An unhandled exception of type 'System.IO.FileLoadException' occurred in Backendless.dll

Windows Phone/.NET
1

I’m getting this error:
Additional information: Could not load file or assembly ‘System.Collections.Immutable, Version=1.2.3.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a’ or one of its dependencies. The located assembly’s manifest definition does not match the assembly reference. (Exception from HRESULT: 0x80131040)
when I’m trying to run this code in C#
IEventHandler userEventhandler = Backendless.Data.Of().RT();
** userEventhandler.AddUpdateListener(“filename != ‘’”, updatedUser =>**
** {**
** MessageBox.Show(“something happend”);**
** });**

2

Hi.
I’ve created inner task (BKNDLSS-18087) to investigate the problem.
All information about progress will be posted here.

3

Hey,

Is there any progress?

4

Hi, Mendelson Dalpakim

Not yet. We’ll notify you as soon as the issue is resolved

5

Hi @mendelson_dalpakim,

What version of the .NET SDK and what version of the .NET framework do you use?

Regards,
Mark

6

.NET Framework 4.7.2
.NET SDK 5.1.5.0

7

Hey guys,

Is there any progress? I’m kind of stuck here with my work…

8

Hi, @mendelson_dalpakim

Not yet. We are working on this task. We’ll notify you as soon as the issue is resolved

9

Hey @mendelson_dalpakim,

I created a ConsoleApplication using .NET 4.7:

Project%20Options%20%E2%80%93%20RTTest%202019-02-21%2020-08-54
Project%20Options%20%E2%80%93%20RTTest%202019-02-21%2020-08-54960×702 144 KB

I added the Backendless package from NuGet. Here’s a list of all dependencies which came with it:
cs%20%E2%80%93%20Visual%20Studio%20Community%202017%20for%20Mac%202019-02-21%2020-10-13

The code is trivially simple:

using System;
using BackendlessAPI;

namespace RTTest
{
  class MainClass
  {
    public static void Main( string[] args )
    {
      Backendless.InitApp( "F632EF89-D87C-8E34-FF81-0E72A4F14600", "MY-DOTNET-API-KEY-IS-HERE" );
      Backendless.RT.AddConnectErrorListener( ( fault ) =>
       {
         Console.WriteLine( fault.Message );
       } );

      Backendless.RT.AddConnectListener( () =>
      {
        Console.WriteLine( "Connected to RT" );
      } );

      Backendless.Data.Of( "Person" ).RT().AddUpdateListener( ( obj ) =>
       {
         Console.WriteLine( "object updated" );
       } );

      Console.ReadLine();
    }
  }
}

When I run the code, I get the following:

BACKENDLESS LOG:try to subscribe RTSubscription{id='d3e0f6ad-71c1-44d7-b819-8295f811982a', callback=BackendlessAPI.RT.RTCallback`1[System.Collections.Generic.Dictionary`2[System.String,System.Object]], subscriptionName=OBJECTS_CHANGES, options=System.Collections.Generic.Dictionary`2[System.String,System.Object]}
BACKENDLESS LOG:Connected event 
BACKENDLESS LOG:subOn called
Connected to RT

Then I update an object with a REST API call and I get the following output:

BACKENDLESS LOG:Got sub res
BACKENDLESS LOG:Got result for subscription d3e0f6ad-71c1-44d7-b819-8295f811982a
object updated

I’ll be happy to share the project with you, if you’d like.

Regards,
Mark

10

Hey Mark,

I tried creating the same project myself, still didn’t work for me.
Please share your project with me and maybe I’ll find the problem.

Thank You.

11

Hello,

You can download the project from here:

Make sure to restore the packages, I excluded them from the archive to keep it smaller.

Regards,
Mark

12

I don’t know why but the problem was with my Visual Studio.
I usually using Visual Studio 2013 Ultimate, I downloaded Visual Studio 2017 Community and after downloading all dependencies it worked.
For some reason 2013 didn’t add all dependencies and I couldn’t add manually.

Thanks for your help!