License exception - feature not supported

[jphelan]

Trying to get some clarification - I am using .NET Core 2.0 in my MVC project (Visual Studio 2017) with the trial license of dotConnect for Postgresql.

In startup.cs I have the context added to my services:

Code: Select all

services.AddDbContext<MyContext>(opts => opts.UsePostgreSql(connectionString));

But when I try something like this:

Code: Select all

MyContext.MyTable.ToList();

I receive the error in the subject line.

That said, when I navigate to Tools > PostgreSQL > License Information, the prompt tells me I do not need a license because the project does not have a reference to Devart.Data.Postgresql included in the project. I used the installer when I downloaded the trial license.

Is this currently not supported, or have I messed up the install for the license?

[Shalex]

A current implementation of dotConnect for PostgreSQL includes two versions of assemblies:

1) the .NET Framework Devart.* assemblies which are shipped with installation:
* assemblies are created in C:\Program Files (x86)\Devart\dotConnect\PostgreSQL\ (by default)
* licensing approach is described at https://www.devart.com/dotconnect/postg ... nsing.html

2) the .NET Standard (.NET Core) Devart.* assemblies which are available via NuGet:
* you can download packages from https://www.nuget.org/packages/devart.d ... sql.efcore (or https://www.nuget.org/packages/devart.d ... resql.linq )
* licensing approach is described at https://www.devart.com/dotconnect/postg ... ndard.html

The "Feature is not supported." exception is generated by .NET Standard Devart.* assemblies, it means that runtime cannot find a license file (or license key).

[jphelan]

Thanks for your response.

I went back, uninstalled the trial and reinstalled it. I then added the EFCore package with NuGet. I have the license .key file in my ProgramData folder as well.

That said, I am still receiving the 'does not have a reference Devart.Data.PostgreSQL' message despite using the Devart.Data.PostgreSQL.Entity.PgSqlDbContextOptionsBuilder class in my Startup.cs file (the project builds successfully with it). Do I need an explicit reference in my code?

For the record, when I debug the code I get the same 'feature not supported' message when I try to pull data. The .key file doesn't seem to getting recognized.

[Shalex]

1. Please replace your C:\ProgramData\Devart\dotConnect\License\devart.data.postgresql.key with the one we just sent to your email. It resets 30 days trial period.

2. Refer to viewtopic.php?f=3&t=36044. Does this help?

[jphelan]

Would you mind sending that email again? I did not receive it - it's likely something on my end, sorry for the hassle!

As for the other forum post, adding the key file to the project and a reference to the connection string nets me the same 'feature not supported' message.

When I looked under Windows > Debug > Modules, I found that I had no references there to Devart.Data.dll and Devart.Data.Postgresql.dll. That lines up with what the license tool tells me - that no reference is included.

I'm missing something here and I feel like it's obvious. I'm using Devart libraries (the code snippets in my first post) in my code and they're compiling just fine - how do I get the compiler on board?

Thanks again for your help.

[Shalex]

Would you mind sending that email again? I did not receive it - it's likely something on my end, sorry for the hassle!

1. Done. If you do not receive it, contact us via https://www.devart.com/company/contactform.html.

When I looked under Windows > Debug > Modules, I found that I had no references there to Devart.Data.dll and Devart.Data.Postgresql.dll. That lines up with what the license tool tells me - that no reference is included.

2. Please upload a small test project for reproducing to ftp://ftp.devart.com (credentials: anonymous / yourEmail).

[jphelan]

Thank you for your continued support on this - I really appreciate it.

I have a small test project setup that runs into the same error but I've found I cannot log into the ftp site.

Credential pairs I've tried:

anonymous / [this account's email]
anonymous / [blank]
[this account's email] / [blank]
[this account's email] / anonymous

[Shalex]

We will check permission settings on our FTP server.

Could you please upload your test project to some other file exchange server?

[jphelan]

https://www.dropbox.com/s/3vj6zb79pps3b ... n.zip?dl=0

Please let me know if that doesn't work.

The project uses the public schema under postgres with table 'testtable' and column 'numbercolumn' (integer). User/password is under the connection string as well as the license path (local to my machine atm).

I receive the error message in TestTableRepository.cs @ line 19 (or line 15, if it's uncommented).

Thanks again!

-jphelan

[Shalex]

The key used in your project is outdated. Please try this one: https://www.devart.com/pub/devart.data. ... ql.key.zip . It works with your project in our environment. Notify us about the result.

[jphelan]

That was it!

Thanks again for your assistance.