Added sample demonstrating manual graph call

Samples/ManualGraphRequestSample/App.xaml

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+<Application
+    x:Class="ManualGraphRequestSample.App"
+    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+    xmlns:local="using:ManualGraphRequestSample">
+
+</Application>

Samples/ManualGraphRequestSample/App.xaml.cs

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+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+using Windows.ApplicationModel.Activation;
+using Windows.UI.Xaml;
+using Windows.UI.Xaml.Controls;
+
+namespace ManualGraphRequestSample
+{
+    sealed partial class App : Application
+    {
+
+        public App()
+        {
+            InitializeComponent();
+        }
+
+        protected override void OnLaunched(LaunchActivatedEventArgs e)
+        {
+            Frame rootFrame = Window.Current.Content as Frame;
+            if (rootFrame == null)
+            {
+                rootFrame = new Frame();
+                Window.Current.Content = rootFrame;
+            }
+
+            if (e.PrelaunchActivated == false)
+            {
+                if (rootFrame.Content == null)
+                {
+                    rootFrame.Navigate(typeof(MainPage), e.Arguments);
+                }
+                Window.Current.Activate();
+            }
+        }
+    }
+}

Samples/ManualGraphRequestSample/MainPage.xaml

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+<Page
+    x:Class="ManualGraphRequestSample.MainPage"
+    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:local="using:ManualGraphRequestSample"
+    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
+    xmlns:models="using:ManualGraphRequestSample.Models"
+    Background="{ThemeResource ApplicationPageBackgroundThemeBrush}"
+    mc:Ignorable="d">
+
+    <Grid ColumnSpacing="24">
+        <Grid.ColumnDefinitions>
+            <ColumnDefinition />
+            <ColumnDefinition />
+        </Grid.ColumnDefinitions>
+
+        <StackPanel
+            HorizontalAlignment="Right"
+            VerticalAlignment="Center"
+            Orientation="Horizontal">
+            <Button
+                x:Name="SignInButton"
+                VerticalAlignment="Center"
+                Click="OnSignInButtonClick"
+                Content="Sign In" />
+            <ProgressRing
+                x:Name="SignInLoadingRing"
+                Width="24"
+                Height="24"
+                Margin="8,0,0,0"
+                VerticalAlignment="Center"
+                IsActive="False" />
+        </StackPanel>
+
+
+        <ListView
+            Grid.Column="1"
+            Width="300"
+            HorizontalAlignment="Left"
+            VerticalAlignment="Center"
+            ItemsSource="{x:Bind TaskCollection}">
+            <ListView.ItemContainerStyle>
+                <Style TargetType="ListViewItem">
+                    <Setter Property="HorizontalContentAlignment" Value="Stretch" />
+                    <Setter Property="VerticalContentAlignment" Value="Stretch" />
+                </Style>
+            </ListView.ItemContainerStyle>
+            <ListView.ItemTemplate>
+                <DataTemplate x:DataType="models:TodoTask">
+                    <Grid Padding="12,8">
+                        <TextBlock Text="{x:Bind Title}" TextTrimming="CharacterEllipsis" />
+                    </Grid>
+                </DataTemplate>
+            </ListView.ItemTemplate>
+        </ListView>
+    </Grid>
+</Page>

Samples/ManualGraphRequestSample/MainPage.xaml.cs

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+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+using CommunityToolkit.Authentication;
+using ManualGraphRequestSample.Models;
+using Newtonsoft.Json;
+using Newtonsoft.Json.Linq;
+using System.Collections.Generic;
+using System.Collections.ObjectModel;
+using System.Net.Http;
+using System.Threading.Tasks;
+using Windows.UI.Xaml;
+using Windows.UI.Xaml.Controls;
+
+namespace ManualGraphRequestSample
+{
+    public sealed partial class MainPage : Page
+    {
+        public ObservableCollection<TodoTask> TaskCollection = new ObservableCollection<TodoTask>();
+
+        public MainPage()
+        {
+            InitializeComponent();
+
+            ProviderManager.Instance.ProviderUpdated += OnProviderUpdated;
+            ProviderManager.Instance.GlobalProvider = new WindowsProvider(new string[] { "User.Read", "Tasks.ReadWrite" });
+        }
+
+        private async void OnProviderUpdated(object sender, ProviderUpdatedEventArgs e)
+        {
+            IProvider provider = ProviderManager.Instance.GlobalProvider;
+
+            switch (provider?.State)
+            {
+                case ProviderState.Loading:
+                    SignInButton.Content = "Loading...";
+                    SignInLoadingRing.IsActive = true;
+                    SignInButton.IsEnabled = false;
+                    break;
+
+                case ProviderState.SignedOut:
+                    SignInButton.Content = "Sign In";
+                    SignInLoadingRing.IsActive = false;
+                    SignInButton.IsEnabled = true;
+
+                    TaskCollection.Clear();
+                    break;
+
+                case ProviderState.SignedIn:
+                    SignInButton.Content = "Sign Out";
+                    SignInLoadingRing.IsActive = false;
+                    SignInButton.IsEnabled = true;
+
+                    IList<TodoTask> tasks = await GetDefaultTaskListAsync();
+                    if (tasks != null)
+                    {
+                        foreach (var task in tasks)
+                        {
+                            TaskCollection.Add(task);
+                        }
+                    }
+                    break;
+            }
+        }
+
+        private async void OnSignInButtonClick(object sender, RoutedEventArgs e)
+        {
+            IProvider provider = ProviderManager.Instance.GlobalProvider;
+            if (provider?.State == ProviderState.SignedOut)
+            {
+                await ProviderManager.Instance.GlobalProvider.SignInAsync();
+            }
+            else if (provider?.State == ProviderState.SignedIn)
+            {
+                await ProviderManager.Instance.GlobalProvider.SignOutAsync();
+            }
+        }
+
+        private async Task<IList<TodoTask>> GetDefaultTaskListAsync()
+        {
+            var httpClient = new HttpClient();
+            var requestUri = "https://graph.microsoft.com/v1.0/me/todo/lists/tasks/tasks";
+
+            var getRequest = new HttpRequestMessage(HttpMethod.Get, requestUri);
+            await ProviderManager.Instance.GlobalProvider.AuthenticateRequestAsync(getRequest);
+
+            using (httpClient)
+            {
+                var response = await httpClient.SendAsync(getRequest);
+
+                if (response.IsSuccessStatusCode)
+                {
+                    var jsonResponse = await response.Content.ReadAsStringAsync();
+                    var jObject = JObject.Parse(jsonResponse);
+                    if (jObject.ContainsKey("value"))
+                    {
+                        var tasks = JsonConvert.DeserializeObject<List<TodoTask>>(jObject["value"].ToString());
+                        return tasks;
+                    }
+                }
+            }
+
+            return null;
+        }
+    }
+}

Samples/ManualGraphRequestSample/ManualGraphRequestSample.csproj

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+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="15.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">x86</Platform>
+    <ProjectGuid>{192CC7FD-408D-4B0B-9032-AD06C7BE46C6}</ProjectGuid>
+    <OutputType>AppContainerExe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <RootNamespace>ManualGraphRequestSample</RootNamespace>
+    <AssemblyName>ManualGraphRequestSample</AssemblyName>
+    <DefaultLanguage>en-US</DefaultLanguage>
+    <TargetPlatformIdentifier>UAP</TargetPlatformIdentifier>
+    <TargetPlatformVersion Condition=" '$(TargetPlatformVersion)' == '' ">10.0.19041.0</TargetPlatformVersion>
+    <TargetPlatformMinVersion>10.0.17763.0</TargetPlatformMinVersion>
+    <MinimumVisualStudioVersion>14</MinimumVisualStudioVersion>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{A5A43C5B-DE2A-4C0C-9213-0A381AF9435A};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <WindowsXamlEnableOverview>true</WindowsXamlEnableOverview>
+    <AppxPackageSigningEnabled>false</AppxPackageSigningEnabled>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'Debug|x86'">
+    <DebugSymbols>true</DebugSymbols>
+    <OutputPath>bin\x86\Debug\</OutputPath>
+    <DefineConstants>DEBUG;TRACE;NETFX_CORE;WINDOWS_UWP</DefineConstants>
+    <NoWarn>;2008</NoWarn>
+    <DebugType>full</DebugType>
+    <PlatformTarget>x86</PlatformTarget>
+    <UseVSHostingProcess>false</UseVSHostingProcess>
+    <ErrorReport>prompt</ErrorReport>
+    <Prefer32Bit>true</Prefer32Bit>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'Release|x86'">
+    <OutputPath>bin\x86\Release\</OutputPath>
+    <DefineConstants>TRACE;NETFX_CORE;WINDOWS_UWP</DefineConstants>
+    <Optimize>true</Optimize>
+    <NoWarn>;2008</NoWarn>
+    <DebugType>pdbonly</DebugType>
+    <PlatformTarget>x86</PlatformTarget>
+    <UseVSHostingProcess>false</UseVSHostingProcess>
+    <ErrorReport>prompt</ErrorReport>
+    <Prefer32Bit>true</Prefer32Bit>
+    <UseDotNetNativeToolchain>true</UseDotNetNativeToolchain>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'Debug|ARM'">
+    <DebugSymbols>true</DebugSymbols>
+    <OutputPath>bin\ARM\Debug\</OutputPath>
+    <DefineConstants>DEBUG;TRACE;NETFX_CORE;WINDOWS_UWP</DefineConstants>
+    <NoWarn>;2008</NoWarn>
+    <DebugType>full</DebugType>
+    <PlatformTarget>ARM</PlatformTarget>
+    <UseVSHostingProcess>false</UseVSHostingProcess>
+    <ErrorReport>prompt</ErrorReport>
+    <Prefer32Bit>true</Prefer32Bit>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'Release|ARM'">
+    <OutputPath>bin\ARM\Release\</OutputPath>
+    <DefineConstants>TRACE;NETFX_CORE;WINDOWS_UWP</DefineConstants>
+    <Optimize>true</Optimize>
+    <NoWarn>;2008</NoWarn>
+    <DebugType>pdbonly</DebugType>
+    <PlatformTarget>ARM</PlatformTarget>
+    <UseVSHostingProcess>false</UseVSHostingProcess>
+    <ErrorReport>prompt</ErrorReport>
+    <Prefer32Bit>true</Prefer32Bit>
+    <UseDotNetNativeToolchain>true</UseDotNetNativeToolchain>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'Debug|ARM64'">
+    <DebugSymbols>true</DebugSymbols>
+    <OutputPath>bin\ARM64\Debug\</OutputPath>
+    <DefineConstants>DEBUG;TRACE;NETFX_CORE;WINDOWS_UWP</DefineConstants>
+    <NoWarn>;2008</NoWarn>
+    <DebugType>full</DebugType>
+    <PlatformTarget>ARM64</PlatformTarget>
+    <UseVSHostingProcess>false</UseVSHostingProcess>
+    <ErrorReport>prompt</ErrorReport>
+    <Prefer32Bit>true</Prefer32Bit>
+    <UseDotNetNativeToolchain>true</UseDotNetNativeToolchain>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'Release|ARM64'">
+    <OutputPath>bin\ARM64\Release\</OutputPath>
+    <DefineConstants>TRACE;NETFX_CORE;WINDOWS_UWP</DefineConstants>
+    <Optimize>true</Optimize>
+    <NoWarn>;2008</NoWarn>
+    <DebugType>pdbonly</DebugType>
+    <PlatformTarget>ARM64</PlatformTarget>
+    <UseVSHostingProcess>false</UseVSHostingProcess>
+    <ErrorReport>prompt</ErrorReport>
+    <Prefer32Bit>true</Prefer32Bit>
+    <UseDotNetNativeToolchain>true</UseDotNetNativeToolchain>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'Debug|x64'">
+    <DebugSymbols>true</DebugSymbols>
+    <OutputPath>bin\x64\Debug\</OutputPath>
+    <DefineConstants>DEBUG;TRACE;NETFX_CORE;WINDOWS_UWP</DefineConstants>
+    <NoWarn>;2008</NoWarn>
+    <DebugType>full</DebugType>
+    <PlatformTarget>x64</PlatformTarget>
+    <UseVSHostingProcess>false</UseVSHostingProcess>
+    <ErrorReport>prompt</ErrorReport>
+    <Prefer32Bit>true</Prefer32Bit>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'Release|x64'">
+    <OutputPath>bin\x64\Release\</OutputPath>
+    <DefineConstants>TRACE;NETFX_CORE;WINDOWS_UWP</DefineConstants>
+    <Optimize>true</Optimize>
+    <NoWarn>;2008</NoWarn>
+    <DebugType>pdbonly</DebugType>
+    <PlatformTarget>x64</PlatformTarget>
+    <UseVSHostingProcess>false</UseVSHostingProcess>
+    <ErrorReport>prompt</ErrorReport>
+    <Prefer32Bit>true</Prefer32Bit>
+    <UseDotNetNativeToolchain>true</UseDotNetNativeToolchain>
+  </PropertyGroup>
+  <PropertyGroup>
+    <RestoreProjectStyle>PackageReference</RestoreProjectStyle>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="App.xaml.cs">
+      <DependentUpon>App.xaml</DependentUpon>
+    </Compile>
+    <Compile Include="MainPage.xaml.cs">
+      <DependentUpon>MainPage.xaml</DependentUpon>
+    </Compile>
+    <Compile Include="Models\TodoTask.cs" />
+    <Compile Include="Properties\AssemblyInfo.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <AppxManifest Include="Package.appxmanifest">
+      <SubType>Designer</SubType>
+    </AppxManifest>
+  </ItemGroup>
+  <ItemGroup>
+    <Content Include="Properties\Default.rd.xml" />
+    <Content Include="Assets\LockScreenLogo.scale-200.png" />
+    <Content Include="Assets\SplashScreen.scale-200.png" />
+    <Content Include="Assets\Square150x150Logo.scale-200.png" />
+    <Content Include="Assets\Square44x44Logo.scale-200.png" />
+    <Content Include="Assets\Square44x44Logo.targetsize-24_altform-unplated.png" />
+    <Content Include="Assets\StoreLogo.png" />
+    <Content Include="Assets\Wide310x150Logo.scale-200.png" />
+  </ItemGroup>
+  <ItemGroup>
+    <ApplicationDefinition Include="App.xaml">
+      <Generator>MSBuild:Compile</Generator>
+      <SubType>Designer</SubType>
+    </ApplicationDefinition>
+    <Page Include="MainPage.xaml">
+      <Generator>MSBuild:Compile</Generator>
+      <SubType>Designer</SubType>
+    </Page>
+  </ItemGroup>
+  <ItemGroup>
+    <PackageReference Include="Microsoft.NETCore.UniversalWindowsPlatform">
+      <Version>6.2.11</Version>
+    </PackageReference>
+    <PackageReference Include="Newtonsoft.Json">
+      <Version>13.0.1</Version>
+    </PackageReference>
+  </ItemGroup>
+  <ItemGroup>
+    <ProjectReference Include="..\..\CommunityToolkit.Authentication.Uwp\CommunityToolkit.Authentication.Uwp.csproj">
+      <Project>{2e4a708a-df53-4863-b797-e14cdc6b90fa}</Project>
+      <Name>CommunityToolkit.Authentication.Uwp</Name>
+    </ProjectReference>
+    <ProjectReference Include="..\..\CommunityToolkit.Authentication\CommunityToolkit.Authentication.csproj">
+      <Project>{B323A2E1-66EF-4037-95B7-2DEFA051B4B1}</Project>
+      <Name>CommunityToolkit.Authentication</Name>
+    </ProjectReference>
+  </ItemGroup>
+  <PropertyGroup Condition=" '$(VisualStudioVersion)' == '' or '$(VisualStudioVersion)' &lt; '14.0' ">
+    <VisualStudioVersion>14.0</VisualStudioVersion>
+  </PropertyGroup>
+  <Import Project="$(MSBuildExtensionsPath)\Microsoft\WindowsXaml\v$(VisualStudioVersion)\Microsoft.Windows.UI.Xaml.CSharp.targets" />
+  <!-- To modify your build process, add your task inside one of the targets below and uncomment it. 
+       Other similar extension points exist, see Microsoft.Common.targets.
+  <Target Name="BeforeBuild">
+  </Target>
+  <Target Name="AfterBuild">
+  </Target>
+  -->
+</Project>