firebird-net-provider — All about development of the MS .Net provider

[Firebird-net-provider] [FB-Tracker] Created: (DNET-1017) Handle script generation by using SET TERM

[Jiri C. (JIRA) <tr...@fi...>]

Handle script generation by using SET TERM
------------------------------------------

                 Key: DNET-1017
                 URL: http://tracker.firebirdsql.org/browse/DNET-1017
             Project: .NET Data provider
          Issue Type: Improvement
          Components: Entity Framework Core
    Affects Versions: 8.0.0.0
            Reporter: Jiri Cincura
            Assignee: Jiri Cincura
            Priority: Minor


Now possible in EF Core 5: https://github.com/dotnet/efcore/issues/14746.

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[Firebird-net-provider] [FB-Tracker] Created: (DNET-1016) Remove `params` from QueueEvents

[Jiri C. (JIRA) <tr...@fi...>]

Remove `params` from QueueEvents
--------------------------------

                 Key: DNET-1016
                 URL: http://tracker.firebirdsql.org/browse/DNET-1016
             Project: .NET Data provider
          Issue Type: Task
          Components: ADO.NET Provider
            Reporter: Jiri Cincura
            Assignee: Jiri Cincura
            Priority: Trivial




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[Firebird-net-provider] [FB-Tracker] Created: (DNET-1015) Update tests to FB4 RC1

[Jiri C. (JIRA) <tr...@fi...>]

Update tests to FB4 RC1
-----------------------

                 Key: DNET-1015
                 URL: http://tracker.firebirdsql.org/browse/DNET-1015
             Project: .NET Data provider
          Issue Type: Task
          Components: ADO.NET Provider
            Reporter: Jiri Cincura
            Assignee: Jiri Cincura
            Priority: Minor




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[Firebird-net-provider] [FB-Tracker] Created: (DNET-1014) Unhandled exception at FirebirdSql.Data.Client.Managed.FirebirdNetworkStream.Flush()

[Luciano M. (JIRA) <tr...@fi...>]

Unhandled exception at FirebirdSql.Data.Client.Managed.FirebirdNetworkStream.Flush()
------------------------------------------------------------------------------------

                 Key: DNET-1014
                 URL: http://tracker.firebirdsql.org/browse/DNET-1014
             Project: .NET Data provider
          Issue Type: Bug
          Components: ADO.NET Provider
    Affects Versions: 7.10.1.0
         Environment: Windows 10 version 20H2
.NET Framework 4.8
            Reporter: Luciano Mendes
            Assignee: Jiri Cincura


ACTUAL RESULT:
Under certain conditions where network failures can happen more frequently (high latency network), the following unhandled exception can happen: 

See the end of this message for details on invoking 
just-in-time (JIT) debugging instead of this dialog box.

************** Exception Text **************
FirebirdSql.Data.Common.IscException: Unable to complete network request to host "
No message for error code 335544721 found. ---> System.IO.IOException: Unable to write data to the transport connection: An existing connection was forcibly closed by the remote host. ---> System.Net.Sockets.SocketException: An existing connection was forcibly closed by the remote host
   at System.Net.Sockets.Socket.Send(Byte[] buffer, Int32 offset, Int32 size, SocketFlags socketFlags)
   at System.Net.Sockets.NetworkStream.Write(Byte[] buffer, Int32 offset, Int32 size)
   --- End of inner exception stack trace ---
   at System.Net.Sockets.NetworkStream.Write(Byte[] buffer, Int32 offset, Int32 size)
   at FirebirdSql.Data.Client.Managed.FirebirdNetworkStream.Flush()
   at FirebirdSql.Data.Client.Managed.Version10.GdsStatement.DoFreePacket(Int32 option)
   --- End of inner exception stack trace ---
   at FirebirdSql.Data.Client.Managed.Version10.GdsStatement.DoFreePacket(Int32 option)
   at FirebirdSql.Data.Client.Managed.Version11.GdsStatement.Free(Int32 option)
   at FirebirdSql.Data.Common.StatementBase.Release()
   at FirebirdSql.Data.Client.Managed.Version10.GdsStatement.Dispose()
   at FirebirdSql.Data.FirebirdClient.FbCommand.Release()
   at FirebirdSql.Data.FirebirdClient.FbCommand.Dispose(Boolean disposing)
   at System.ComponentModel.Component.Dispose()
   at CHRONOS.Models.Databases.FirebirdSQLDatabase.SelectProcedure(String procedureName, String[] inputParameters, DataTable dataTable, Boolean poolingStatus)



EXPECTED RESULT
This unhandled exception should be redirected to the FbException class.


OHTER INFORMATION
Here is the code of the procedure that the unhandled exception happens:
        private static bool SelectProcedure(string procedureName, string[] inputParameters, out DataTable dataTable, bool poolingStatus = true)
        {
            dataTable = new DataTable();
            using (var fbConnection = new FbConnection(ConnectionString()))
            using (var fbCommand = new FbCommand(procedureName, fbConnection))
                try
                {
                    Cursor.Current = Cursors.WaitCursor;
                    fbCommand.CommandType = CommandType.StoredProcedure;
                    //INPUT PARAMETERS
                    for (var i = 0; i < inputParameters.Length; i++)
                        fbCommand.Parameters.Add("@" + i, inputParameters[i]).Direction = ParameterDirection.Input;
                    //OPEN CONNECTION
                    fbConnection.Open();
                    //SELECT PROCEDURE
                    using (var fbDataReader = fbCommand.ExecuteReader())
                        dataTable.Load(fbDataReader);
                    NotifyReconnection();
                    Utility.Log("SP", procedureName);
                    return true;
                }
                catch (FbException ex)
                {
                    if (poolingStatus)
                        return SelectProcedure(procedureName, inputParameters, out dataTable, false);
                    else NotifyException(ex);
                    return false;
                }
                finally
                {
                    Cursor.Current = Cursors.Default;
                }
        }

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[Firebird-net-provider] [FB-Tracker] Created: (DNET-1013) Remove support for SIO_LOOPBACK_FAST_PATH

[Jiri C. (JIRA) <tr...@fi...>]

Remove support for SIO_LOOPBACK_FAST_PATH
-----------------------------------------

                 Key: DNET-1013
                 URL: http://tracker.firebirdsql.org/browse/DNET-1013
             Project: .NET Data provider
          Issue Type: Task
            Reporter: Jiri Cincura
            Assignee: Jiri Cincura


It's deprecated.

https://docs.microsoft.com/en-us/windows/win32/winsock/sio-loopback-fast-path
(WDK) https://docs.microsoft.com/en-us/windows-hardware/drivers/network/sio-loopback-fast-path

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[Firebird-net-provider] [FB-Tracker] Created: (DNET-1012) Tests for async code path

[Jiri C. (JIRA) <tr...@fi...>]

Tests for async code path
-------------------------

                 Key: DNET-1012
                 URL: http://tracker.firebirdsql.org/browse/DNET-1012
             Project: .NET Data provider
          Issue Type: Task
          Components: ADO.NET Provider
            Reporter: Jiri Cincura
            Assignee: Jiri Cincura




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[Firebird-net-provider] [FB-Tracker] Created: (DNET-1011) IOException uses isc_network_error for IscException resulting in misleading message

[Jiri C. (JIRA) <tr...@fi...>]

IOException uses isc_network_error for IscException resulting in misleading message
-----------------------------------------------------------------------------------

                 Key: DNET-1011
                 URL: http://tracker.firebirdsql.org/browse/DNET-1011
             Project: .NET Data provider
          Issue Type: Bug
          Components: ADO.NET Provider
    Affects Versions: 7.10.1.0
            Reporter: Jiri Cincura
            Assignee: Jiri Cincura
            Priority: Minor


Better to use isc_net_write_err/isc_net_read_err.

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[Firebird-net-provider] [FB-Tracker] Created: (DNET-1010) When Identify throws exception GdsConnection is left dangling open

[Jiri C. (JIRA) <tr...@fi...>]

When Identify throws exception GdsConnection is left dangling open
------------------------------------------------------------------

                 Key: DNET-1010
                 URL: http://tracker.firebirdsql.org/browse/DNET-1010
             Project: .NET Data provider
          Issue Type: Bug
          Components: ADO.NET Provider
    Affects Versions: 7.10.1.0, 8.0.0.0
            Reporter: Jiri Cincura
            Assignee: Jiri Cincura
            Priority: Minor




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[Firebird-net-provider] [FB-Tracker] Created: (DNET-1009) Proper cancellation support for async operations

[Jiri C. (JIRA) <tr...@fi...>]

Proper cancellation support for async operations
------------------------------------------------

                 Key: DNET-1009
                 URL: http://tracker.firebirdsql.org/browse/DNET-1009
             Project: .NET Data provider
          Issue Type: Task
          Components: ADO.NET Provider
    Affects Versions: vNext
            Reporter: Jiri Cincura
            Assignee: Jiri Cincura




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[Firebird-net-provider] [FB-Tracker] Created: (DNET-1008) String concat - db index

[Rand R. (JIRA) <tr...@fi...>]

String concat - db index
------------------------

                 Key: DNET-1008
                 URL: http://tracker.firebirdsql.org/browse/DNET-1008
             Project: .NET Data provider
          Issue Type: Bug
          Components: Entity Framework
    Affects Versions: 7.10.1.0
            Reporter: Rand Random
            Assignee: Jiri Cincura


Is it possible to disable in EF provider to parse eg. StartsWith method like this

WHERE "f"."ITEM1" IS NOT NULL AND (("f"."ITEM1" LIKE _UTF8'HelloWorld' || _UTF8'%') AND (LEFT("f"."ITEM1", CHARACTER_LENGTH(_UTF8'HelloWorld')) = _UTF8'HelloWorld'))

but instead to not concat the '%' character eg.

WHERE "f"."ITEM1" IS NOT NULL AND (("f"."ITEM1" LIKE _UTF8'HelloWorld%') AND (LEFT("f"."ITEM1", CHARACTER_LENGTH(_UTF8'HelloWorld')) = _UTF8'HelloWorld'))

The first query won't use the index of the database, which is a performance lose.

I know there are the options
WithExplicitStringLiteralTypes
WithExplicitParameterTypes

which I have marked as false, so I was wondering if there maybe something similar for my case somewhere hidden.

If there isn't a configuration available already, I would like to ask if someone could point me in the right direction to make the necessary changes in the EF provider.
I need to query a rather big table, and not using the index isn't an option, since the performance drops drastically.

I know I could manually write the "optimized" query myself and use 

var foos = context.Foos.FromSqlRaw("SELECT * FROM Foos where Item like 'HelloWorld%'").ToList();

insead of

var foos = context.Foos.Where(x => x.Items.StartsWith("HelloWorld")).ToList();

But I am - currently - not writing those queries my self but rather rely on the filter mechanism of controls eg. DataGrid, FilterEditor.

Even if there is a solution that "intercepts" the query before sending it to the database, where I foolishly could write

sqlQuery = sqlQuery.("' || _UTF8'%'", "%'");

would also already be enough for my case.

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[Firebird-net-provider] [FB-Tracker] Created: (DNET-1007) FbException.ErrorCode is always returning 335544721 when try to open a connection with an invalid username/password

[Luciano M. (JIRA) <tr...@fi...>]

FbException.ErrorCode is always returning 335544721 when try to open a connection with an invalid username/password
-------------------------------------------------------------------------------------------------------------------

                 Key: DNET-1007
                 URL: http://tracker.firebirdsql.org/browse/DNET-1007
             Project: .NET Data provider
          Issue Type: Bug
          Components: ADO.NET Provider
    Affects Versions: 7.10.1.0
         Environment: Windows 10 Pro Version 20H2
Firebird 3.0.7.33374
            Reporter: Luciano Mendes
            Assignee: Jiri Cincura
            Priority: Critical
         Attachments: Error.png

ACTUAL RESULT
FbException.ErrorCode is always returning 335544721 when try to open a connection with an invalid username/password:

335544721
Unable to complete network request to host
No message for error code 35544721 found


EXPECTED RESULT
FbException.ErrorCode should return 33554472 error code when try to open a connection with an invalid username/password:

33554472
Your user name and password are not defined. Ask your database administrator to set up a Firebird login.


STEPS TO REPRODUCE THIS ISSUE:
- Try to open a connection to a Firebird 3.0 database with an invalid username/password.

ENVIRONMENT SETUP
==========databases.conf==========
CHRONOS_CIN = D:\APPLICATIONS\LURONUMEN\DB\CHRONOS_CIN.FDB 
{ 
AuthServer = Srp 
SecurityDatabase = CHRONOS_CIN 
UserManager = Srp 
}
==========firebird.conf==========
#SETUP 
UserManager = Srp, Legacy_UserManager 
WireCrypt = Enabled 
#PERFORMANCE 
DefaultDbCachePages = 30K 
FileSystemCacheThreshold = 2M 
LockHashSlots = 30011 
LockMemSize = 15M 
TempBlockSize = 2M 
TempCacheLimit = 3000M 
#SECURITY 
DatabaseAccess = None

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[Firebird-net-provider] [FB-Tracker] Created: (DNET-1006) Rename FbTransaction.Commit(string savePointName) to Release(string savePointName) #breaking

[Jiri C. (JIRA) <tr...@fi...>]

Rename FbTransaction.Commit(string savePointName) to Release(string savePointName) #breaking
--------------------------------------------------------------------------------------------

                 Key: DNET-1006
                 URL: http://tracker.firebirdsql.org/browse/DNET-1006
             Project: .NET Data provider
          Issue Type: New Feature
          Components: ADO.NET Provider
            Reporter: Jiri Cincura
            Assignee: Jiri Cincura




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[Firebird-net-provider] [FB-Tracker] Created: (DNET-1005) Support for DbDataReader.GetFieldValue<T>

[Jiri C. (JIRA) <tr...@fi...>]

Support for DbDataReader.GetFieldValue<T>
-----------------------------------------

                 Key: DNET-1005
                 URL: http://tracker.firebirdsql.org/browse/DNET-1005
             Project: .NET Data provider
          Issue Type: New Feature
          Components: ADO.NET Provider
            Reporter: Jiri Cincura
            Assignee: Jiri Cincura
            Priority: Minor


For a possibility of less casting and boxing.

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[Firebird-net-provider] [FB-Tracker] Created: (DNET-1004) Support for IDbColumnSchemaGenerator

[Jiri C. (JIRA) <tr...@fi...>]

Support for IDbColumnSchemaGenerator
------------------------------------

                 Key: DNET-1004
                 URL: http://tracker.firebirdsql.org/browse/DNET-1004
             Project: .NET Data provider
          Issue Type: New Feature
          Components: ADO.NET Provider
            Reporter: Jiri Cincura
            Assignee: Jiri Cincura
            Priority: Minor




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[Firebird-net-provider] [FB-Tracker] Created: (DNET-1003) Code First: Error seeding data when Table is created in same migration.

[Giacomo P. (JIRA) <tr...@fi...>]

Code First: Error seeding data when Table is created in same migration.
-----------------------------------------------------------------------

                 Key: DNET-1003
                 URL: http://tracker.firebirdsql.org/browse/DNET-1003
             Project: .NET Data provider
          Issue Type: Bug
          Components: Entity Framework Core
    Affects Versions: 7.10.1.0
            Reporter: Giacomo Policicchio
            Assignee: Jiri Cincura
            Priority: Minor


Due to Firebird behavior, in same transaction is not possible to insert data in a newly created Table. So, using Entity.HasData in OnModelCreating in same Migration where the table is created, an error is raised and migration fails.
Scripting the migration instead of applying it with update-database confirms my supects, the structure is:

START TRANSACTION;
DDL statements
HasData DML statements
Insert into 'MigrationsHistoryTable'
COMMIT;

First solution that came to my mind reading the code could be to wrap relevant DDL statemens between "set autoddl on;" and "set audoddl off" statements, e.g. in "Migrations/FbMigrationsSqlGenerator,cs",  method  "Generate(CreateTableOperation....", it would be easy to add these statements, maybe adding a flag in FbOptionsExtension to preserve default original behavior.
But this solution is too dirty, because if for any reason migration fails, DDL command are executed partially needing to manually recover, if possible, prior database state.  So the ideal solution instead would be to inject a "commit" and a "start transaction" between ddl and dml commands, so the only risks will be related to DML failing for any reason, but a fail like that could easily recovered. For this soultion I've to study more EF Core internal processes.
What do you thinK?

Bye







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[Firebird-net-provider] [FB-Tracker] Created: (DNET-1002) machine

[estevao (JIRA) <tr...@fi...>]

machine
-------

                 Key: DNET-1002
                 URL: http://tracker.firebirdsql.org/browse/DNET-1002
             Project: .NET Data provider
          Issue Type: Bug
         Environment: machine
            Reporter: estevao
            Assignee: Jiri Cincura


machine

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[Firebird-net-provider] [FB-Tracker] Created: (DNET-1001) CancellationToken story for FBCommand execution and fetching

[Jiri C. (JIRA) <tr...@fi...>]

CancellationToken story for FBCommand execution and fetching
------------------------------------------------------------

                 Key: DNET-1001
                 URL: http://tracker.firebirdsql.org/browse/DNET-1001
             Project: .NET Data provider
          Issue Type: New Feature
          Components: ADO.NET Provider
            Reporter: Jiri Cincura
            Assignee: Jiri Cincura




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[Firebird-net-provider] [FB-Tracker] Created: (DNET-1000) FbCommand.CommandPlan and CommandExplainedPlan properties should be methods #breaking

[Jiri C. (JIRA) <tr...@fi...>]

FbCommand.CommandPlan and CommandExplainedPlan properties should be methods #breaking
-------------------------------------------------------------------------------------

                 Key: DNET-1000
                 URL: http://tracker.firebirdsql.org/browse/DNET-1000
             Project: .NET Data provider
          Issue Type: New Feature
          Components: ADO.NET Provider
            Reporter: Jiri Cincura
            Assignee: Jiri Cincura
            Priority: Minor


Because it's actually a call (and hence not "instant" as is an expectation for property) and also async can't be done smoothly with properties.

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[Firebird-net-provider] [FB-Tracker] Created: (DNET-999) FbDatabaseInfo properties should be methods #breaking

[Jiri C. (JIRA) <tr...@fi...>]

FbDatabaseInfo properties should be methods #breaking
-----------------------------------------------------

                 Key: DNET-999
                 URL: http://tracker.firebirdsql.org/browse/DNET-999
             Project: .NET Data provider
          Issue Type: New Feature
          Components: ADO.NET Provider
    Affects Versions: 7.10.1.0
            Reporter: Jiri Cincura
            Assignee: Jiri Cincura
            Priority: Minor


Because it's actually a call (and hence not "instant" as is an expectation for property) and also async can't be done smoothly with properties.

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[Firebird-net-provider] [FB-Tracker] Created: (DNET-998) Connection pool is getting full if connection fails

[Silver A. (JIRA) <tr...@fi...>]

Connection pool is getting full if connection fails
---------------------------------------------------

                 Key: DNET-998
                 URL: http://tracker.firebirdsql.org/browse/DNET-998
             Project: .NET Data provider
          Issue Type: Bug
          Components: ADO.NET Provider
    Affects Versions: 7.10.1.0, 7.10.0.0
            Reporter: Silver Aid
            Assignee: Jiri Cincura


Hi!
If connection fails, the connection pool getting exhausted (even I use FbConnection.ClearAllPools()). Issue exists on 7.10.x.x but not in 7.5.0.0.
Example code:
**************************************************************
            int retries = 0;
            while (true)
            {
                try
                {
                    using (var con = new FbConnection($"User=SYSDBA;Password=xxxxx;Database=db;DataSource=localhost;Port=3553;Dialect=3;Charset=NONE;MaxPoolSize=3"))
                    {
                        con.Open();
                    }
                }
                catch (Exception ex)
                {
                    Console.WriteLine($"Connection failed: {ex.Message}");
                    if (!(ex is FbException)) break;
                    FbConnection.ClearAllPools();
                    if (retries++ >= 4)
                    {
                        Console.WriteLine("Giving up....");
                        break;
                    }
                }

            }
***********************************************************
With 7.5.0.0 the output is like expected:
Connection failed: Unable to complete network request to host "localhost".
Connection failed: Unable to complete network request to host "localhost".
Connection failed: Unable to complete network request to host "localhost".
Connection failed: Unable to complete network request to host "localhost".
Connection failed: Unable to complete network request to host "localhost".
Giving up....

With 7.10.x.x the output is:
Connection failed: Unable to complete network request to host "localhost".
Connection failed: Unable to complete network request to host "localhost".
Connection failed: Unable to complete network request to host "localhost".
Connection failed: Connection pool is full.

Thanks in advance.
Silver

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[Firebird-net-provider] [FB-Tracker] Created: (DNET-997) Explicit FbRemoteEvent.Open method #breaking

[Jiri C. (JIRA) <tr...@fi...>]

Explicit FbRemoteEvent.Open method #breaking
--------------------------------------------

                 Key: DNET-997
                 URL: http://tracker.firebirdsql.org/browse/DNET-997
             Project: .NET Data provider
          Issue Type: New Feature
          Components: ADO.NET Provider
    Affects Versions: 7.10.1.0
            Reporter: Jiri Cincura
            Assignee: Jiri Cincura
            Priority: Minor




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[Firebird-net-provider] [FB-Tracker] Created: (DNET-996) Remove CreateDatabase(string connectionString, bool overwrite) #breaking

[Jiri C. (JIRA) <tr...@fi...>]

Remove CreateDatabase(string connectionString, bool overwrite) #breaking
------------------------------------------------------------------------

                 Key: DNET-996
                 URL: http://tracker.firebirdsql.org/browse/DNET-996
             Project: .NET Data provider
          Issue Type: Task
    Affects Versions: 7.10.1.0
            Reporter: Jiri Cincura
            Assignee: Jiri Cincura


There's already CreateDatabase(string connectionString, int pageSize = 4096, bool forcedWrites = true, bool overwrite = false) and the CreateDatabase(string connectionString, bool overwrite) existed because originally optional arguments weren't in C#.

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[Firebird-net-provider] [FB-Tracker] Created: (DNET-995) Asyncify FbConnection

[Jiri C. (JIRA) <tr...@fi...>]

Asyncify FbConnection
---------------------

                 Key: DNET-995
                 URL: http://tracker.firebirdsql.org/browse/DNET-995
             Project: .NET Data provider
          Issue Type: Task
          Components: ADO.NET Provider
    Affects Versions: 7.10.1.0
            Reporter: Jiri Cincura
            Assignee: Jiri Cincura




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[Firebird-net-provider] [FB-Tracker] Created: (DNET-994) Explicit net5.0 target

[Jiri C. (JIRA) <tr...@fi...>]

Explicit net5.0 target
----------------------

                 Key: DNET-994
                 URL: http://tracker.firebirdsql.org/browse/DNET-994
             Project: .NET Data provider
          Issue Type: New Feature
          Components: ADO.NET Provider
    Affects Versions: 7.10.1.0
            Reporter: Jiri Cincura
            Assignee: Jiri Cincura
            Priority: Trivial




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[Firebird-net-provider] [FB-Tracker] Created: (DNET-993) Stop providing 7z downloads of builds

[Jiri C. (JIRA) <tr...@fi...>]

Stop providing 7z downloads of builds
-------------------------------------

                 Key: DNET-993
                 URL: http://tracker.firebirdsql.org/browse/DNET-993
             Project: .NET Data provider
          Issue Type: Task
          Components: ADO.NET Provider, Entity Framework, Entity Framework Core
    Affects Versions: 7.10.1.0
            Reporter: Jiri Cincura
            Assignee: Jiri Cincura
            Priority: Trivial


Nowadays everything should go through NuGet. If somebody really needs just the binary, it can be easily extracted from nupkg. 

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