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susmitha-sundarsusmitha-sundar
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How to load child items on demand in wpf treeview
1 parent 0a38638 commit 86e7a23

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‎LoadOnDemand/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=v4.5"/>
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</startup>
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</configuration>

‎LoadOnDemand/App.ico‎

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‎LoadOnDemand/App.xaml‎

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<Application
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x:Class="LoadOnDemandDemo.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:LoadOnDemandDemo"
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StartupUri="LoadOnDemand.xaml">
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<Application.Resources />
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</Application>

‎LoadOnDemand/App.xaml.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;
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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.Windows;
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using Syncfusion.Licensing;
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namespace LoadOnDemandDemo
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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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public App()
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{
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SyncfusionLicenseProvider.RegisterLicense(DemoCommon.FindLicenseKey());
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}
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}
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}

‎LoadOnDemand/Command/OnDemandCommand.cs‎

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using System;
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using System.Windows.Input;
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namespace LoadOnDemandDemo
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{
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public class OnDemandCommand : ICommand
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{
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private Action<object> executeOnDemandLoading;
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private Func<object, bool> canExecuteOnDemandLoading;
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public OnDemandCommand(Action<object> executeOnDemandLoading, Func<object, bool> canExecuteOnDemandLoading)
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{
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this.executeOnDemandLoading = executeOnDemandLoading;
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this.canExecuteOnDemandLoading = canExecuteOnDemandLoading;
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}
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public event EventHandler CanExecuteChanged;
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public bool CanExecute(object parameter)
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{
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return this.canExecuteOnDemandLoading(parameter);
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}
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public void Execute(object parameter)
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{
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this.executeOnDemandLoading(parameter);
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}
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}
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}

‎LoadOnDemand/LoadOnDemand.xaml‎

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<Window
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x:Class="LoadOnDemandDemo.LoadOnDemand"
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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:local="clr-namespace:LoadOnDemandDemo"
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xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
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xmlns:skin="clr-namespace:Syncfusion.SfSkinManager;assembly=Syncfusion.SfSkinManager.WPF"
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xmlns:syncfusion="http://schemas.syncfusion.com/wpf"
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Title="Load On Demand"
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Width="550"
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Height="600"
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skin:SfSkinManager.VisualStyle="MaterialLight"
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Icon="App.Ico"
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WindowStartupLocation="CenterScreen"
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mc:Ignorable="d">
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<Window.DataContext>
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<local:MusicInfoRepository />
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</Window.DataContext>
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<Grid>
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<syncfusion:SfTreeView
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x:Name="sfTreeView"
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Margin="10"
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AllowDragging="True"
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BorderBrush="LightGray"
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BorderThickness="1"
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ExpandActionTrigger="Node"
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FocusVisualStyle="{x:Null}"
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IsAnimationEnabled="True"
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ItemHeight="30"
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LoadOnDemandCommand="{Binding TreeViewOnDemandCommand}"
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ItemsSource="{Binding Menu}" >
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<syncfusion:SfTreeView.ItemTemplate>
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<DataTemplate>
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<Label
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VerticalContentAlignment="Center"
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Content="{Binding ItemName}"
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FocusVisualStyle="{x:Null}"
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FontSize="12" />
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</DataTemplate>
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</syncfusion:SfTreeView.ItemTemplate>
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</syncfusion:SfTreeView>
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</Grid>
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</Window>

‎LoadOnDemand/LoadOnDemand.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 LoadOnDemandDemo
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{
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/// <summary>
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/// Interaction logic for LoadOnDemand.xaml
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/// </summary>
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public partial class LoadOnDemand : Window
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{
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public LoadOnDemand()
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{
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InitializeComponent();
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}
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}
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}

‎LoadOnDemand/LoadOnDemandDemo_2010.csproj‎

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<?xml version="1.0" encoding="utf-8"?>
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<Project ToolsVersion="12.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
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<Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
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<PropertyGroup>
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<Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
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<Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
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<ProjectGuid>{675472F3-FAEA-49BC-8639-4176D3B083DC}</ProjectGuid>
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<OutputType>WinExe</OutputType>
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<RootNamespace>LoadOnDemandDemo</RootNamespace>
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<AssemblyName>LoadOnDemandDemo</AssemblyName>
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<TargetFrameworkVersion>v4.0</TargetFrameworkVersion>
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<FileAlignment>512</FileAlignment>
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<ProjectTypeGuids>{60dc8134-eba5-43b8-bcc9-bb4bc16c2548};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
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<WarningLevel>4</WarningLevel>
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<AutoGenerateBindingRedirects>true</AutoGenerateBindingRedirects>
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<Deterministic>true</Deterministic>
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</PropertyGroup>
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<PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
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<PlatformTarget>AnyCPU</PlatformTarget>
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<DebugSymbols>true</DebugSymbols>
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<DebugType>full</DebugType>
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<Optimize>false</Optimize>
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<OutputPath>bin\Debug\</OutputPath>
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<DefineConstants>DEBUG;TRACE</DefineConstants>
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<ErrorReport>prompt</ErrorReport>
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<WarningLevel>4</WarningLevel>
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</PropertyGroup>
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<PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
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<PlatformTarget>AnyCPU</PlatformTarget>
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<DebugType>pdbonly</DebugType>
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<Optimize>true</Optimize>
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<OutputPath>bin\Release\</OutputPath>
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<DefineConstants>TRACE</DefineConstants>
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<ErrorReport>prompt</ErrorReport>
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<WarningLevel>4</WarningLevel>
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</PropertyGroup>
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<ItemGroup>
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<Reference Include="Syncfusion.SampleLayout.WPF">
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<SpecificVersion>False</SpecificVersion>
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</Reference>
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<Reference Include="Syncfusion.Shared.Wpf">
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<SpecificVersion>False</SpecificVersion>
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</Reference>
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<Reference Include="Syncfusion.SfTreeView.WPF" >
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<SpecificVersion>False</SpecificVersion>
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</Reference>
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<Reference Include="Syncfusion.SfSkinManager.WPF">
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<SpecificVersion>False</SpecificVersion>
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<Private>True</Private>
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</Reference>
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<Reference Include="Syncfusion.Themes.MaterialLight.WPF">
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<SpecificVersion>False</SpecificVersion>
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<Private>True</Private>
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</Reference>
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<Reference Include="System" />
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<Reference Include="System.Data" />
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<Reference Include="System.Xml" />
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<Reference Include="Microsoft.CSharp" />
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<Reference Include="System.Core" />
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<Reference Include="System.Xml.Linq" />
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<Reference Include="System.Data.DataSetExtensions" />
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<Reference Include="System.Net.Http" />
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<Reference Include="System.Xaml">
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<RequiredTargetFramework>4.0</RequiredTargetFramework>
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</Reference>
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<Reference Include="WindowsBase" />
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<Reference Include="PresentationCore" />
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<Reference Include="PresentationFramework" />
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</ItemGroup>
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<ItemGroup>
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<ApplicationDefinition Include="App.xaml">
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<Generator>MSBuild:Compile</Generator>
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<SubType>Designer</SubType>
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</ApplicationDefinition>
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<Compile Include="ViewModel\MusicInfoRepository.cs" />
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<Compile Include="Command\OnDemandCommand.cs" />
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<Page Include="LoadOnDemand.xaml">
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<Generator>MSBuild:Compile</Generator>
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<SubType>Designer</SubType>
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</Page>
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<Compile Include="App.xaml.cs">
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<DependentUpon>App.xaml</DependentUpon>
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<SubType>Code</SubType>
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</Compile>
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<Compile Include="LoadOnDemand.xaml.cs">
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<DependentUpon>LoadOnDemand.xaml</DependentUpon>
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<SubType>Code</SubType>
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</Compile>
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</ItemGroup>
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<ItemGroup>
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<Compile Include="Model\MusicInfo.cs" />
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<Compile Include="Properties\AssemblyInfo.cs">
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<SubType>Code</SubType>
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</Compile>
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<Compile Include="Properties\Resources.Designer.cs">
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<AutoGen>True</AutoGen>
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<DesignTime>True</DesignTime>
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<DependentUpon>Resources.resx</DependentUpon>
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</Compile>
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<Compile Include="Properties\Settings.Designer.cs">
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<AutoGen>True</AutoGen>
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<DependentUpon>Settings.settings</DependentUpon>
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<DesignTimeSharedInput>True</DesignTimeSharedInput>
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</Compile>
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<EmbeddedResource Include="Properties\Resources.resx">
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<Generator>ResXFileCodeGenerator</Generator>
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<LastGenOutput>Resources.Designer.cs</LastGenOutput>
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</EmbeddedResource>
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<None Include="Properties\Settings.settings">
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<Generator>SettingsSingleFileGenerator</Generator>
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<LastGenOutput>Settings.Designer.cs</LastGenOutput>
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</None>
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</ItemGroup>
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<ItemGroup>
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<None Include="App.config" />
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</ItemGroup>
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<ItemGroup>
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<Resource Include="App.ico" />
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</ItemGroup>
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<Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
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<ItemGroup>
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<Reference Include="Syncfusion.Licensing" />
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</ItemGroup>
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</Project>

‎LoadOnDemand/LoadOnDemandDemo_2010.sln‎

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Microsoft Visual Studio Solution File, Format Version 12.00
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# Visual Studio 2010
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Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "LoadOnDemandDemo_2010", "LoadOnDemandDemo_2010.csproj", "{32C01585-2D4A-4D70-A995-83DEAD479CF6}"
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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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Debug-Xml|Any CPU = Debug-Xml|Any CPU
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Release|Any CPU = Release|Any CPU
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Release-Xml|Any CPU = Release-Xml|Any CPU
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EndGlobalSection
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GlobalSection(ProjectConfigurationPlatforms) = postSolution
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{3BC5F7F2-64B9-4F32-934D-BA0026BA85E7}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
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{3BC5F7F2-64B9-4F32-934D-BA0026BA85E7}.Debug|Any CPU.Build.0 = Debug|Any CPU
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{3BC5F7F2-64B9-4F32-934D-BA0026BA85E7}.Debug-Xml|Any CPU.ActiveCfg = Debug|Any CPU
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{3BC5F7F2-64B9-4F32-934D-BA0026BA85E7}.Debug-Xml|Any CPU.Build.0 = Debug|Any CPU
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{3BC5F7F2-64B9-4F32-934D-BA0026BA85E7}.Release|Any CPU.ActiveCfg = Release|Any CPU
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{3BC5F7F2-64B9-4F32-934D-BA0026BA85E7}.Release|Any CPU.Build.0 = Release|Any CPU
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{3BC5F7F2-64B9-4F32-934D-BA0026BA85E7}.Release-Xml|Any CPU.ActiveCfg = Release|Any CPU
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{3BC5F7F2-64B9-4F32-934D-BA0026BA85E7}.Release-Xml|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 = {83543171-DAA1-4E4D-8E1F-70EB2EFAF2A4}
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EndGlobalSection
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EndGlobal

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