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899026 - Added sample to search and highlight all occurrences of text on desired page in PdfViewer
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‎Text-Operations-Examples/FindAndHighlightTextInDesiredPage/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=v4.8" />
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</startup>
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</configuration>

‎Text-Operations-Examples/FindAndHighlightTextInDesiredPage/App.xaml

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<Application x:Class="FindAndHighlightTextInDesiredPage.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:FindAndHighlightTextInDesiredPage"
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StartupUri="MainWindow.xaml">
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<Application.Resources>
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</Application.Resources>
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</Application>

‎Text-Operations-Examples/FindAndHighlightTextInDesiredPage/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 FindAndHighlightTextInDesiredPage
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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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}

‎Text-Operations-Examples/FindAndHighlightTextInDesiredPage/Data/F#.pdf

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‎Text-Operations-Examples/FindAndHighlightTextInDesiredPage/FindAndHighlightTextInDesiredPage.csproj

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<?xml version="1.0" encoding="utf-8"?>
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<Project ToolsVersion="15.0" 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>{2623E934-BB50-4A59-9E83-FBBFC2E01823}</ProjectGuid>
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<OutputType>WinExe</OutputType>
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<RootNamespace>FindAndHighlightTextInDesiredPage</RootNamespace>
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<AssemblyName>FindAndHighlightTextInDesiredPage</AssemblyName>
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<TargetFrameworkVersion>v4.8</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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<TargetFrameworkProfile />
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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="System" />
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<packageReference Include="Syncfusion.PdfViewer.WPF" version="*" />
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<Reference Include="System.Data" />
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<Reference Include="System.Drawing" />
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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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<Page Include="MainWindow.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="MainWindow.xaml.cs">
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<DependentUpon>MainWindow.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="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="packages.config" />
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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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<PackageReference Include="Syncfusion.PdfViewer.WPF">
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<Version>29.2.4</Version>
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</PackageReference>
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</ItemGroup>
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<Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
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</Project>

‎Text-Operations-Examples/FindAndHighlightTextInDesiredPage/FindAndHighlightTextInDesiredPage.sln

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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 = 17.12.35707.178 d17.12
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MinimumVisualStudioVersion = 10.0.40219.1
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Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "FindAndHighlightTextInDesiredPage", "FindAndHighlightTextInDesiredPage.csproj", "{2623E934-BB50-4A59-9E83-FBBFC2E01823}"
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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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{2623E934-BB50-4A59-9E83-FBBFC2E01823}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
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{2623E934-BB50-4A59-9E83-FBBFC2E01823}.Debug|Any CPU.Build.0 = Debug|Any CPU
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{2623E934-BB50-4A59-9E83-FBBFC2E01823}.Release|Any CPU.ActiveCfg = Release|Any CPU
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{2623E934-BB50-4A59-9E83-FBBFC2E01823}.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

‎Text-Operations-Examples/FindAndHighlightTextInDesiredPage/FindAndHighlightTextInDesiredPage_NET.csproj

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<Project Sdk="Microsoft.NET.Sdk">
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<PropertyGroup>
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<OutputType>WinExe</OutputType>
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<TargetFramework>net8.0-windows</TargetFramework>
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<Nullable>enable</Nullable>
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<ImplicitUsings>enable</ImplicitUsings>
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<UseWPF>true</UseWPF>
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</PropertyGroup>
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<ItemGroup>
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<PackageReference Include="Syncfusion.PdfViewer.WPF" Version="*" />
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</ItemGroup>
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</Project>

‎Text-Operations-Examples/FindAndHighlightTextInDesiredPage/FindAndHighlightTextInDesiredPage_NET.sln

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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 = 17.12.35707.178 d17.12
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MinimumVisualStudioVersion = 10.0.40219.1
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Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "FindAndHighlightTextInDesiredPage_NET", "FindAndHighlightTextInDesiredPage_NET.csproj", "{9473EACC-57B8-468E-A626-8638F9AB5093}"
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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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{9473EACC-57B8-468E-A626-8638F9AB5093}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
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{9473EACC-57B8-468E-A626-8638F9AB5093}.Debug|Any CPU.Build.0 = Debug|Any CPU
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{9473EACC-57B8-468E-A626-8638F9AB5093}.Release|Any CPU.ActiveCfg = Release|Any CPU
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{9473EACC-57B8-468E-A626-8638F9AB5093}.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

‎Text-Operations-Examples/FindAndHighlightTextInDesiredPage/MainWindow.xaml

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<Window x:Class="FindAndHighlightTextInDesiredPage.MainWindow"
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xmlns:PdfViewer="clr-namespace:Syncfusion.Windows.PdfViewer;assembly=Syncfusion.PdfViewer.WPF"
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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:FindAndHighlightTextInDesiredPage"
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mc:Ignorable="d"
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Title="MainWindow" Height="450" Width="800">
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<Grid>
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<Grid.RowDefinitions>
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<RowDefinition Height="30" />
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<RowDefinition Height="*" />
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</Grid.RowDefinitions>
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<Button x:Name="Find" Content="Find Text" Width="80" Click="Find_Click" />
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<PdfViewer:PdfViewerControl x:Name="pdfViewer" Grid.Row="1" />
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</Grid>
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</Window>

‎Text-Operations-Examples/FindAndHighlightTextInDesiredPage/MainWindow.xaml.cs

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using Syncfusion.Pdf;
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using Syncfusion.Pdf.Interactive;
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using System;
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using System.Collections.Generic;
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using System.Drawing;
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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 FindAndHighlightTextInDesiredPage
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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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string file;
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int desiredPageIndex = 1;
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public MainWindow()
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{
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InitializeComponent();
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this.WindowState = WindowState.Maximized;
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#if NETCOREAPP
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file = "../../../Data/F#.pdf";
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#else
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file = "../../Data/F#.pdf";
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#endif
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//Load the document
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pdfViewer.Load(file);
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}
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private void Find_Click(object sender, RoutedEventArgs e)
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{
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//Navigating to desired page
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pdfViewer.GotoPage(desiredPageIndex + 1);
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//To store the occurrences of the text found in the page
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List<RectangleF> textbounds = new List<RectangleF>();
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//Find the text in the specific page returns true if the text is found in the particular page
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bool isMatchFound = pdfViewer.FindText("F#", desiredPageIndex, out textbounds);
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if (isMatchFound)
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{
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foreach(RectangleF rect in textbounds)
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{
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//Creating the markup annotation
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PdfTextMarkupAnnotation markUpannotation = new PdfTextMarkupAnnotation(rect);
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PdfLoadedPage page = pdfViewer.LoadedDocument.Pages[desiredPageIndex] as PdfLoadedPage;
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//Asigning the type of Text Mark up annotation
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markUpannotation.TextMarkupAnnotationType = PdfTextMarkupAnnotationType.Highlight;
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//Adding the mark up annotation to the particular page
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page.Annotations.Add(markUpannotation);
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}
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}
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}
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}
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}

‎Text-Operations-Examples/FindAndHighlightTextInDesiredPage/Properties/AssemblyInfo.cs

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using System.Reflection;
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using System.Resources;
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using System.Runtime.CompilerServices;
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using System.Runtime.InteropServices;
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using System.Windows;
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// General Information about an assembly is controlled through the following
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// set of attributes. Change these attribute values to modify the information
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// associated with an assembly.
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[assembly: AssemblyDescription("")]
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[assembly: AssemblyCopyright("Copyright © 2025")]
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[assembly: AssemblyTrademark("")]
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[assembly: AssemblyCulture("")]
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// Setting ComVisible to false makes the types in this assembly not visible
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// to COM components. If you need to access a type in this assembly from
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// COM, set the ComVisible attribute to true on that type.
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[assembly: ComVisible(false)]
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//In order to begin building localizable applications, set
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//<UICulture>CultureYouAreCodingWith</UICulture> in your .csproj file
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//inside a <PropertyGroup>. For example, if you are using US english
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//in your source files, set the <UICulture> to en-US. Then uncomment
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//the NeutralResourceLanguage attribute below. Update the "en-US" in
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//the line below to match the UICulture setting in the project file.
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//[assembly: NeutralResourcesLanguage("en-US", UltimateResourceFallbackLocation.Satellite)]
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[assembly: ThemeInfo(
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ResourceDictionaryLocation.None, //where theme specific resource dictionaries are located
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//(used if a resource is not found in the page,
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// or application resource dictionaries)
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ResourceDictionaryLocation.SourceAssembly //where the generic resource dictionary is located
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//(used if a resource is not found in the page,
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// app, or any theme specific resource dictionaries)
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)]
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// Version information for an assembly consists of the following four values:
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//
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// Major Version
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// Minor Version
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// Build Number
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// Revision
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//

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