtensibilityGlobals) = postSolution
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SolutionGuid = {90C8A490-DFB0-4461-8888-B7CBAA7B03FF}
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EndGlobalSection
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EndGlobal

‎TreeViewEventToCommandDemo/TreeViewEventToCommandDemo/App.config‎

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<?xml version="1.0" encoding="utf-8"?>
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<configuration>
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<startup>
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<supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.6" />
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</startup>
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<runtime>
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<assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
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<dependentAssembly>
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<assemblyIdentity name="System.Diagnostics.DiagnosticSource" publicKeyToken="cc7b13ffcd2ddd51" culture="neutral" />
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<bindingRedirect oldVersion="0.0.0.0-4.0.1.0" newVersion="4.0.1.0" />
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</dependentAssembly>
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</assemblyBinding>
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</runtime>
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</configuration>

‎TreeViewEventToCommandDemo/TreeViewEventToCommandDemo/App.ico‎

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‎TreeViewEventToCommandDemo/TreeViewEventToCommandDemo/App.xaml‎

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<Application x:Class="TreeViewEventToCommandDemo.App"
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xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
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xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
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xmlns:local="clr-namespace:TreeViewEventToCommandDemo"
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StartupUri="MainWindow.xaml">
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<Application.Resources>
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</Application.Resources>
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</Application>

‎TreeViewEventToCommandDemo/TreeViewEventToCommandDemo/App.xaml.cs‎

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using System;
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using System.Collections.Generic;
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using System.Configuration;
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using System.Data;
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using System.Linq;
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using System.Threading.Tasks;
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using System.Windows;
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namespace TreeViewEventToCommandDemo
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{
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/// <summary>
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/// Interaction logic for App.xaml
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/// </summary>
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public partial class App : Application
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{
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}
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}

‎TreeViewEventToCommandDemo/TreeViewEventToCommandDemo/Helper/Command.cs‎

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using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Text;
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using System.Threading.Tasks;
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using System.Windows.Input;
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namespace TreeViewEventToCommandDemo
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{
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public class BaseCommand : ICommand
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{
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#region Fields
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readonly Action<object> _execute;
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readonly Predicate<object> _canExecute;
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#endregion // Fields
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#region Constructors
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/// <summary>
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/// Creates a new command that can always execute.
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/// </summary>
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/// <param name="execute">The execution logic.</param>
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public BaseCommand(Action<object> execute)
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: this(execute, null)
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{
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}
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/// <summary>
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/// Creates a new command.
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/// </summary>
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/// <param name="execute">The execution logic.</param>
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/// <param name="canExecute">The execution status logic.</param>
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public BaseCommand(Action<object> execute, Predicate<object> canExecute)
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{
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if (execute == null)
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throw new ArgumentNullException("execute");
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_execute = execute;
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_canExecute = canExecute;
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}
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#endregion // Constructors
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#region ICommand Members
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public bool CanExecute(object parameter)
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{
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return _canExecute == null ? true : _canExecute(parameter);
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}
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public event EventHandler CanExecuteChanged
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{
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add { CommandManager.RequerySuggested += value; }
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remove { CommandManager.RequerySuggested -= value; }
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}
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public void Execute(object parameter)
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{
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_execute(parameter);
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}
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#endregion // ICommand Members
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}
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}

‎TreeViewEventToCommandDemo/TreeViewEventToCommandDemo/License.txt‎

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Copyright (c) 2009-2017 Laurent Bugnion (GalaSoft), laurent@galasoft.ch
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"),
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to deal in the Software without restriction, including without limitation the
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rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
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sell copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in all
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copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
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WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

‎TreeViewEventToCommandDemo/TreeViewEventToCommandDemo/MainWindow.xaml‎

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<Window x:Class="TreeViewEventToCommandDemo.MainWindow"
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xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
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xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
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xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
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xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
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xmlns:local="clr-namespace:TreeViewEventToCommandDemo"
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xmlns:I="http://schemas.microsoft.com/expression/2010/interactivity"
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xmlns:cmd="clr-namespace:GalaSoft.MvvmLight.Command;assembly=GalaSoft.MvvmLight.Platform"
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xmlns:syncfusion="http://schemas.syncfusion.com/wpf"
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Title="TreeView EventToCommand Demo"
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Width="400"
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Height="550"
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WindowStartupLocation="CenterScreen">
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<Window.DataContext>
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<local:ViewModel/>
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</Window.DataContext>
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<Grid>
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<syncfusion:SfTreeView
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x:Name="TreeView"
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Margin="20"
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BorderThickness="1"
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SelectionMode="Multiple"
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AutoExpandMode="AllNodes"
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BorderBrush="LightGray"
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ChildPropertyName="Models"
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ItemTemplateDataContextType="Node"
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ItemsSource="{Binding Items}">
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<syncfusion:SfTreeView.ItemTemplate>
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<DataTemplate>
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<Grid>
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<TextBlock FontSize="12" VerticalAlignment="Center" Text="{Binding Content.State}" />
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</Grid>
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</DataTemplate>
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</syncfusion:SfTreeView.ItemTemplate>
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<I:Interaction.Triggers>
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<I:EventTrigger EventName="SelectionChanged" >
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<cmd:EventToCommand Command="{Binding SelectionChangedCommand}" PassEventArgsToCommand="True" />
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</I:EventTrigger>
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</I:Interaction.Triggers>
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</syncfusion:SfTreeView>
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</Grid>
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</Window>

‎TreeViewEventToCommandDemo/TreeViewEventToCommandDemo/MainWindow.xaml.cs‎

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

‎TreeViewEventToCommandDemo/TreeViewEventToCommandDemo/Model/Model.cs‎

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#region Copyright Syncfusion Inc. 2001 - 2011
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// Copyright Syncfusion Inc. 2001 - 2011. All rights reserved.
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// Use of this code is subject to the terms of our license.
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// A copy of the current license can be obtained at any time by e-mailing
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// licensing@syncfusion.com. Any infringement will be prosecuted under
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// applicable laws.
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#endregion
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using System.Collections.ObjectModel;
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using System.Collections.Generic;
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using System.ComponentModel;
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using Syncfusion.Windows.Shared;
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using System.Windows.Media.Imaging;
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namespace TreeViewEventToCommandDemo
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{
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public class Model : NotificationObject
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{
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public Model()
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{
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Models = new ObservableCollection<Model>();
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}
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private ObservableCollection<Model> models;
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public ObservableCollection<Model> Models
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{
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get
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{
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return models;
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}
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set
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{
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models = value;
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this.RaisePropertyChanged("Models");
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}
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}
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#region TreeViewItemAdv Properties
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private string state;
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/// <summary>
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/// Gets or sets a value indicating the Header of the TreeViewItemAdv.
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/// </summary>
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public string State
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{
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get
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{
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return state;
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}
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set
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{
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state = value;
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this.RaisePropertyChanged("State");
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}
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}
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#endregion
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}
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}

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