Dynamics 365 Get Current User from C#

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In Dynamics 365 when running C# code, you may want to get the current user. We will go through an example if we were to run this from a console app.

First, create a new console app in Visual Studio:

From NuGet, add:

  • Microsoft.CrmSdk.CoreAssemblies
  • Microsoft.CrmSdk.XrmTooling.CoreAssembly

Add using:

using Microsoft.Xrm.Tooling.Connector;
using Microsoft.Xrm.Sdk;
using Microsoft.Crm.Sdk.Messages;
using Microsoft.Xrm.Sdk.Query;

Add the code. We will first get the user id, then perform a retrieve to get the user’s name:

                var connectionString = @"AuthType = Office365; Url = https://yourtenant.crm.dynamics.com/;Username=yourusername;Password=yourpassword";
                CrmServiceClient conn = new CrmServiceClient(connectionString);

                IOrganizationService service;
                service = (IOrganizationService)conn.OrganizationWebProxyClient != null ? (IOrganizationService)conn.OrganizationWebProxyClient : (IOrganizationService)conn.OrganizationServiceProxy;

                // Get a system user to send the email (From: field)
                WhoAmIRequest systemUserRequest = new WhoAmIRequest();
                WhoAmIResponse systemUserResponse = (WhoAmIResponse)service.Execute(systemUserRequest);
                Guid userId = systemUserResponse.UserId;

                // Lookup User
                var User = service.Retrieve("systemuser", userId, new ColumnSet("fullname"));
                string fullName = User["fullname"].ToString();

            catch (Exception ex)
                // Implement error handling 

This will output:



Carl de Souza is a developer and architect focusing on Microsoft Dynamics 365, BI, Web, Cloud and Data Science.

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