Introduction to PayPal for C# - ASP.NET developers

lepipele

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3 Feb 2017CPOL24 min read

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An overview that presents all PayPal integration options, targeted especially at C# developers.

paypal_src.zip
- LepiPele.PayPal.sln
- LepiPele.PayPal
  - API
  - App_Data
  - Default.aspx
  - Default.aspx.cs
  - Default.aspx.designer.cs
  - IPN
    - IPNHandler.aspx
    - IPNHandler.aspx.cs
    - IPNHandler.aspx.designer.cs
    - Messages
      - 633904738197968750.txt
  - LepiPele.PayPal.csproj
  - PDT
  - Properties
  - Web References
    - com.paypal.sandbox.www
      - AddressVerifyResponseType.datasource
      - BAUpdateResponseType.datasource
      - BillOutstandingAmountResponseType.datasource
      - BillUserResponseType.datasource
      - BMButtonSearchResponseType.datasource
      - BMCreateButtonResponseType.datasource
      - BMGetButtonDetailsResponseType.datasource
      - BMGetInventoryResponseType.datasource
      - BMManageButtonStatusResponseType.datasource
      - BMSetInventoryResponseType.datasource
      - BMUpdateButtonResponseType.datasource
      - CoreComponentTypes.xsd
      - CreateBillingAgreementResponseType.datasource
      - CreateMobilePaymentResponseType.datasource
      - CreateRecurringPaymentsProfileResponseType.datasource
      - DoAuthorizationResponseType.datasource
      - DoCaptureResponseType.datasource
      - DoDirectPaymentResponseType.datasource
      - DoExpressCheckoutPaymentResponseType.datasource
      - DoMobileCheckoutPaymentResponseType.datasource
      - DoNonReferencedCreditResponseType.datasource
      - DoReauthorizationResponseType.datasource
      - DoReferenceTransactionResponseType.datasource
      - DoUATPAuthorizationResponseType.datasource
      - DoUATPExpressCheckoutPaymentResponseType.datasource
      - DoVoidResponseType.datasource
      - eBLBaseComponents.xsd
      - EnterBoardingResponseType.datasource
      - GetAccessPermissionDetailsResponseType.datasource
      - GetAuthDetailsResponseType.datasource
      - GetBalanceResponseType.datasource
      - GetBillingAgreementCustomerDetailsResponseType.datasource
      - GetBoardingDetailsResponseType.datasource
      - GetExpressCheckoutDetailsResponseType.datasource
      - GetMobileStatusResponseType.datasource
      - GetPalDetailsResponseType.datasource
      - GetRecurringPaymentsProfileDetailsResponseType.datasource
      - GetTransactionDetailsResponseType.datasource
      - ManagePendingTransactionStatusResponseType.datasource
      - ManageRecurringPaymentsProfileStatusResponseType.datasource
      - MassPayResponseType.datasource
      - PayPalSvc.wsdl
      - Reference.cs
      - Reference.map
      - RefundTransactionResponseType.datasource
      - SetAccessPermissionsResponseType.datasource
      - SetAuthFlowParamResponseType.datasource
      - SetCustomerBillingAgreementResponseType.datasource
      - SetExpressCheckoutResponseType.datasource
      - SetMobileCheckoutResponseType.datasource
      - TransactionSearchResponseType.datasource
      - UpdateAccessPermissionsResponseType.datasource
      - UpdateRecurringPaymentsProfileResponseType.datasource
  - Web.config

<Project ToolsVersion="3.5" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
  <PropertyGroup>
    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
    <ProductVersion>9.0.30729</ProductVersion>
    <SchemaVersion>2.0</SchemaVersion>
    <ProjectGuid>{76DC9771-6C14-46ED-A76A-AD9A58C910FC}</ProjectGuid>
    <ProjectTypeGuids>{349c5851-65df-11da-9384-00065b846f21};{fae04ec0-301f-11d3-bf4b-00c04f79efbc}</ProjectTypeGuids>
    <OutputType>Library</OutputType>
    <AppDesignerFolder>Properties</AppDesignerFolder>
    <RootNamespace>LepiPele.PayPal</RootNamespace>
    <AssemblyName>LepiPele.PayPal</AssemblyName>
    <TargetFrameworkVersion>v3.5</TargetFrameworkVersion>
  </PropertyGroup>
  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
    <DebugSymbols>true</DebugSymbols>
    <DebugType>full</DebugType>
    <Optimize>false</Optimize>
    <OutputPath>bin\</OutputPath>
    <DefineConstants>DEBUG;TRACE</DefineConstants>
    <ErrorReport>prompt</ErrorReport>
    <WarningLevel>4</WarningLevel>
  </PropertyGroup>
  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
    <DebugType>pdbonly</DebugType>
    <Optimize>true</Optimize>
    <OutputPath>bin\</OutputPath>
    <DefineConstants>TRACE</DefineConstants>
    <ErrorReport>prompt</ErrorReport>
    <WarningLevel>4</WarningLevel>
  </PropertyGroup>
  <ItemGroup>
    <Reference Include="System" />
    <Reference Include="System.Data" />
    <Reference Include="System.Core">
      <RequiredTargetFramework>3.5</RequiredTargetFramework>
    </Reference>
    <Reference Include="System.Data.DataSetExtensions">
      <RequiredTargetFramework>3.5</RequiredTargetFramework>
    </Reference>
    <Reference Include="System.Web.Extensions">
      <RequiredTargetFramework>3.5</RequiredTargetFramework>
    </Reference>
    <Reference Include="System.Xml.Linq">
      <RequiredTargetFramework>3.5</RequiredTargetFramework>
    </Reference>
    <Reference Include="System.Drawing" />
    <Reference Include="System.Web" />
    <Reference Include="System.Xml" />
    <Reference Include="System.Configuration" />
    <Reference Include="System.Web.Services" />
    <Reference Include="System.EnterpriseServices" />
    <Reference Include="System.Web.Mobile" />
  </ItemGroup>
  <ItemGroup>
    <Content Include="API\ExpressCheckoutCancel.aspx" />
    <Content Include="API\ExpressCheckoutStart.aspx" />
    <Content Include="API\ExpressCheckoutSuccess.aspx" />
    <Content Include="Default.aspx" />
    <Content Include="IPN\IPNHandler.aspx" />
    <Content Include="PDT\PDTSuccess.aspx" />
    <Content Include="PDT\PDTStart.aspx" />
    <Content Include="Web.config" />
  </ItemGroup>
  <ItemGroup>
    <Compile Include="API\ExpressCheckoutCancel.aspx.cs">
      <DependentUpon>ExpressCheckoutCancel.aspx</DependentUpon>
      <SubType>ASPXCodeBehind</SubType>
    </Compile>
    <Compile Include="API\ExpressCheckoutCancel.aspx.designer.cs">
      <DependentUpon>ExpressCheckoutCancel.aspx</DependentUpon>
    </Compile>
    <Compile Include="API\ExpressCheckoutStart.aspx.cs">
      <DependentUpon>ExpressCheckoutStart.aspx</DependentUpon>
      <SubType>ASPXCodeBehind</SubType>
    </Compile>
    <Compile Include="API\ExpressCheckoutStart.aspx.designer.cs">
      <DependentUpon>ExpressCheckoutStart.aspx</DependentUpon>
    </Compile>
    <Compile Include="API\ExpressCheckoutSuccess.aspx.cs">
      <DependentUpon>ExpressCheckoutSuccess.aspx</DependentUpon>
      <SubType>ASPXCodeBehind</SubType>
    </Compile>
    <Compile Include="API\ExpressCheckoutSuccess.aspx.designer.cs">
      <DependentUpon>ExpressCheckoutSuccess.aspx</DependentUpon>
    </Compile>
    <Compile Include="API\PayPalAPIUtil.cs" />
    <Compile Include="Default.aspx.cs">
      <SubType>ASPXCodeBehind</SubType>
      <DependentUpon>Default.aspx</DependentUpon>
    </Compile>
    <Compile Include="Default.aspx.designer.cs">
      <DependentUpon>Default.aspx</DependentUpon>
    </Compile>
    <Compile Include="IPN\IPNHandler.aspx.cs">
      <DependentUpon>IPNHandler.aspx</DependentUpon>
      <SubType>ASPXCodeBehind</SubType>
    </Compile>
    <Compile Include="IPN\IPNHandler.aspx.designer.cs">
      <DependentUpon>IPNHandler.aspx</DependentUpon>
    </Compile>
    <Compile Include="PDT\PDTHolder.cs" />
    <Compile Include="PDT\PDTSuccess.aspx.cs">
      <DependentUpon>PDTSuccess.aspx</DependentUpon>
      <SubType>ASPXCodeBehind</SubType>
    </Compile>
    <Compile Include="PDT\PDTSuccess.aspx.designer.cs">
      <DependentUpon>PDTSuccess.aspx</DependentUpon>
    </Compile>
    <Compile Include="PDT\PDTStart.aspx.cs">
      <DependentUpon>PDTStart.aspx</DependentUpon>
      <SubType>ASPXCodeBehind</SubType>
    </Compile>
    <Compile Include="PDT\PDTStart.aspx.designer.cs">
      <DependentUpon>PDTStart.aspx</DependentUpon>
    </Compile>
    <Compile Include="Properties\AssemblyInfo.cs" />
    <Compile Include="Properties\Settings.Designer.cs">
      <AutoGen>True</AutoGen>
      <DesignTimeSharedInput>True</DesignTimeSharedInput>
      <DependentUpon>Settings.settings</DependentUpon>
    </Compile>
    <Compile Include="Web References\com.paypal.sandbox.www\Reference.cs">
      <AutoGen>True</AutoGen>
      <DesignTime>True</DesignTime>
      <DependentUpon>Reference.map</DependentUpon>
    </Compile>
  </ItemGroup>
  <ItemGroup>
    <WebReferences Include="Web References\" />
  </ItemGroup>
  <ItemGroup>
    <WebReferenceUrl Include="https://www.sandbox.paypal.com/wsdl/PayPalSvc.wsdl">
      <UrlBehavior>Dynamic</UrlBehavior>
      <RelPath>Web References\com.paypal.sandbox.www\</RelPath>
      <UpdateFromURL>https://www.sandbox.paypal.com/wsdl/PayPalSvc.wsdl</UpdateFromURL>
      <ServiceLocationURL>
      </ServiceLocationURL>
      <CachedDynamicPropName>
      </CachedDynamicPropName>
      <CachedAppSettingsObjectName>Settings</CachedAppSettingsObjectName>
      <CachedSettingsPropName>LepiPele_PayPal_com_paypal_sandbox_www_PayPalAPIInterfaceService</CachedSettingsPropName>
    </WebReferenceUrl>
  </ItemGroup>
  <ItemGroup>
    <None Include="Properties\Settings.settings">
      <Generator>SettingsSingleFileGenerator</Generator>
      <LastGenOutput>Settings.Designer.cs</LastGenOutput>
    </None>
    <None Include="Web References\com.paypal.sandbox.www\AddressVerifyResponseType.datasource">
      <DependentUpon>Reference.map</DependentUpon>
    </None>
    <None Include="Web References\com.paypal.sandbox.www\BAUpdateResponseType.datasource">
      <DependentUpon>Reference.map</DependentUpon>
    </None>
    <None Include="Web References\com.paypal.sandbox.www\BillOutstandingAmountResponseType.datasource">
      <DependentUpon>Reference.map</DependentUpon>
    </None>
    <None Include="Web References\com.paypal.sandbox.www\BillUserResponseType.datasource">
      <DependentUpon>Reference.map</DependentUpon>
    </None>
    <None Include="Web References\com.paypal.sandbox.www\BMButtonSearchResponseType.datasource">
      <DependentUpon>Reference.map</DependentUpon>
    </None>
    <None Include="Web References\com.paypal.sandbox.www\BMCreateButtonResponseType.datasource">
      <DependentUpon>Reference.map</DependentUpon>
    </None>
    <None Include="Web References\com.paypal.sandbox.www\BMGetButtonDetailsResponseType.datasource">
      <DependentUpon>Reference.map</DependentUpon>
    </None>
    <None Include="Web References\com.paypal.sandbox.www\BMGetInventoryResponseType.datasource">
      <DependentUpon>Reference.map</DependentUpon>
    </None>
    <None Include="Web References\com.paypal.sandbox.www\BMManageButtonStatusResponseType.datasource">
      <DependentUpon>Reference.map</DependentUpon>
    </None>
    <None Include="Web References\com.paypal.sandbox.www\BMSetInventoryResponseType.datasource">
      <DependentUpon>Reference.map</DependentUpon>
    </None>
    <None Include="Web References\com.paypal.sandbox.www\BMUpdateButtonResponseType.datasource">
      <DependentUpon>Reference.map</DependentUpon>
    </None>
    <None Include="Web References\com.paypal.sandbox.www\CoreComponentTypes.xsd" />
    <None Include="Web References\com.paypal.sandbox.www\CreateBillingAgreementResponseType.datasource">
      <DependentUpon>Reference.map</DependentUpon>
    </None>
    <None Include="Web References\com.paypal.sandbox.www\CreateMobilePaymentResponseType.datasource">
      <DependentUpon>Reference.map</DependentUpon>
    </None>
    <None Include="Web References\com.paypal.sandbox.www\CreateRecurringPaymentsProfileResponseType.datasource">
      <DependentUpon>Reference.map</DependentUpon>
    </None>
    <None Include="Web References\com.paypal.sandbox.www\DoAuthorizationResponseType.datasource">
      <DependentUpon>Reference.map</DependentUpon>
    </None>
    <None Include="Web References\com.paypal.sandbox.www\DoCaptureResponseType.datasource">
      <DependentUpon>Reference.map</DependentUpon>
    </None>
    <None Include="Web References\com.paypal.sandbox.www\DoDirectPaymentResponseType.datasource">
      <DependentUpon>Reference.map</DependentUpon>
    </None>
    <None Include="Web References\com.paypal.sandbox.www\DoExpressCheckoutPaymentResponseType.datasource">
      <DependentUpon>Reference.map</DependentUpon>
    </None>
    <None Include="Web References\com.paypal.sandbox.www\DoMobileCheckoutPaymentResponseType.datasource">
      <DependentUpon>Reference.map</DependentUpon>
    </None>
    <None Include="Web References\com.paypal.sandbox.www\DoNonReferencedCreditResponseType.datasource">
      <DependentUpon>Reference.map</DependentUpon>
    </None>
    <None Include="Web References\com.paypal.sandbox.www\DoReauthorizationResponseType.datasource">
      <DependentUpon>Reference.map</DependentUpon>
    </None>
    <None Include="Web References\com.paypal.sandbox.www\DoReferenceTransactionResponseType.datasource">
      <DependentUpon>Reference.map</DependentUpon>
    </None>
    <None Include="Web References\com.paypal.sandbox.www\DoUATPAuthorizationResponseType.datasource">
      <DependentUpon>Reference.map</DependentUpon>
    </None>
    <None Include="Web References\com.paypal.sandbox.www\DoUATPExpressCheckoutPaymentResponseType.datasource">
      <DependentUpon>Reference.map</DependentUpon>
    </None>
    <None Include="Web References\com.paypal.sandbox.www\DoVoidResponseType.datasource">
      <DependentUpon>Reference.map</DependentUpon>
    </None>
    <None Include="Web References\com.paypal.sandbox.www\eBLBaseComponents.xsd" />
    <None Include="Web References\com.paypal.sandbox.www\EnterBoardingResponseType.datasource">
      <DependentUpon>Reference.map</DependentUpon>
    </None>
    <None Include="Web References\com.paypal.sandbox.www\GetAccessPermissionDetailsResponseType.datasource">
      <DependentUpon>Reference.map</DependentUpon>
    </None>
    <None Include="Web References\com.paypal.sandbox.www\GetAuthDetailsResponseType.datasource">
      <DependentUpon>Reference.map</DependentUpon>
    </None>
    <None Include="Web References\com.paypal.sandbox.www\GetBalanceResponseType.datasource">
      <DependentUpon>Reference.map</DependentUpon>
    </None>
    <None Include="Web References\com.paypal.sandbox.www\GetBillingAgreementCustomerDetailsResponseType.datasource">
      <DependentUpon>Reference.map</DependentUpon>
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      <DependentUpon>Reference.map</DependentUpon>
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    <None Include="Web References\com.paypal.sandbox.www\GetExpressCheckoutDetailsResponseType.datasource">
      <DependentUpon>Reference.map</DependentUpon>
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    <None Include="Web References\com.paypal.sandbox.www\GetMobileStatusResponseType.datasource">
      <DependentUpon>Reference.map</DependentUpon>
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    <None Include="Web References\com.paypal.sandbox.www\GetPalDetailsResponseType.datasource">
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    <None Include="Web References\com.paypal.sandbox.www\GetRecurringPaymentsProfileDetailsResponseType.datasource">
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      <DependentUpon>Reference.map</DependentUpon>
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    <None Include="Web References\com.paypal.sandbox.www\MassPayResponseType.datasource">
      <DependentUpon>Reference.map</DependentUpon>
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    <None Include="Web References\com.paypal.sandbox.www\PayPalSvc.wsdl" />
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  </ItemGroup>
  <ItemGroup>
    <Folder Include="App_Data\" />
    <Folder Include="IPN\Messages\" />
  </ItemGroup>
  <Import Project="$(MSBuildBinPath)\Microsoft.CSharp.targets" />
  <Import Project="$(MSBuildExtensionsPath)\Microsoft\VisualStudio\v9.0\WebApplications\Microsoft.WebApplication.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.
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          <DevelopmentServerPort>17911</DevelopmentServerPort>
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          </IISUrl>
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License

This article, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

Written By

lepipele

Chief Technology Officer

United States

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Introduction to PayPal for C# - ASP.NET developers

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