原文 VS2012,VS2013,and VS2015Pro+NpgsqlDdexProvider+EFv6 how to(by @kenjiuno)

Reference: #213

Overview

1. Install Npgsql DDEX (Data Designer Extensibility) provider.
2. Install Npgsql ADO.NET Data Provider.
3. Visual Studio’s Entity Data Model wizard will be enabled for PostgreSQL servers.

Prerequisites

Visual Studio 2015 users:

1. Visual Studio 2015 Professional or greater editions. Express edition won’t work.
2. Microsoft Visual Studio 2015 Update 1 is available.

Visual Studio 2013 users:

1. Visual Studio 2013 Professional Update 2 or greater editions. Express edition won’t work.
2. Microsoft Visual Studio 2013 Update 5 is available.

Visual Studio 2012 users:

1. Visual Studio 2012 Professional or greater editions. Express edition won’t work.
2. Visual Studio 2012 Update 5 is available.

PostgreSQL server installed:

1. Tested on PostgreSQL 9.3.4 (win-x64)

Install DDEX provider (Npgsql 3.0.x)

1. Grab Setup_NpgsqlDdexProvider.exe from https://github.com/npgsql/npgsql/releases and run it.
2. Select all components to install.

Note: The version among Npgsql, EntityFramework6.Npgsql and NpgsqlDdexProvider must be same. For example, if you select Npgsql 3.0.5, it needs EntityFramework6.Npgsql 3.0.5. Also NpgsqlDdexProvider 3.0.5.

Install Npgsql ADO.NET Data Provider to Visual Studio (Npgsql 3.0.x)

1. Launch Visual Studio.
2. Open [TOOL] menu, and then click [Setup Npgsql DbProviderFactories…]
3. Click [OK], 2 times.
4. Restart Visual Studio.

It asks permission to modify your devenv.exe.config:

This process will add the Npgsql in devenv.exe.config:

  <system.data>
    <DbProviderFactories>
      ...
      <remove invariant="Npgsql" />
      <add name="Npgsql Data Provider" invariant="Npgsql" description=".Net Data Provider for PostgreSQL" type="Npgsql.NpgsqlFactory, Npgsql, Version=3.0.0.0, Culture=neutral, PublicKeyToken=5d8b90d52f46fda7" />
    </DbProviderFactories>
  </system.data>

Setup succeeded.

Note: It will be prompted if administrative privilege is required to modify your devenv.exe.config.

Prepare new project for testing

1. Launch Visual Studio.
2. [FILE]→[New]→[Project…]
3. [Console Application]
4. Name is [testef] for example.

Install Npgsql for Entity Framework 6 (3.0.x) from NuGet

1. Right click project [testef]
2. [Managet NuGet Packages…]
3. Type “Npgsql” at [Search Online (Ctrl+E)]
4. Install “Npgsql for Entity Framework 6” (EntityFramework6.Npgsql). Version is 3.0.5 for now.
5. EntityFramework 6.0.0 and Npgsql are also installed as part of its dependency.

Notice: The assembly versions of Npgsql and NpgsqlDdexProvider must be same. If, for some reason, you need to install a version which isn’t the latest one from NuGet, you need to use the following command in the NuGet Package Manager Console:

Install-Package EntityFramework6.Npgsql -Version <version> where <version> is the version you want to install. A list of versions available can be found in the NuGet Npgsql page: https://www.nuget.org/packages/Npgsql/

Add Npgsql EFv6 provider

Notice: Recent EntityFramework6.Npgsql NuGet package automatically does this process.

1. Open [App.config], or [Web.config] for web projects.
2. Add provider-element into providers-element: <provider invariantName="Npgsql" type="Npgsql.NpgsqlServices, EntityFramework6.Npgsql" />

An App.config having Npgsql EFv6 privoder:

<?xml version="1.0" encoding="utf-8"?>
<configuration>
  <configSections>
    <!-- For more information on Entity Framework configuration, visit http://go.microsoft.com/fwlink/?LinkID=237468 -->
    <section name="entityFramework" type="System.Data.Entity.Internal.ConfigFile.EntityFrameworkSection, EntityFramework, Version=6.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" requirePermission="false" />
  </configSections>
  <startup>
    <supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.5" />
  </startup>
  <entityFramework>
    <defaultConnectionFactory type="System.Data.Entity.Infrastructure.SqlConnectionFactory, EntityFramework" />
    <providers>
      <provider invariantName="System.Data.SqlClient" type="System.Data.Entity.SqlServer.SqlProviderServices, EntityFramework.SqlServer" />
      <provider invariantName="Npgsql" type="Npgsql.NpgsqlServices, EntityFramework6.Npgsql" />
    </providers>
  </entityFramework>
</configuration>

Add Npgsql ADO.NET Data Provider

You need to declare the Npgsql ADO.NET Data Provider. Edit one of following config files:

1. App.config or Web.config
2. machine.config

If you are using NuGet for your application, we recommend to edit: App.config or Web.config

machine.config are placed in these locations. Framework64 will exist on 64-bit Windows:

C:\Windows\Microsoft.NET\Framework\v4.0.30319\Config\machine.config C:\Windows\Microsoft.NET\Framework64\v4.0.30319\Config\machine.config

This is needed part of App.config:

<system.data>
  <DbProviderFactories>
    <remove invariant="Npgsql"/>
    <add name="Npgsql Data Provider"
         invariant="Npgsql"
         description=".Net Data Provider for PostgreSQL"
         type="Npgsql.NpgsqlFactory, Npgsql, Culture=neutral, PublicKeyToken=5d8b90d52f46fda7"
         support="FF" />
  </DbProviderFactories>
</system.data>

Note: <remove invariant="Npgsql"/> is important, in case of already having <add invariant="Npgsql" ... /> in machine.config.

Edited App.config:

<?xml version="1.0" encoding="utf-8"?>
<configuration>
  <configSections>
    <!-- For more information on Entity Framework configuration, visit http://go.microsoft.com/fwlink/?LinkID=237468 -->
    <section name="entityFramework" type="System.Data.Entity.Internal.ConfigFile.EntityFrameworkSection, EntityFramework, Version=6.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" requirePermission="false" />
  </configSections>
  <startup>
    <supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.5" />
  </startup>
  <entityFramework>
    <defaultConnectionFactory type="System.Data.Entity.Infrastructure.SqlConnectionFactory, EntityFramework" />
    <providers>
      <provider invariantName="System.Data.SqlClient" type="System.Data.Entity.SqlServer.SqlProviderServices, EntityFramework.SqlServer" />
      <provider invariantName="Npgsql" type="Npgsql.NpgsqlServices, EntityFramework6.Npgsql" />
    </providers>
  </entityFramework>
  <system.data>
    <DbProviderFactories>
      <remove invariant="Npgsql"/>
      <add name="Npgsql Data Provider"
           invariant="Npgsql"
           description=".Net Data Provider for PostgreSQL"
           type="Npgsql.NpgsqlFactory, Npgsql, Culture=neutral, PublicKeyToken=5d8b90d52f46fda7"
           support="FF" />
    </DbProviderFactories>
  </system.data>
</configuration>

Build once

1. Build your project.

New ADO.NET Entity Data Model

1. Right click project [testef]
2. [Add]→[New Item…]
3. [ADO.NET Entity Data Model]
4. Default name [Model1] for example.
5. Click [Add]
6. [EF Designer from database] at Choose Model Contents.
   
7. [New Connection] at Choose Your Data Connection.
   
8. [PostgreSQL Database] at Change Data Source.
   
9. Fill properties in Connection Properties. It is easy to fill everything by setting [ConnectionString].
   

My sample ConnectionString:

Host=127.0.0.1;Port=5432;Database=npgsql_tests;Username=npgsql_tests;Password=npgsql_tests

Note: PreloadReader and Compatible properies are obsoleted since Npgsql 3.0.0. Please remove them before submitting ConnectionString.

1. Select [Yes, include the sensitive data in the connection string.] in this case for easy setup.
   
2. Select tables which you want, at Choose Your Database Objects and Settings.
   

Note: remember the text npgsql_tests_efModel at [Model Namespace].

1. Click OK for Security Warning. T4 Templates generator warns you as it contains just runnable C# code.
   
2. You will get a generated model.
   

Edit your program.cs

Just my sample code for npgsql_tests_ef database.

About the name of “npgsql_tests_efEntities” class, check your [Model Namespace] entered above. Replace “Model” with “Entities”, like it is “npgsql_tests_efModel”.

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace testef
{
    class Program
    {
        static void Main(string[] args)
        {
            using (npgsql_tests_efEntities Context = new npgsql_tests_efEntities())
            {
                foreach (Blogs blog in Context.Blogs)
                {
                    Console.WriteLine(blog.BlogId + " " + blog.Name);
                }
            }
        }
    }
}

Sample output:

How to check if Npgsql DDEX is working correctly. (Npgsql 3.0.x)

(by @kenjiuno)

Reference: #718

NpgsqlDdexProvider 3.0.4 and later has a feature to check Npgsql installation status of your .NET project.

1. Right click your .NET project
2. Click [Check Npgsql project installation]

Click a button to start the check!

It will suggest them if you need one or more actions:

[Test and result] shows test cases and their results:

How to check if Npgsql DDEX was correctly loaded. (Npgsql 2.x)

(by @kenjiuno)

Reference: #67

Here are tips to check.

• Check your connection dialog:
  
• Make sure to edit both x86 and x64’s machine.config. VS2013 runs 64bit mode on x64 machine. C:\Windows\Microsoft.NET\Framework\v4.0.30319\Config\machine.config C:\Windows\Microsoft.NET\Framework64\v4.0.30319\Config\machine.config

<system.data>
  <DbProviderFactories>
    <add name="Npgsql Data Provider"
         invariant="Npgsql"
         description=".Net Data Provider for PostgreSQL"
         type="Npgsql.NpgsqlFactory, Npgsql, Version=2.0.12.91, Culture=neutral, PublicKeyToken=5d8b90d52f46fda7"
         support="FF" />
  </DbProviderFactories>
</system.data>

Note that the Version attribute above should match the version of the Npgsql Assembly you are using.

NpgsqlDdexProvider build tips

(by @kenjiuno)

Reference: #213

VS2010 users

You’ll need VS2010 Professional or greater.

SP0 users:

• Install: Visual Studio 2010 SDK

SP1 users:

• Install: Microsoft Visual Studio 2010 Service Pack 1 (Installer)
• Install: Visual Studio 2010 SP1 SDK

If you need newer NpgsqlDdexProvider2010.pkgdef, create your own manually. pkgdef is a kind of registry file for our DDEX registration. Note: It is needed only if you change contents of NpgsqlDataProviderRegistration class.

Command example:

H:\Dev\Npgsql\NpgsqlDdexProvider>"H:\Program Files (x86)\Microsoft Visual Studio 2010 SDK SP1\VisualStudioIntegration\Tools\Bin\CreatePkgDef.exe" /out=NpgsqlDdexProvider2010.pkgdef /codebase bin\Release-net40\NpgsqlDdexProvider.dll

Output:

	Visual Studio (R) PkgDef Creation Utility.
	Copyright (c) Microsoft Corporation. All rights reserved.

	CreatePkgDef : warning : The Assembly specified at 'bin\Release-net40\NpgsqlDdexProvider.dll' cannot be loaded because an alternate copy with the same identity
	exists in the Assembly probing path at 'H:\Dev\Npgsql\NpgsqlDdexProvider\bin\Release-net40\NpgsqlDdexProvider.dll'. The Assembly at 'H:\Dev\Npgsql\NpgsqlDdexPro
	vider\bin\Release-net40\NpgsqlDdexProvider.dll' will be loaded instead.
	Assembly: NpgsqlDdexProvider 1.0.0.0
	Output file: NpgsqlDdexProvider2010.pkgdef

	インストールされている製品:   NpgsqlDdexProviderPackage、Version 1.0
	パッケージ:          NpgsqlDdexProviderPackage {958b9481-2712-4670-9a62-8fe65e5beea7}
	サービス:          PostgreSQL Provider Object Factory

	SUCCEEDED:        NpgsqlDdexProvider

Check: How to create a pkgdef file for your Visual Studio Packagehttp://blogs.msdn.com/b/dsvst/archive/2010/03/08/how-to-create-a-pkgdef-file-for-your-visual-studio-package.aspx

VS2012 users

You’ll need VS2012 Professional or greater.

• Install: Microsoft Visual Studio 2012 SDK
• Install: Visual Studio 2012 Update 4

VS2013 users

You’ll need VS2013 Professional or greater.

• Install: Microsoft Visual Studio 2013 SDK
• Install: Visual Studio 2013 Update 2 or later.

VS2015 users

You’ll need VS2015 Professional or greater.

• Check: Installing the Visual Studio Extensibility Tools (VS SDK)

How to debug Npgsql DDEX extension

In order to debug it, you will need to use the Experimental Instance of Visual Studio.

• In the NpgsqlDdex project, right click and select properties.
• Go to Debug tab
• Click on the radio button for Start External Program. Point it to the devenv.exe binary. On my machine it’s located at

C:\Program Files (x86)\Microsoft Visual Studio 10.0\Common7\IDE\devenv.exe

Then set the command line arguments to /rootsuffix Exp

Save everything and now, just right click the NpgsqlDdex project -> Debug -> Run in a new instance. A new Visual Studio instance should be run where the extension will be made available and you can debug it in the first visual studio instance.

Reference: http://stackoverflow.com/questions/9281662/how-to-debug-visual-studio-extensions