How to Connect to Dynamics 365 using C# Console Application?

Abhishek Dhoriya

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Article on How to connect to dynamics 365 from c#? In this article, we have explained how to connect to Dynamics CRM 365 online using C# example with a demo code as well?

Step by Step to connect Dynamics 365 CRM Online V9.X using C# Console Application

Pre-Requisites before you start writing code for connect to dynamics 365 from c#

Must have

Basic Functional understanding of Dynamics 365.
Basic programming knowledge on .NET with C# or any other Object-Oriented Programming language.
Visual Studio Community Edition 2015/2017 or Higher Installed.

Good to have

Dynamics 365 SDK Installed Video Here. SDK Download URL
Get Dynamics 365 trial instance here
Step by Step Setup Dynamics 365 trial instance setup URL

Step by Step: Connecting to Dynamics 365 using a C# Console App

Step 1: Open Visual Studio and Click on New Project. Click on Visual C# and select Console Application.
Give Name to the Project and click on OK.
Step 2: Go to Visual Studio Tools -> NuGet Package Manager and click on Package Manager Console.
Step 3: In Package Manager Console, Copy & Paste the below command to get the required CRM SDK Dlls and press Enter.
Click here to know the latest version of the CRM Dlls.
- Install-Package Microsoft.CrmSdk.CoreTools -Version 9.0.0.7
Step 4: Latest CRM SDK DLLs are installed in the project’s bin\coretools folder. You can also see the success message in the Package Manager Console.
Step 5: Right Click on References and navigate to the bin\coretools folder. Add the below Dlls to the Visual Studio project.
- Microsoft.Crm.Sdk.Proxy.dll
- Microsoft.Xrm.Sdk.dll
- System.Runtime.Serialization
- System.ServiceModel
Step 6: Add the below namespaces.
- using Microsoft.Xrm.SDK;
- using Microsoft.Xrm.SDK.Client;
- using Microsoft.CRM.SDK.Messages;
- using System.Net;
- using System.ServiceModel.Description;
Step 7: Copy and Paste the below code in the Main method.

IOrganizationService organizationService = null;
try
 {
 ClientCredentials clientCredentials = new ClientCredentials();
 clientCredentials.UserName.UserName = "<ProvideUserName>@<ProvideYourOrgName>.onmicrosoft.com";
 clientCredentials.UserName.Password = "<ProvideYourPassword>";
// For Dynamics 365 Customer Engagement V9.X, set Security Protocol as TLS12
 ServicePointManager.SecurityProtocol = SecurityProtocolType.Tls12;
// Get the URL from CRM, Navigate to Settings -> Customizations -> Developer Resources
// Copy and Paste Organization Service Endpoint Address URL
organizationService = (IOrganizationService)new OrganizationServiceProxy(new Uri("https://<ProvideYourOrgName>.api.<CRMRegion>.dynamics.com/XRMServices/2011/Organization.svc"),
 null, clientCredentials, null);
if (organizationService != null)
 {
 Guid userid = ((WhoAmIResponse)organizationService.Execute(new WhoAmIRequest())).UserId;
if (userid != Guid.Empty)
 {
 Console.WriteLine("Connection Successful!...");
 }
 }
 else
 {
 Console.WriteLine("Failed to Established Connection!!!");
 }
 }
 catch (Exception ex)
 {
 Console.WriteLine("Exception caught - " + ex.Message); 
 }
 Console.ReadKey();

Step 8: Right-click on the solution and build it. If the build is succeeded, Run the application to see the below Message.

Also, find More on Dynamix Academy :

You can also watch our Videos on playlist:

History of Microsoft Dynamics 365: https://bit.ly/2w0uwjL
Dynamics 365 – Custom Workflow Development Course: https://bit.ly/2w1Ixhh
Microsoft Dynamics CRM: https://bit.ly/2WPhcdF
Microsoft Dynamics 365 Business Central Introductory Course: https://bit.ly/2Q8s2cm
Plugin Development in Microsoft Dynamics 365: https://bit.ly/2VwIDYm