postgresql does not appear in Data Source when generating .ADO.net Entity Data Model

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I succeeded in accessing an existing postgresql dbase by using npgsql directly. I used for this:

  1. PostgreSQL 9.0.10 (32 bit)
  2. Visual Studio 2015 Community (64 bit)
  3. NpgSql 2.2.5 (through Manage Nuget Packages)

The dbase however has 25+ tables and 400+ columns and such my intention is to to use entity framework + .ADO.net Entity Data Model to avoid having to code access to all columns. I searched and tried everything on this site, npgsql site http://www.npgsql.org/doc/ddex.html, ... but I I did not succeeded in generating an .ADO.net Entity Data Model because postgresql does not appear in Data Source.

I used for this:

  1. PostgreSQL 9.0.10 (32 bit)
  2. Visual Studio 2015 Community (64 bit)
  3. NpgSql 2.2.5 (through Manage Nuget Packages)
  4. Setup_Npgsql-2.2.5.0-r3-net45.exe (from GitHub because some sites indicated the requirement of having the same version into GAC as the used package in visual studio project; I did not took version 3.0.0 as Github misses install files).
  5. Npgsql.entityframework6 2.2.5 (through Manage Nuget Packages)
  6. Entityframework 6.1.3 (through Manage Nuget Packages)

What do I have to do so postgresql appears as Data Source when trying to generate an .ADO.net Entity Data Model? Or does Visual Studio 2015 community does not allows the generation of .ADO net entity data model for postgresql ?

EDIT I have added the following info in the hope for a reply:

Microsoft Windows 8.1 6.3.9600 build 9600 64-bit used

Extract out "C:\Windows\Microsoft.NET\Framework\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=2.2.5.0, Culture=neutral, PublicKeyToken=5d8b90d52f46fda7" support="FF" />
    </DbProviderFactories>
</system.data>

Extract out "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=2.2.5.0, Culture=neutral, PublicKeyToken=5d8b90d52f46fda7" support="FF" />
    </DbProviderFactories>
</system.data>

"Visual Studio - packages.config"

<?xml version="1.0" encoding="utf-8"?>
<packages>
  <package id="EntityFramework" version="6.1.3" targetFramework="net452" />
  <package id="Npgsql" version="2.2.5" targetFramework="net452" />
  <package id="Npgsql.EntityFramework" version="2.2.5" targetFramework="net452" />
</packages>

"Visual Studio - App.config"

<?xml version="1.0" encoding="utf-8"?>
<configuration>
  <configSections>
    <section name="entityFramework" type="System.Data.Entity.Internal.ConfigFile.EntityFrameworkSection, EntityFramework, Version=6.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" requirePermission="false" />
    <!-- For more information on Entity Framework configuration, visit http://go.microsoft.com/fwlink/?LinkID=237468 -->
  </configSections>
  <startup>
    <supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.5.2" />
  </startup>
  <entityFramework>
    <defaultConnectionFactory type="System.Data.Entity.Infrastructure.LocalDbConnectionFactory, EntityFramework">
      <parameters>
        <parameter value="v11.0" />
      </parameters>
    </defaultConnectionFactory>
    <providers>
      <provider invariantName="Npgsql" type="Npgsql.NpgsqlServices, Npgsql.EntityFramework" />
      <provider invariantName="System.Data.SqlClient" type="System.Data.Entity.SqlServer.SqlProviderServices, EntityFramework.SqlServer" />
    </providers>
  </entityFramework>
</configuration>

I was confused while 3 days becuase the same problem.

But, I found solve this problem:

  1. install .vsix file in your visual studio environment. https://github.com/npgsql/npgsql/releases/tag/v3.1.8 (NpgsqlDdexProvider)

  2. install Npgsql and EntityFramework6.Npgsql by Nuget Package Manager.

  3. Build your project. (For apply configuration of modified App.xaml by Nuget)

  4. You can use ADO.NET Entity Model Generation.

Also, dotConnect not support Entity Model in Express version. It supported in only commercial version.

But currently, Npgsql has immediately close bug in EDM. so, I finding solution.

Entity Data Model Wizard doesn't generate model from db � Issue , What do I have to do so postgresql appears as Data Source when trying to generate an .ADO.net Entity Data Model? Or does Visual Studio 2015� postgresql does not appear in Data Source when generating .ADO.net Entity Data Model 3 Visual Studio Support (DDEX) for PostgreSQL with Entity Framework - Where is the setup file?

I had been the same issue for a while. Then, I've tried to install dotconnect https://www.nuget.org/packages/dotConnect.Express.for.PostgreSQL/7.4.506/. And, it works! hope this help.

Using the PSQL Data Providers in Visual Studio, I'm trying to generate model from my db using this method: Net Data Provider for PostgreSQL" type="Npgsql.NpgsqlFactory, PostgreSQL database is not listed while connection to Entity Data Nothing happens with adding ADO. databsource does not show up in the Choose Data Source dialog box. postgresql does not appear in Data Source when generating .ADO.net Entity Data Model I succeeded in accessing an existing postgresql dbase by using npgsql directly. I used for this: PostgreSQL 9.0.10 (32 bit)Visual Studio 2015 Community (64 bit) NpgSql 2.2.5 (through Manage Nuget Packages)The dbase however has 25+ tables

This issue can been solved by adding a Visual Studio extension provided here: http://www.npgsql.org/doc/ddex.html

The ADO.NET Entity Framework Data Provider, 2 If the PSQL data provider is displayed in the Data source field, skip to Step 4. data provider terminates the attempt to execute the command and generates Note that this option does not apply to the ADO.NET Entity Framework data provider. NET 2.0 common programming model, select the PSQL Generic Provider� Entity Framework Power Tools help you build applications that use the Entity Data Model. The power tools can generate a conceptual model, validate an existing model, produce source-code files that contain object classes based on the conceptual model, and produce source-code files that contain views that the model generates.

This bugged me for hours in VS2017. I played with the app.config settings manually with no joy. The steps to fix it for me were:

  1. Install Npgsql.vsix from the version of npgsql i want to use from here
  2. Remove nuget packages EntityFramework, Npgsql, EntityFramework6.Npgsql
  3. Remove blocks in app.config with any references to these packages including entityFramework and assemblyBindings.
  4. Re-install the nuget packages above in that order
  5. Rebuild

EDIT

I also had to add the following to app.config to successfully run Enable-Migrations

<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>

How to add postgres data source in entity data model wizard , Data.SqlClient.Entity namespace is common for Microsoft ADO.NET Entity when accessing a model and mapping metadata and connecting to the data source. NET Entity Framework data provider are the same as those used by the PSQL ADO. However, these changes do not require changes to your application. Add an ADO.NET Entity Data Model. As I mentioned before, we have to create a web service that will contain the Entity Data Model. So now we are going to add an ADO.NET Entity Data Model to

dotConnect for PostgreSQL Entity Framework Tutorial, I'm not a user of Entity Framework, but maybe this answer will help: c# - Postgresql and Entity Framework - Stack Overflow[^] Could be that you� I tried the private release of the DDEX provider by kenjiuno but the PostgreSQL databsource does not show up in the Choose Data Source dialog box. I need to say that I have VS2012/2013 and 2015 installed side by side. I've found out that VS2015 tries to load a library called Npgsql.EntityFrameworkLegacy, Version 3.0.0.0.

Entity Framework Support, ADO.NET Entity Framework is an object-relational mapping (ORM) framework for Alternatively you may create model for Entity Framework v1 or v4, which don't When creating a new connection select PostgreSQL Database in the Data Source You can inspect it visually in the designer or take a look behind the scenes� 2. Now, add Entity Data Model by right clicking on the project in the solution explorer -> Add-> New Item. This will open the Add New Item popup. In the popup, select ADO.NET Entity Data Model and provide an appropriate name to the EDM ('School' in this case) and click the Add button. 3.

Add new data sources, dotConnect for PostgreSQL fully supports ADO. What is ADO. entity model); Visual Studio LightSwitch support; Generate Database Wizard (Model-First) support NET Entity Data Model to your project and specify its name. Since there are no global Entity Framework provider registration for Entity Framework v6, you� Select the ADO.NET Entity Data Model template, give the Entity Data Model the name MoviesDBModel.edmx, and click the Add button. Clicking the Add button launches the Data Model Wizard. In the Choose Model Contents step, choose the Generate from a database option and click the Next button (see Figure 2).

Software Catalogue - Drivers and interfaces, In Visual Studio 2019 (and previous versions), the features are not supported for . NET NET data tools in Visual Studio, the term data source refers to . A class in an Entity Framework model that is associated with some kind of database. The generated classes appear in the Data Source Configuration� Visual Studio Integration. Npgsql has a Visual Studio extension (VSIX) which integrates PostgreSQL access into Visual Studio. It allows connecting to PostgreSQL from within Visual Studio's Server Explorer, create an Entity Framework 6 model from an existing database, etc.

Comments
  • I have the same issue in VS 2015 and I've done pretty much the same thing you have but I can't get postgres to show up. I even installed the dotConnect express version of postgres with no luck.
  • I can understand you and I am still having this problem. There is not much I can do about this as a beginning coder in C#. I guess I have no other choice then to keep studying/trying to finally discover something obvious.
  • This gave me nightmares for weeks. Good luck. I eventually got around it by creating a whole bunch of functions to perform my data manipulation.
  • hi folks - i am also not seeing a dataprovider when using npgsql. any of you managed to find a solution - the world would be very appreciative if you could post results. chrs
  • The build step is critical!