C# Azure AI Translation - Batch Translate files

Program.cs

using Azure;
using Azure.AI.Translation.Document;

/// <summary>
/// This program demonstrates how to use Azure's Document Translation service to translate documents
/// stored in an Azure Blob Storage container from one language to another.
/// It authenticates using a custom endpoint and resource key, then submits a translation job,
/// waits for completion, and prints the status and results for each document.
/// https://learn.microsoft.com/en-us/azure/ai-services/translator/document-translation/how-to-guides/use-rest-api-programmatically?tabs=csharp
/// https://learn.microsoft.com/en-us/dotnet/api/overview/azure/ai.translation.document-readme?view=azure-dotnet
/// 
/// When sensitivity label is set on pdf files, it may not translate the document.
/// </summary>
class Program
{
    // Connection information for the Document Translation service
    private static readonly string endpoint = "https://<ai-foundry-resource>.cognitiveservices.azure.com/";
    private static readonly string key = "xxxxxxxxxxxxxxxxxxxxxxxx";

    // Connection information for the Azure Blob Storage containers, Input and Output folders
    private static readonly string blobContainerSasUrl_Input = "https://<storage-account-blob-store-type>.blob.core.windows.net/<container-input>?sp=xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx";
    private static readonly string blobContainerSasUrl_Output = "https://<storage-account-blob-store-type>.blob.core.windows.net/<container-output>?sp=xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx";

    // The target language code for translation.
    private static readonly string targetLanguageCode = "en"; // "zh-Hans";

    static async Task Main(string[] args)
    {
        //Blob container SAS URL
        Uri sourceUri = new Uri(blobContainerSasUrl_Input);

        //Blob container SAS URL
        Uri targetUri = new Uri(blobContainerSasUrl_Output);

        // initialize a new instance  of the DocumentTranslationClient object to interact with the Document translation feature
        DocumentTranslationClient client = new DocumentTranslationClient(new Uri(endpoint), new AzureKeyCredential(key));

        // initialize a new instance of the `DocumentTranslationInput` object to provide the location of input for the translation operation
        DocumentTranslationInput input = new DocumentTranslationInput(sourceUri, targetUri, targetLanguageCode);

        // initialize a new instance of the DocumentTranslationOperation class to track the status of the translation operation
        DocumentTranslationOperation operation = await client.StartTranslationAsync(input);

        await operation.WaitForCompletionAsync();

        await ConsoleReporting(operation); // Change from ConsoleReporting(operation); to await ConsoleReporting(operation);
    }

    /// <summary>
    /// Outputs the status and results of the document translation operation to the console.
    /// </summary>
    private static async Task ConsoleReporting(DocumentTranslationOperation operation)
    {
        Console.WriteLine($"  Status: {operation.Status}");
        Console.WriteLine($"  Created on: {operation.CreatedOn}");
        Console.WriteLine($"  Last modified: {operation.LastModified}");
        Console.WriteLine($"  Total documents: {operation.DocumentsTotal}");
        Console.WriteLine($"    Succeeded: {operation.DocumentsSucceeded}");
        Console.WriteLine($"    Failed: {operation.DocumentsFailed}");
        Console.WriteLine($"    In Progress: {operation.DocumentsInProgress}");
        Console.WriteLine($"    Not started: {operation.DocumentsNotStarted}");

        await foreach (DocumentStatusResult document in operation.Value)
        {
            Console.WriteLine($"Document with Id: {document.Id}");
            Console.WriteLine($"  Status:{document.Status}");
            if (document.Status == DocumentTranslationStatus.Succeeded)
            {
                Console.WriteLine($"  Translated Document Uri: {document.TranslatedDocumentUri}");
                Console.WriteLine($"  Translated to language: {document.TranslatedToLanguageCode}.");
                Console.WriteLine($"  Document source Uri: {document.SourceDocumentUri}");
            }
            else
            {
                Console.WriteLine($"  Error Code: {document.Error.Code}");
                Console.WriteLine($"  Message: {document.Error.Message}");
            }
        }
    }
}