RPA Robotic Process Automation – Parse Invoice – C#

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RPA Robotic Process Automation – Parse Invoice – C#

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How to parse invoice in C# and ByteScout Robotic Process Automation

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InvoiceParsing.VS2005.csproj

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    <AssemblyName>InvoiceParsing</AssemblyName>
    <FileAlignment>512</FileAlignment>
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  <ItemGroup>
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    <Reference Include="System.Data" />
    <Reference Include="System.Drawing" />
    <Reference Include="System.Xml" />
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    <Compile Include="Properties\AssemblyInfo.cs" />
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      <CopyToOutputDirectory>Always</CopyToOutputDirectory>
    </Content>
  </ItemGroup>
  <Import Project="$(MSBuildBinPath)\Microsoft.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">
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InvoiceParsing.VS2008.csproj

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    <OutputType>Exe</OutputType>
    <AppDesignerFolder>Properties</AppDesignerFolder>
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    <AssemblyName>InvoiceParsing</AssemblyName>
    <TargetFrameworkVersion>v2.0</TargetFrameworkVersion>
    <FileAlignment>512</FileAlignment>
    <ProductVersion>9.0.30729</ProductVersion>
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  <ItemGroup>
    <Reference Include="Bytescout.PDFExtractor, Version=6.30.0.2431, Culture=neutral, PublicKeyToken=f7dd1bd9d40a50eb, processorArchitecture=MSIL">
      <SpecificVersion>False</SpecificVersion>
      <HintPath>C:\Program Files\Bytescout PDF Extractor SDK\net2.00\Bytescout.PDFExtractor.dll</HintPath>
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    <Reference Include="System" />
    <Reference Include="System.Data" />
    <Reference Include="System.Drawing" />
    <Reference Include="System.Xml" />
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    </Content>
  </ItemGroup>
  <Import Project="$(MSBuildToolsPath)\Microsoft.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>
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InvoiceParsing.VS2010.csproj

      <?xml version="1.0" encoding="utf-8"?>
<Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
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    <DefineConstants>TRACE</DefineConstants>
    <ErrorReport>prompt</ErrorReport>
    <WarningLevel>4</WarningLevel>
  </PropertyGroup>
  <ItemGroup>
    <Reference Include="Bytescout.PDFExtractor, Version=6.30.0.2431, Culture=neutral, PublicKeyToken=f7dd1bd9d40a50eb, processorArchitecture=MSIL">
      <SpecificVersion>False</SpecificVersion>
      <HintPath>C:\Program Files\Bytescout PDF Extractor SDK\net2.00\Bytescout.PDFExtractor.dll</HintPath>
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    <Reference Include="System.Data" />
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    <Reference Include="System.Xml" />
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  </ItemGroup>
  <Import Project="$(MSBuildToolsPath)\Microsoft.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>
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</Project>

InvoiceParsing.VS2012.csproj

      <?xml version="1.0" encoding="utf-8"?>
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    <OutputType>Exe</OutputType>
    <AppDesignerFolder>Properties</AppDesignerFolder>
    <RootNamespace>InvoiceParsing</RootNamespace>
    <AssemblyName>InvoiceParsing</AssemblyName>
    <TargetFrameworkVersion>v4.0</TargetFrameworkVersion>
    <FileAlignment>512</FileAlignment>
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  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
    <PlatformTarget>AnyCPU</PlatformTarget>
    <DebugSymbols>true</DebugSymbols>
    <DebugType>full</DebugType>
    <Optimize>false</Optimize>
    <OutputPath>bin\Debug\</OutputPath>
    <DefineConstants>DEBUG;TRACE</DefineConstants>
    <ErrorReport>prompt</ErrorReport>
    <WarningLevel>4</WarningLevel>
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  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
    <PlatformTarget>AnyCPU</PlatformTarget>
    <DebugType>pdbonly</DebugType>
    <Optimize>true</Optimize>
    <OutputPath>bin\Release\</OutputPath>
    <DefineConstants>TRACE</DefineConstants>
    <ErrorReport>prompt</ErrorReport>
    <WarningLevel>4</WarningLevel>
  </PropertyGroup>
  <ItemGroup>
    <Reference Include="Bytescout.PDFExtractor, Version=6.30.0.2431, Culture=neutral, PublicKeyToken=f7dd1bd9d40a50eb, processorArchitecture=MSIL">
      <SpecificVersion>False</SpecificVersion>
      <HintPath>C:\Program Files\Bytescout PDF Extractor SDK\net2.00\Bytescout.PDFExtractor.dll</HintPath>
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    <Reference Include="System" />
    <Reference Include="System.Data" />
    <Reference Include="System.Drawing" />
    <Reference Include="System.Xml" />
  </ItemGroup>
  <ItemGroup>
    <Compile Include="Program.cs" />
    <Compile Include="Properties\AssemblyInfo.cs" />
  </ItemGroup>
  <ItemGroup>
    <Content Include="Invoice.pdf">
      <CopyToOutputDirectory>Always</CopyToOutputDirectory>
    </Content>
  </ItemGroup>
  <Import Project="$(MSBuildToolsPath)\Microsoft.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>

InvoiceParsing.VS2013.csproj

      <?xml version="1.0" encoding="utf-8"?>
<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
  <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
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    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
    <ProjectGuid>{BF74D299-912C-4259-A022-71628F76F2B9}</ProjectGuid>
    <OutputType>Exe</OutputType>
    <AppDesignerFolder>Properties</AppDesignerFolder>
    <RootNamespace>InvoiceParsing</RootNamespace>
    <AssemblyName>InvoiceParsing</AssemblyName>
    <TargetFrameworkVersion>v4.0</TargetFrameworkVersion>
    <FileAlignment>512</FileAlignment>
  </PropertyGroup>
  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
    <PlatformTarget>AnyCPU</PlatformTarget>
    <DebugSymbols>true</DebugSymbols>
    <DebugType>full</DebugType>
    <Optimize>false</Optimize>
    <OutputPath>bin\Debug\</OutputPath>
    <DefineConstants>DEBUG;TRACE</DefineConstants>
    <ErrorReport>prompt</ErrorReport>
    <WarningLevel>4</WarningLevel>
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  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
    <PlatformTarget>AnyCPU</PlatformTarget>
    <DebugType>pdbonly</DebugType>
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    <OutputPath>bin\Release\</OutputPath>
    <DefineConstants>TRACE</DefineConstants>
    <ErrorReport>prompt</ErrorReport>
    <WarningLevel>4</WarningLevel>
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  <ItemGroup>
    <Reference Include="Bytescout.PDFExtractor, Version=6.30.0.2431, Culture=neutral, PublicKeyToken=f7dd1bd9d40a50eb, processorArchitecture=MSIL">
      <SpecificVersion>False</SpecificVersion>
      <HintPath>C:\Program Files\Bytescout PDF Extractor SDK\net2.00\Bytescout.PDFExtractor.dll</HintPath>
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    <Reference Include="System" />
    <Reference Include="System.Data" />
    <Reference Include="System.Drawing" />
    <Reference Include="System.Xml" />
  </ItemGroup>
  <ItemGroup>
    <Compile Include="Program.cs" />
    <Compile Include="Properties\AssemblyInfo.cs" />
  </ItemGroup>
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    <Content Include="Invoice.pdf">
      <CopyToOutputDirectory>Always</CopyToOutputDirectory>
    </Content>
  </ItemGroup>
  <Import Project="$(MSBuildToolsPath)\Microsoft.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>
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</Project>

InvoiceParsing.VS2015.csproj

      <?xml version="1.0" encoding="utf-8"?>
<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
  <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
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    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
    <ProjectGuid>{BF74D299-912C-4259-A022-71628F76F2B9}</ProjectGuid>
    <OutputType>Exe</OutputType>
    <AppDesignerFolder>Properties</AppDesignerFolder>
    <RootNamespace>InvoiceParsing</RootNamespace>
    <AssemblyName>InvoiceParsing</AssemblyName>
    <TargetFrameworkVersion>v4.0</TargetFrameworkVersion>
    <FileAlignment>512</FileAlignment>
  </PropertyGroup>
  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
    <PlatformTarget>AnyCPU</PlatformTarget>
    <DebugSymbols>true</DebugSymbols>
    <DebugType>full</DebugType>
    <Optimize>false</Optimize>
    <OutputPath>bin\Debug\</OutputPath>
    <DefineConstants>DEBUG;TRACE</DefineConstants>
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    <Optimize>true</Optimize>
    <OutputPath>bin\Release\</OutputPath>
    <DefineConstants>TRACE</DefineConstants>
    <ErrorReport>prompt</ErrorReport>
    <WarningLevel>4</WarningLevel>
  </PropertyGroup>
  <ItemGroup>
    <Reference Include="Bytescout.PDFExtractor, Version=6.30.0.2431, Culture=neutral, PublicKeyToken=f7dd1bd9d40a50eb, processorArchitecture=MSIL">
      <SpecificVersion>False</SpecificVersion>
      <HintPath>C:\Program Files\Bytescout PDF Extractor SDK\net2.00\Bytescout.PDFExtractor.dll</HintPath>
    </Reference>
    <Reference Include="System" />
    <Reference Include="System.Data" />
    <Reference Include="System.Drawing" />
    <Reference Include="System.Xml" />
  </ItemGroup>
  <ItemGroup>
    <Compile Include="Program.cs" />
    <Compile Include="Properties\AssemblyInfo.cs" />
  </ItemGroup>
  <ItemGroup>
    <Content Include="Invoice.pdf">
      <CopyToOutputDirectory>Always</CopyToOutputDirectory>
    </Content>
  </ItemGroup>
  <Import Project="$(MSBuildToolsPath)\Microsoft.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>

Program.cs

      using System;
using System.Drawing;
using Bytescout.PDFExtractor;

namespace InvoiceParsing
{
	/// <summary>
	/// This example demonstrates parsing and data extraction from typical invoice.
	/// </summary>
	class Program
	{
		static void Main(string[] args)
		{
			// Create TextExtractor instance
			TextExtractor textExtractor = new TextExtractor("demo", "demo");
			textExtractor.WordMatchingMode = WordMatchingMode.ExactMatch; // Set exact search (default is SmartSearch that works like in Adobe Reader)

			// Create XMLExtractor instance
			XMLExtractor xmlExtractor = new XMLExtractor("demo", "demo");

			// Load document
			textExtractor.LoadDocumentFromFile("Invoice.pdf");
			xmlExtractor.LoadDocumentFromFile("Invoice.pdf");

			// Results
			string invoiceNo = string.Empty;
			string invoiceDate = string.Empty;
			string total = string.Empty;
			string tableData = string.Empty;

			// Iterate pages
			for (int i = 0; i < textExtractor.GetPageCount(); i++)
			{
				RectangleF pageRectangle = textExtractor.GetPageRectangle(i);
				RectangleF tableRect = new RectangleF(0, 0, pageRectangle.Width, 0);

				// Search for "Invoice No."
				if (textExtractor.Find(i, "Invoice No.", false))
				{
					// Get the found text rectangle
					RectangleF textRect = textExtractor.FoundText.Bounds;
					// Assume the text at right is the invoice number.
					// Shift the rectangle to the right:
					textRect.X = textRect.Right;
					textRect.Width = pageRectangle.Right - textRect.Left;
					// Set the extraction region and extract the text
					textExtractor.SetExtractionArea(textRect);
					invoiceNo = textExtractor.GetTextFromPage(i).Trim();
				}
				
				// Search for "Invoice Date" and extract text at right
				if (textExtractor.Find(i, "Invoice Date", false))
				{
					RectangleF textRect = textExtractor.FoundText.Bounds;
					textRect.X = textRect.Right;
					textRect.Width = pageRectangle.Right - textRect.Left;
					textExtractor.SetExtractionArea(textRect);
					invoiceDate = textExtractor.GetTextFromPage(i).Trim();
				}

				// Search for "Quantity" keyword to detect the top of the tabular data rectangle
				if (textExtractor.Find(i, "Quantity", false))
				{
					// Keep the top table coordinate
					tableRect.Y = textExtractor.FoundText.Bounds.Top; // use textRect.Bottom if you want to skip column headers
				}
				
				// Search for "TOTAL" (it will be also the bottom of tabular data rectangle)
				if (textExtractor.Find(i, "TOTAL", true /* case sensitive! */)) 
				{
					RectangleF textRect = textExtractor.FoundText.Bounds;
					textRect.X = textRect.Right;
					textRect.Width = pageRectangle.Right - textRect.Left;
					textExtractor.SetExtractionArea(textRect);
					total = textExtractor.GetTextFromPage(i).Trim();

					// Calculate the table height
					tableRect.Height = textRect.Top - tableRect.Top;
				}

				// Extract tabular data using XMLExtractor
				if (tableRect.Height > 0)
				{
					xmlExtractor.SetExtractionArea(tableRect);
					tableData = xmlExtractor.GetXMLFromPage(i);
				}
			}

			// Display extracted data
			Console.WriteLine("Invoice No.: " + invoiceNo);
			Console.WriteLine("Invoice Date: " + invoiceDate);
			Console.WriteLine("TOTAL: " + total);
			Console.WriteLine("Table Data: ");
			Console.WriteLine(tableData);

			Console.WriteLine("Press any key...");
			Console.ReadKey();
		}
	}
}