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attach the KB sample
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Microsoft Visual Studio Solution File, Format Version 12.00
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# Visual Studio Version 17
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VisualStudioVersion = 17.12.35506.116 d17.12
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MinimumVisualStudioVersion = 10.0.40219.1
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Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "TargetLineSample", "TargetLineSample\TargetLineSample.csproj", "{F66D4DD4-16E6-4A19-AF7C-550A29BB9C36}"
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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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{F66D4DD4-16E6-4A19-AF7C-550A29BB9C36}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
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{F66D4DD4-16E6-4A19-AF7C-550A29BB9C36}.Debug|Any CPU.Build.0 = Debug|Any CPU
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{F66D4DD4-16E6-4A19-AF7C-550A29BB9C36}.Release|Any CPU.ActiveCfg = Release|Any CPU
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{F66D4DD4-16E6-4A19-AF7C-550A29BB9C36}.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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EndGlobal
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<?xml version = "1.0" encoding = "UTF-8" ?>
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<Application xmlns="http://schemas.microsoft.com/dotnet/2021/maui"
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xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
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xmlns:local="clr-namespace:TargetLineSample"
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x:Class="TargetLineSample.App">
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<Application.Resources>
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<ResourceDictionary>
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<ResourceDictionary.MergedDictionaries>
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<ResourceDictionary Source="Resources/Styles/Colors.xaml" />
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<ResourceDictionary Source="Resources/Styles/Styles.xaml" />
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</ResourceDictionary.MergedDictionaries>
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</ResourceDictionary>
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</Application.Resources>
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</Application>
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namespace TargetLineSample
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{
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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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InitializeComponent();
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}
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protected override Window CreateWindow(IActivationState? activationState)
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{
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return new Window(new AppShell());
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}
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}
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}
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<?xml version="1.0" encoding="UTF-8" ?>
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<Shell
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x:Class="TargetLineSample.AppShell"
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xmlns="http://schemas.microsoft.com/dotnet/2021/maui"
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xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
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xmlns:local="clr-namespace:TargetLineSample"
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Shell.FlyoutBehavior="Flyout"
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Title="TargetLineSample">
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<ShellContent
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Title="Home"
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ContentTemplate="{DataTemplate local:MainPage}"
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Route="MainPage" />
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</Shell>
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namespace TargetLineSample
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{
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public partial class AppShell : Shell
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{
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public AppShell()
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{
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InitializeComponent();
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}
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}
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}
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<?xml version="1.0" encoding="utf-8" ?>
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<ContentPage xmlns="http://schemas.microsoft.com/dotnet/2021/maui"
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xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
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xmlns:chart="clr-namespace:Syncfusion.Maui.Charts;assembly=Syncfusion.Maui.Charts"
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xmlns:local="clr-namespace:TargetLineSample"
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x:Class="TargetLineSample.MainPage">
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<Grid>
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<Grid.ColumnDefinitions>
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<ColumnDefinition Width="*"></ColumnDefinition>
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<ColumnDefinition Width="200"></ColumnDefinition>
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</Grid.ColumnDefinitions>
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<Grid.BindingContext>
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<local:ViewModel x:Name="viewModel"/>
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</Grid.BindingContext>
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<chart:SfCartesianChart Grid.Column="0">
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<chart:SfCartesianChart.XAxes>
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<chart:CategoryAxis ShowMajorGridLines="False">
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<chart:CategoryAxis.Title>
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<chart:ChartAxisTitle Text="Months"/>
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</chart:CategoryAxis.Title>
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</chart:CategoryAxis>
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</chart:SfCartesianChart.XAxes>
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<chart:SfCartesianChart.YAxes>
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<chart:NumericalAxis x:Name="Y_Axis" Minimum="0" Maximum="20000" Interval="5000" ShowMajorGridLines="False">
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<chart:NumericalAxis.Title>
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<chart:ChartAxisTitle Text="Revenue"/>
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</chart:NumericalAxis.Title>
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<chart:NumericalAxis.LabelStyle>
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<chart:ChartAxisLabelStyle LabelFormat="'$'0"/>
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</chart:NumericalAxis.LabelStyle>
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</chart:NumericalAxis>
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</chart:SfCartesianChart.YAxes>
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<chart:SfCartesianChart.Annotations>
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<chart:HorizontalLineAnnotation Y1="{Binding Y1}"
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Stroke="Black"
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StrokeWidth="2"
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StrokeDashArray="5,2,2"
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Text="Target">
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<chart:HorizontalLineAnnotation.LabelStyle>
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<chart:ChartAnnotationLabelStyle TextColor="Black" FontSize="14" FontAttributes="Bold" HorizontalTextAlignment="Start" VerticalTextAlignment="Start"/>
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</chart:HorizontalLineAnnotation.LabelStyle>
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</chart:HorizontalLineAnnotation>
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</chart:SfCartesianChart.Annotations>
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<chart:ColumnSeries ItemsSource="{Binding Data}"
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XBindingPath="Months"
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YBindingPath="Revenue"
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PaletteBrushes="{Binding CustomBrushes}"
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Opacity="0.7"/>
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</chart:SfCartesianChart>
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<VerticalStackLayout Spacing="5" Grid.Column="1" Padding="10">
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<Label Text="Adjust Target Line" FontSize="16" FontAttributes="Bold" HorizontalOptions="Center"/>
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<Entry Text="{Binding Y1}" Keyboard="Numeric" TextChanged="Entry_TextChanged"/>
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<Slider Minimum="{Binding Minimum, Source={x:Reference Y_Axis}}" Maximum="{Binding Maximum, Source={x:Reference Y_Axis}}" Value="{Binding Y1}"/>
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</VerticalStackLayout>
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</Grid>
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</ContentPage>
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using Syncfusion.Maui.Charts;
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namespace TargetLineSample
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{
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public partial class MainPage : ContentPage
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{
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public MainPage()
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{
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InitializeComponent();
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}
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private void Entry_TextChanged(object sender, TextChangedEventArgs e)
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{
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if(Y_Axis == null) return;
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var maxValue = Y_Axis.Maximum;
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if (sender is Entry entry)
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{
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if (string.IsNullOrWhiteSpace(entry.Text))
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{
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entry.Text = string.Empty;
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}
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else
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{
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if (double.TryParse(e.NewTextValue, out double newValue))
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{
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if (newValue > maxValue)
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{
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entry.Text = e.OldTextValue;
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}
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}
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else
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{
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entry.Text = e.OldTextValue;
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}
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}
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}
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}
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}
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}
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using Microsoft.Extensions.Logging;
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using Syncfusion.Maui.Core.Hosting;
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namespace TargetLineSample
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{
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public static class MauiProgram
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{
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public static MauiApp CreateMauiApp()
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{
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var builder = MauiApp.CreateBuilder();
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builder.ConfigureSyncfusionCore();
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builder
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.UseMauiApp<App>()
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.ConfigureFonts(fonts =>
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{
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fonts.AddFont("OpenSans-Regular.ttf", "OpenSansRegular");
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fonts.AddFont("OpenSans-Semibold.ttf", "OpenSansSemibold");
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});
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#if DEBUG
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builder.Logging.AddDebug();
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#endif
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return builder.Build();
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}
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}
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}
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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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namespace TargetLineSample
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{
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internal class Model
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{
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public string? Months { get; set; }
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public double Revenue { get; set; }
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}
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}
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<?xml version="1.0" encoding="utf-8"?>
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<manifest xmlns:android="http://schemas.android.com/apk/res/android">
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<application android:allowBackup="true" android:icon="@mipmap/appicon" android:roundIcon="@mipmap/appicon_round" android:supportsRtl="true"></application>
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<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
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<uses-permission android:name="android.permission.INTERNET" />
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</manifest>

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