Compiling a .Net Core Console App with CoreRT and Dapper

To compile my project successfully I had to do the following:

• Include all references in the System.Data.SqlClient nuget package as project references. In this case I also included those of System.Configuration.ConfigurationManager.

• From the command line publish for the required operating system: dotnet publish -r win-x64

• From publishing path copy the System.Data.SqlClient.dll and sni.dll files to a fixed path: ..\SQLClient\win-x64\

• In csproj file make the conditional reference to the nuget package and to published dll, in this case through the parameter MSBuild NativeCompilation.

• Finally, publish with CoreRT from the command line: dotnet publish -r win-x64 / p: NativeCompilation = true

And it worked!

GetIPVersionSQLSRV.csproj

<Project Sdk="Microsoft.NET.Sdk">

  <PropertyGroup>
    <TargetFramework>netcoreapp2.2</TargetFramework>
    <OutputType>Exe</OutputType>
  </PropertyGroup>

  <ItemGroup Condition="'$(BuildingInsideVisualStudio)' == 'true' OR '$(NativeCompilation)' != 'true'">
    <!--System.Data.SqlClient Nuget Reference -->
    <PackageReference Include="System.Data.SqlClient" Version="4.6.1" />
  </ItemGroup>

  <ItemGroup>
    <PackageReference Include="System.Configuration.ConfigurationManager" Version="4.5.0" />
    <!--System.Data.SqlClient References-->
    <PackageReference Include="Microsoft.Win32.Registry" Version="4.5.0" />
    <PackageReference Include="System.Security.AccessControl" Version="4.5.0" />
    <PackageReference Include="System.Security.Principal.Windows" Version="4.5.0" />
    <PackageReference Include="System.Text.Encoding.CodePages" Version="4.5.0" />
    <!--System.Configuration.ConfigurationManager References-->
    <PackageReference Include="System.Security.Cryptography.ProtectedData" Version="4.5.0" />
    <PackageReference Include="System.Security.Permissions" Version="4.5.0" />
  </ItemGroup>

  <ItemGroup Condition="'$(BuildingInsideVisualStudio)' != 'true' AND '$(NativeCompilation)'=='true'">
    <!-- ILCompiler and rd.xml -->
    <PackageReference Include="Microsoft.DotNet.ILCompiler" Version="1.0.0-alpha-*" />
    <RdXmlFile Include="rd.xml" />
    <!--System.Data.SqlClient published Dll Reference -->
    <Reference Include="System.Data.SqlClient">
      <HintPath>..\SQLClient\win-x64\System.Data.SqlClient.dll</HintPath>
    </Reference>
  </ItemGroup>

</Project>

Program.cs

using System;
using System.Configuration;
using System.Data.SqlClient;
using System.IO;
using System.Net;

namespace GetIPVersionSQLSRV
{
    class Program
    {
        private static String config = ConfigurationManager.AppSettings["texto"];
        private static String cadena = ConfigurationManager.ConnectionStrings["default"].ConnectionString;
        static void Main(string[] args)
        {
            Console.WriteLine("Hello World! " + config);
            using(SqlConnection conn = new SqlConnection(cadena))
            {
                conn.Open();
                using (SqlCommand comm = new SqlCommand("SELECT @@VERSION;", conn))
                    Console.WriteLine(comm.ExecuteScalar());
            }
            HttpWebRequest req = (HttpWebRequest)WebRequest.Create(@"http://api.ipify.org?format=json");
            using (HttpWebResponse res = (HttpWebResponse)req.GetResponse())
            using (Stream strm = res.GetResponseStream())
            using (StreamReader read = new StreamReader(strm))
                Console.WriteLine(read.ReadToEnd());
            req = null;

            Console.ReadKey(false);
        }
    }
}

App.config

<?xml version="1.0" encoding="utf-8" ?>
<configuration>
  <appSettings>
    <add key="texto" value="CONFIG2"/>
  </appSettings>
  <connectionStrings>
    <add name="default" connectionString="User ID=user;PWD=p455w0rd;Initial Catalog=master;Data Source=localhost"/>
  </connectionStrings>
</configuration>

rd.xml

<Directives>
    <Application>
        <Assembly Name="System.Configuration.ConfigurationManager">
            <Type Name="System.Configuration.ClientConfigurationHost" Dynamic="Required All"/>
            <Type Name="System.Configuration.AppSettingsSection" Dynamic="Required All"/>
        </Assembly>
    </Application>
</Directives>

nuget.config

<?xml version="1.0" encoding="utf-8"?>
<configuration>
 <packageSources>
    <!--To inherit the global NuGet package sources remove the <clear/> line below -->
    <add key="dotnet-core"
  value="https://dotnetfeed.blob.core.windows.net/dotnet-core/index.json"/>
<add key="nuget.org"
  value="https://api.nuget.org/v3/index.json" protocolVersion="3"/>
    <add key="nuget" value="https://api.nuget.org/v3/index.json" />
 </packageSources>
</configuration>