#.NET

We are happy to present the bonuses page for the applications submitted to the InterSystems .Net, Java, Python, and JavaScript Contest!

See the results below.

Hi Developers!

Here are the technology bonuses for the InterSystems .Net, Java, Python, and JavaScript Contest that will give you extra points in the voting:

Hi Developers,

We are happy to announce the new InterSystems online programming contest:

🏆 InterSystems .Net, Java, Python, and JavaScript Contest 🏆

Duration: September 22 - October 12, 2025

Prize pool: $12,000

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>

I've tried many variations of Namespace + Username + Password and they all result in that error, even though I can connect to the namespace just fine using other means. 

Any plans for ODBC 3.8 support?

As an IT and cloud team manager with 18 years of experience with InterSystems technologies, I recently led our team in the transformation of our traditional on-premises ERP system to a cloud-based solution. We embarked on deploying InterSystems IRIS within a Kubernetes environment on AWS EKS, aiming to achieve a scalable, performant, and secure system. Central to this endeavor was the utilization of the AWS Application Load Balancer (ALB) as our ingress controller. 

Hello,

I'm using the .Net C# IRIS client and trying to create a HS.Data.OIDMap object which contains a $LIST property (.IdentityTypes). I am able to create the object using the .NET client, however when trying to create and assign the list object I get a "List cannot contain of type IrisObject".
Documentation for HS.Data.OIDMap https://docs.intersystems.com/irisforhealth20243/csp/documatic/%25CSP.Documatic.cls?LIBRARY=HSSYS&PRIVATE=1&CLASSNAME=HS.Data.OIDMap 

My question is two fold

I have been trying to get to grips with the new dot Net Gateway used in IRIS as the import of the DLL to construct proxy classes is no longer supported in IRIS I have a third party DLL that when I try to instantiate throws an error complaining about the class not instantiated as it does not support parameterless constructor .I am using this new 

set gateway = $system.external.getDotNetGateway()
do gateway.addToPath(myPath_"\DotNetGatewaySamples.dll")

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.

I am a volunteer at a nonprofit that is attempting to connect to a product that uses InterSystems Cache (Clinisys LIMS). I have not used this database before, but I have used many others (MS-SQL, Oracle, etc.). I am hoping IRIS is compatible enough with Cache for this project. 

I downloaded IRIS. I learned about Terminal [IRIS]. Using it I was able to create a new table, insert data, and retrieve it. I also used the Management Portal to query the new table. It also returned the data.

Hello My Friends,

I have a question how to use order by %DLIST, this is my code:

SELECT

$ListToString(%DLIST(DISTINCT MRDIA_ICDCode_DR->MRCID_Code),', ' ) ICDX,

$ListToString(%DLIST(DISTINCT (MRDIA_ICDCode_DR->MRCID_Desc || ' (' || MRDIA_DiagnosisType_DR->DTYP_Code || ')')),', ' ) Diagnose

FROM SQLUser.PA_Adm

LEFT JOIN SQLUser.PA_AdmInsurance ON (PAADM_RowID = INS_ParRef AND INS_Rank = 1)

LEFT JOIN SQLUser.PA_AdmPackage ON (PAADM_RowID = PACK_ParRef)

LEFT JOIN SQLUser.MR_Adm on MRADM_ADM_DR = PAADM_RowID

LEFT JOIN SQLUser.MR_Diagnos ON MRADM_RowId = MRDIA_MRADM_ParRef

InterSystems IRIS provides a complete application development environment for building sophisticated data- and analytics-intensive applications that connect data and application silos. It is designed to work with all of the common development technologies in an open, standards-based fashion and supports both server-side and client-side programming.

This is for IRIS For Health 2024.2.0

We are migrating away from the .NET Gateway and trying to use the python integration instead.

I followed the instructions to install IRIS

Then I installed python following the IRIS documentation indicating that python should be installed globally.

I set up the PythonRuntimeLibrary and PythonRuntimeLibraryVersion options under System->Configuration->Advanced memory settings and when I run the shell function, I get python:

Hello, 

I'm working on building some .NET Scripts/CLI tools and starting to use the .NET external language server.

We need one common method to persist data for all tables from C# rest api to InterSystems cache object script. 

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?

I created a Dotnet api to connect with IRIS database to do some task.
"InterSystems.Data.IRISClient.dll" (NativeAPI) is used in dotnet api to connect IRIS.
I used following code in dotnet to open and close the IRIS connection.

Open Connection
---------------------------
IRISConnection iRISConnect = new IRISConnection();
IRISCommand command = new IRISCommand();
iRISConnect.ConnectionString = "Server=xxxx.com; Port=1972; Namespace=aaa; Password=yyyy; User ID=xxxxxx;";
IRIS NativeAPI = IRIS.CreateIRIS(iRISConnect);
iRISConnect.Open();

Hi.

How can I pass a large string to classmethod params (e.g. large pictures) without getting MAXSTRING error?

Regards,
Matjaž

The new $system.external interface (aka "InterSystems External Servers") is used to call/integrate with external language code/libraries, it replace the old gateways (for example Java gateway) that required the import of proxy objects.

Note that the documentation for the old gateways has been removed from IRIS, so only the new $system.external interface is somewhat (i.e. insufficiently) documented.

Regarding the migration from old gateway to new  $system.external interface the documentation says:

I'm converting a .NET gateway interface (call .NET code from IRIS) from the old "Caché style" that use imported proxy class to the new $system.external .NET gateway as documented in:

https://docs.intersystems.com/iris20221/csp/docbook/DocBook.UI.Page.cls…

For simple case it works and I'm fine, unfortunately I don't understand how to implement/access .NET arrays from IRIS and unfortunately the documentation has no info whatsoever on how to work with arrays.

New to coding in InterSystems IRIS® data platform? Try this brand-new learning program to get the basics, and see how to develop an application with InterSystems ObjectScript alongside your language of choice: Java, .NET, Python, or Node.js. 

Try a hands-on exercise in the language of your choice to get familiar with the multi-model architecture of InterSystems IRIS!

These recently updated exercises are available in ObjectScript, Python, Java, and .NET.

I'm at a loss with configuring the IRIS ODBC driver (v02.10) on my Amazon Linux machine, connecting to a REMOTE IRIS backend.  It should be simplified by not requiring a DSN (the app uses a DSN-less connection and generates the connection string).  I have

We are updating a C# module which creates consumes an OdbcConnection from System.Data.Odbc.  This module used to create a DSN-less connection through the InterSystems Cache driver, and we are updating it to call the IRIS ODBC35 driver following migration of the target database.

The Cache connection was formed formatted as follows:

"DRIVER={InterSystems ODBC};SERVER=[server_address];DATABASE=[cache_namespace];UID=$uid$;PWD=$pwd$;"

When trying to simply update the connection string to replace the DRIVER value to "{InterSystems IRIS ODBC35}" we get the following error:
 

hi! 

I am going to develop a ASP .NET Core Application. In that Hos can use IRIS Entity Framework. I searched but I couldn’t find IRIS Entity Framework for .Net Core . Please kindly help me to overcome this issue.

thank you in advance 

Hey Community,

Watch this video to see how to connect to InterSystems Cloud Services from your .NET application using the InterSystems ADO.NET Managed Provider:

⏯ Connecting to InterSystems Cloud Services with .NET

I have updated some legacy VB/ASP.NET code and changed the references of InterSystems.Data.CacheClient to InterSystems.Data.IRISClient.  I am struggling with the code as I am not a .NET expert and there is little or no documentation.

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

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.

Hi Developers,

See how the Production Extension framework (PEX) allows you to build custom interoperability components in .NET or Java without first learning ObjectScript.

With PEX, you can code in a familiar language and take advantage of established code libraries to add components to a production.

⏯ What is PEX