#.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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Our ERP solution runs on different sql databases (such as ms sql and posgre). We are using the same code for all plattforms, doing database-specific changes in the db driver for each type of database.

There is one function in our program, where the user can store long text to discribe something, which is used in print and web. This text is treated/stored as html and can include pictures. The pictures in the html are stored base64 coded inside the html and the html is stored as text in a column. In other database systems, this is treated as TEXT or BLOB, and workings just fine.

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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 am using the %Net.HttpRequest class to download a file from the internet .using the following code. When a file is returned in the DOM I am able to read the file content and save it to the desired location but when my response is a download dialog nothing is returned in the HttpResponse. Am I doing something wrong here is where I have gotten to so far any help appreciated.

current code

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I'm following this guide as well as the sample.cs file and getting an error message on this line

cache_connection.Connect();

The error is:

Caught GlobalsException: lc_conn::connect_device returned Db_err: source: lc_conn::connect() message: lc_conn::connect: CacheSecureStart returned -15: <ACCESSDENIED>

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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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Hi,

We are developing a .NET6 application using Iris database. We would like to use ORM for easier code maintenance.

I saw a doc about Entity Framework: https://docs.intersystems.com/iris20231/csp/docbook/DocBook.UI.Page.cls?KEY=BNET_eframe, but even it's newest Iris version, the Entity Framework is very old .NET Framework (2013) and not supported by Microsoft anymore. Are there any plans to support Entity Framework Core?

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