#.NET

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NET Framework (pronounced dot net) is a software framework developed by Microsoft that runs primarily on Microsoft Windows.

Official site.

.NET support in InterSystems Data Platform.

Hi There,

I have Microsoft Visual Studio Community 2019 installed and tried to setup the entity framework as per Using Entity Framework with InterSystems IRIS Data Platform (https://learning.intersystems.com/course/view.php?id=1046) tutorial but I can't see the ISC data source in MS Visual Studio's Data source section. Does this mean that MS VS Community 2019 is not supported with the Entity Frmawork?

Hassan

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Question
· Aug 12, 2020
dotnet core

Is there an InterSystems supported dotnet core library or community contributed repo on the horizon? At this time we are exploring installing the ODBC driver in our containers but would rather use more robust solution.

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Recently I came across a very strong statement to the effect that InterSystems.Data.CacheClient.dll library works fast because it does not open a TCP/IP connection, instead it works in the same process as a database. It made me pause for quite some time. Firstly because .Net Managed Provider, which utilises this library, opens TCP/IP connection to the database (and it is stated in the documentation "Using .NET and the ADO.NET Managed Provider with Caché"). And secondly, because as far as I know only eXtreme applications attach themselves to the process.

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Hello,

I'm currently exploring alternatives to CSP/services and ODBC/Sql Maps for access to Caché. I'm not seeing a library which would interest me, so am considering creating one myself.

Does 'CacheConnection' in C# use RPC of some sort, or a defined protocol to communicate with Caché, or does it do so over telnet with scripted commands? I would assume the former. If so, is this a publicly documented protocol that can be implemented by library developers?

Any guidance in this area would be appreciated.

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Question
· Nov 4, 2020
IRISReference in Native Api

I am trying to use IRIS Native API in .NET code I see following code snippet here https://docs.intersystems.com/irislatest/csp/docbook/DocBook.UI.Page.cls...

  IRISReference valueRef = new IRISReference(""); // set inital value to null string
  iris.ClassMethodString("%SomeClass","SomeMethod",valueRef);
  String myString = valueRef.value;               // get the method result

But IRISReference is not available as a type.

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I have an old .NET 4.5 project, working with database InterSystems.Cache. The project is deployed on a Windows server. Data is retrieved using the InterSystems.Data.CacheClient.dll library.

But now I'm planning migration of the project to .NET 8 to container with linux centos.

How can I get data from InterSystems.Cache in this case?

As I understand it, InterSystems.Data.CacheClient.dll is only for the .NET framework.

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will InterSystems fix the Transaction-Handling for the .Net Connection Provider?

Nor the Property IsTransactionAcvtive nor TransactionLevel is set on the Connection when using BeginTransaction.

Latest PreView will give me problem as InterSystems removed removed the TStart() Option to create the Transaction that way which gave back a TransactionObject whith working versions...

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Edit:

May have found the issue but not the solution.

"SELECT * FROM wmhISTORYdETAIL" runs as a passthrough without asking for the DNS.

but

'SELECT Count([wmhISTORYdETAIL].[HistHMNumber] AS CountOfHistHMNumber FROM [wmhISTORYdETAIL] WHERE ((([wmhISTORYdETAIL].[HistMovType])='Receipt') AND (([wmhISTORYdETAIL].[HistMovDate])>=Date()-1) AND (([wmhISTORYdETAIL].[HistMovDate])<Date()));'

asks for the DNS but both are linked to a table that has the password saved.

Any Ideas please?

Rob

Hi

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I am developing a viewer for Crystal Reports using the Crystal Reports for Visual Studio (CR13SP26). I have also installed the latest ODBC Drivers for Cache, but when I connect some reports to the Cache database using a connection string, I get an error that I failed to retrieve data from the database, and it reports the Database Vendor Code 30. Has anyone used Crystal Reports connecting via a connection string and received this error? If so, how did you correct it?

Thank you,

Brian Cromwell

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Native API , IRIS 2019 regression vs Cache .Net provider

1. checking the native API, with .net provider, from IS docs, I realize,

that it is not possible to wrap objectSricpt Class with .NET (C# for example) pure Class with it's methods/properties

and make pure instance syntax of: new myNetClass - as wrapper of irisClass.

as I realize, you can run .Net Class , only with .Invoke or iris.ClassMethodVoid("class.name","method")

such syntax, cannot execute event driven on proprety change, let say, with it's build in mechanizm in .Net

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My scenario is:

I have a Cache method that

call a REST -> JSON -response > INSERT/UPDATE the source table of a DeepSee Cube -> Update the Cube only for this change -

I want to view in .NET Application the changes. For that I want that this method should be executed at a defined interval.

Or maybe the solution is a Refresh button in .NET page. is there any way to access a Cache method from .NET?

Any idea how to do it?

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I'm attempting to use the .NET Entity Framework provider that is provided by InterSystems (see: https://docs.intersystems.com/latest/csp/docbook/DocBook.UI.Page.cls?KEY=GBMP_eframe). In our environment, the "Support Delimited Identifiers" option is turned off and we are not allowed to turn it on without significant testing effort. When this setting is off, the SQL that is generated by the Entity Framework provider is not considered valid and therefore the provider doesn't work (it DOES work,

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