Resolving Client ID

In Response to https://github.com/MicrosoftDocs/azure-docs/issues/98904

Author: whhender

articles/data-lake-analytics/data-lake-analytics-manage-use-dotnet-sdk.md

@@ -47,13 +47,15 @@ Install-Package -Id Microsoft.Azure.Graph.RBAC -Version 3.4.0-preview
 string subid = "<Subscription ID>"; // Subscription ID (a GUID)
 string tenantid = "<Tenant ID>"; // AAD tenant ID or domain. For example, "contoso.onmicrosoft.com"
 string rg == "<value>"; // Resource  group name
-string clientid = "1950a258-227b-4e31-a9cf-717495945fc2"; // Sample client ID (this will work, but you should pick your own)
+string clientid = "abcdef01-2345-6789-0abc-def012345678"; // Sample client ID
 ```
 
 ## Authentication
 
 You have multiple options for logging on to Azure Data Lake Analytics. The following snippet shows an example of authentication with interactive user authentication with a pop-up.
 
+For ClientID you can either use the ID of a user, or the Application (Client) ID of a [service principal](/azure/active-directory/develop/howto-create-service-principal-portal#register-an-application-with-azure-ad-and-create-a-service-principal).
+
 ``` csharp
 using System;
 using System.IO;
@@ -72,7 +74,7 @@ using Microsoft.Azure.Graph.RBAC;
 public static Program
 {
    public static string TENANT = "microsoft.onmicrosoft.com";
-   public static string CLIENTID = "1950a258-227b-4e31-a9cf-717495945fc2";
+   public static string CLIENTID = "abcdef01-2345-6789-0abc-def012345678";
    public static System.Uri ARM_TOKEN_AUDIENCE = new System.Uri( @"https://management.core.windows.net/");
    public static System.Uri ADL_TOKEN_AUDIENCE = new System.Uri( @"https://datalake.azure.net/" );
    public static System.Uri GRAPH_TOKEN_AUDIENCE = new System.Uri( @"https://graph.windows.net/" );
@@ -438,4 +440,4 @@ adlaAccountClient.ComputePolicies.CreateOrUpdate(rg, adla, "GaryMcDaniel", newPo
 
 * [Overview of Microsoft Azure Data Lake Analytics](data-lake-analytics-overview.md)
 * [Manage Azure Data Lake Analytics using Azure portal](data-lake-analytics-manage-use-portal.md)
-* [Monitor and troubleshoot Azure Data Lake Analytics jobs using Azure portal](data-lake-analytics-monitor-and-troubleshoot-jobs-tutorial.md)
+* [Monitor and troubleshoot Azure Data Lake Analytics jobs using Azure portal](data-lake-analytics-monitor-and-troubleshoot-jobs-tutorial.md)