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MattB-MSFT
Employee
Employee

Announcing the .net Core SDK for Common Data Service (CDS) - External Client Development

This Post has been superseded by net-SDK-for-Dataverse-Dataverse-ServiceClient 

 

 

Folks, 

As many of you know, we have a existing .net full framework SDK that we provide for folks to develop client applications that communicate with CDS.  This SDK has existed for a long period and arose from the Dynamics 365 aspects of our platform. 

We have continued to support this SDK over the last many years over many versions of our platform.   

 

We have been working to update this SDK package to better address the needs of the current platform and the technologies that many of our partners who develop client applications to integrate with the Power Platform use.   We are now ready to share this with the larger community for testing and feedback. 

 

Today we have posted the alpha version of the Microsoft.Powerplatform.Cds.Client on nuget.  along with a few additional packages that we are using to split out the Dynamics Sales / Service and Marketing centric messages and helpers from the core CDS platform SDK

 

This version of the SDK libs supports the following and has the following notices: 

  1. .net full framework 4.6.2, 4.7.2, 4.8 and .net core 3.0, 3.1 
  2. We are supporting only Client Secret / Cert flows for .net core.  On .net framework additionally we support OAuth User flows
  3. We are shipping the initial drop using ADAL.net for the Auth Lib.   We MAY change to use MSAL shortly 
    1. MSAL would enabled us to support User Interactive flows on .net core. 
  4. The Namespaces of areas WILL change.  We do not know what they will change too just yet but they will change before we “release” this.
  5. The Assembly Names Will likely change at least once more. 
  6. The Message types that are part of the client have been reduced to CDS Core server messages only.  Things like “QualifyLeadRequest” have been removed to their own Nuget package ( Microsoft.Dynamics.Sdk.Messages ) 
  7. We will likely ship more extension packages that will contain the “CRM” messages,  though over time, we will likely split the namespaces of those messages up based on service line,  think Field Service or Sales or Customer Service, etc..
  8. Plugin Development using this Client is NOT supported at this time. 

We have pushed the first version up to nuget,  its tagged as preview and I encourage you to read the release notes we provide with the nuget packages. As with most of our Nuget packages that are intended as tools or for developer consumption, we extensively comment in release notes. 

 

Samples and such will be updated overtime on the PowerApps Samples GitHub Site as we move forward with the evolution of this capability.   That said, any of the existing CrmServiceClient samples can be used as a base to start.

 

From a scenario point of view,  we are particularity interested in any issues or challenges when using these library in either Asp.net Core or Functions scenarios. 

 

Links for the packages:

https://www.nuget.org/packages/Microsoft.Powerplatform.Cds.Client

https://www.nuget.org/packages/Microsoft.Powerplatform.Cds.Client.Dynamics

https://www.nuget.org/packages/Microsoft.Dynamics.Sdk.Messages

 

for 99% of your applications working against Dynamics, you should only need Microsoft.Powerplatform.Cds.Client and Microsoft.Dynamics.Sdk.Messages.

if your working against CDS Only,  you should only need Microsoft.Powerplatform.Cds.Client.  If you do not experience that, or find missing messages in the CDS only scenarios, please let us know. 

 

Note: Please be aware that during the Alpha \ Beta phases, these nuget packages are not supported via official channels

Support is aware of them, however you will likely be directed back to the community forums for support during the Alpha \ Beta phases.  A number of our dev's and PM's do monitor this channel and can respond to questions and feedback. 

 

As we progress this process it is our intent to deprecate then retire the older Microsoft.Xrm.Tooling.* Packages and replace them with updates built on this new set of Nuget Packages. 

 

Thanks All, and we look forward to your feedback on this.

 

Update:  We have setup a github issues site to track issues for this effort: 

Update#2:  We have now begun posting the code for the CdsServiceClient on this git Hub repro for reference. 

Please find the site here: https://github.com/microsoft/PowerPlatform-CdsServiceClient 

 

MattB-MSFT.  

 

47 REPLIES 47

@ben-thompson The customer is not running Claims/IFD, so no the steps have not been followed. And is not planned in the near future. (If it aint broken don't fix it, is the view at the customer)

 

When that is said, without having tried, Certificates could solve part of the problem. But the customer has a large set of Asp.net pages, passing AD credential directly to CRM. So here Certificates would not help. 

 

But thanks for feedback

@Menik1  

Async support is a bit of an odd thing for us.   Short answer is yes its something we are looking at.

No time frame at this point as there are number of challenges we need resolve. 

 

@Toftager  OnPrem is not the current focus of the updated SDK.  

As we look forward with it, we are considering adding Active Directory support. 

Currently for OnPrem, we have advised our customers to use an IFD configuration with oAuth Enabled to connect.   This alpha will connect that way.   That will allow you to use ( on full framework ) UID/PW, Cert, and Client Secret. 

 

@kevind2000 That is not accurate.  While we do have a Pipeline system to run plugins, plugins do not have anything to do with WCF itself.  Inside a Plugin you have a IOrganizationService to work with, which gives you access to the API endpoint.  Plugins are not going away and, as I said, are being heavily invested in. 

 

 @AhmadAnwar F# is not on the short list for support at this time.  However I will pass it along to the plugin runtime team. 

@MattB-MSFT Thanks for the feed back. I'll have to push for the customer to move to claims/ifd. 

 

I understand that AD Support is way down on the list, so I won't hold my breath waiting for this 😊

BetimBeja
Advocate II
Advocate II

Hello,

I know the package is still in alpha but one thing that is not working as of release 0.0.1.7-Alpha is the impersonation. Meaning that when you try setting CdsServiceClient.CallerId the call gets ignored and this property is always Guid.Empty. I did the test using the ClientSecret authentication and the application has been given the user_impersonation grant in AD.

 

I hope there will be a GitHub repo for this to better report issues 🙂

 

Best regards,

Betim Beja.

@BetimBeja  Could you /r me with a bit more details on what your doing please? 

We have validated that this works for both CallerID and AADObjectID' and that the server react's correctly. 

 

thanks

MattB

Hello @MattB-MSFT 

this is the code I tried:

using Microsoft.Powerplatform.Cds.Client;
using Microsoft.Xrm.Sdk;
using Microsoft.Xrm.Sdk.Query;
using System;

namespace CDS.Core_Test
{
    class Program
    {
        static void Main(string[] args)
        {
            var cdsClient = new CdsServiceClient("AuthType = ClientSecret; ClientId=0de61874-fb6b-42e4-8f14-265aff952e96; RedirectUri=Authentiman://auth; Url = https://****.crm4.dynamics.com; ClientSecret=****; TokenCacheStorePath=c:\\MyTokenCache;LoginPrompt=Auto");
            if (cdsClient.IsReady)
            {
                Console.WriteLine("Hello, connected to CDS using .NET Core");
                cdsClient.CallerId = Guid.Parse("bc1809ae-552f-48d0-8f2d-75bf4f6f927b");
                Entity newAccount = new Entity("account");
                newAccount["name"] = "Test .NET Core";
                cdsClient.Create(newAccount);

                QueryExpression query = new QueryExpression("account");
                query.ColumnSet = new ColumnSet(true);
                var response = cdsClient.RetrieveMultiple(query);
                foreach (var item in response.Entities)
                {
                    Console.WriteLine($"Account: {item.GetAttributeValue<string>("name")} [{item.GetAttributeValue<EntityReference>("ownerid").Name}]");
                }
            }
            else
            {
                Console.WriteLine("Failed to connect to CDS using .NET Core :(");
            }


            Console.ReadKey();
        }
    }
}

I attached a screenshot of the incorrect behaviour.

 

Let me know if you need any more information regarding this.

 

Best regards,

Betim Beja.

Hello again @MattB-MSFT ,

the impersonation feature seems to be working fine when using CallerAADObjectId. See the screenshot attached.

 

Best regards,

Betim Beja.

Anonymous
Not applicable

Hello,

First thank you for the work that you have done, i have tried to connect to dynamics using ClientSecret 

string connectionstring = ConfigurationManager.ConnectionStrings["connectionVSMPAuth"].ConnectionString;
                        sp = new CdsServiceClient(connectionstring);

I get error system.ServiceModel.Security.MessageSecurityException: The HTTP request was forbidden with client authentication scheme 'Anonymous'. despite in the doc CdsServiceClient support ClientSecret and certificate authentification 

Cordially


This looks ( on the surface ) like a TLS error. 

Can you add this to your code before you try to connect?

System.Net.ServicePointManager.SecurityProtocol = System.Net.SecurityProtocolType.Tls12 ;

 

thanks

Hello @Anonymous ,

I wrote about "The HTTP request was forbidden with client authentication scheme 'Anonymous'" in a LinkedIn article. Basically the problem is you have not created your application user in you dynamics instance yet. @MattB-MSFT the error message is very missleading in this case.

 

Best regards,

Betim Beja.

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