Azure Ai Document Intelligence Dotnet

using Azure.Identity;using Azure.AI.DocumentIntelligence;
string endpoint = Environment.GetEnvironmentVariable("DOCUMENT_INTELLIGENCE_ENDPOINT");// Local dev: DefaultAzureCredential. Production: set AZURE_TOKEN_CREDENTIALS=prod or AZURE_TOKEN_CREDENTIALS=<specific_credential>var credential = new DefaultAzureCredential(    DefaultAzureCredential.DefaultEnvironmentVariableName);// Or use a specific credential directly in production:// See https://learn.microsoft.com/dotnet/api/overview/azure/identity-readme?view=azure-dotnet#credential-classes// var credential = new ManagedIdentityCredential();var client = new DocumentIntelligenceClient(new Uri(endpoint), credential);

string endpoint = Environment.GetEnvironmentVariable("DOCUMENT_INTELLIGENCE_ENDPOINT");string apiKey = Environment.GetEnvironmentVariable("DOCUMENT_INTELLIGENCE_API_KEY");var client = new DocumentIntelligenceClient(new Uri(endpoint), new AzureKeyCredential(apiKey));

using Azure.AI.DocumentIntelligence;
Uri invoiceUri = new Uri("https://example.com/invoice.pdf");
Operation<AnalyzeResult> operation = await client.AnalyzeDocumentAsync(    WaitUntil.Completed,     "prebuilt-invoice",     invoiceUri);
AnalyzeResult result = operation.Value;
foreach (AnalyzedDocument document in result.Documents){    if (document.Fields.TryGetValue("VendorName", out DocumentField vendorNameField)        && vendorNameField.FieldType == DocumentFieldType.String)    {        string vendorName = vendorNameField.ValueString;        Console.WriteLine($"Vendor Name: '{vendorName}', confidence: {vendorNameField.Confidence}");    }
    if (document.Fields.TryGetValue("InvoiceTotal", out DocumentField invoiceTotalField)        && invoiceTotalField.FieldType == DocumentFieldType.Currency)    {        CurrencyValue invoiceTotal = invoiceTotalField.ValueCurrency;        Console.WriteLine($"Invoice Total: '{invoiceTotal.CurrencySymbol}{invoiceTotal.Amount}'");    }        // Extract line items    if (document.Fields.TryGetValue("Items", out DocumentField itemsField)        && itemsField.FieldType == DocumentFieldType.List)    {        foreach (DocumentField item in itemsField.ValueList)        {            var itemFields = item.ValueDictionary;            if (itemFields.TryGetValue("Description", out DocumentField descField))                Console.WriteLine($"  Item: {descField.ValueString}");        }    }}

Uri fileUri = new Uri("https://example.com/document.pdf");
Operation<AnalyzeResult> operation = await client.AnalyzeDocumentAsync(    WaitUntil.Completed,     "prebuilt-layout",     fileUri);
AnalyzeResult result = operation.Value;
// Extract text by pageforeach (DocumentPage page in result.Pages){    Console.WriteLine($"Page {page.PageNumber}: {page.Lines.Count} lines, {page.Words.Count} words");        foreach (DocumentLine line in page.Lines)    {        Console.WriteLine($"  Line: '{line.Content}'");    }}
// Extract tablesforeach (DocumentTable table in result.Tables){    Console.WriteLine($"Table: {table.RowCount} rows x {table.ColumnCount} columns");    foreach (DocumentTableCell cell in table.Cells)    {        Console.WriteLine($"  Cell ({cell.RowIndex}, {cell.ColumnIndex}): {cell.Content}");    }}

Operation<AnalyzeResult> operation = await client.AnalyzeDocumentAsync(    WaitUntil.Completed,     "prebuilt-receipt",     receiptUri);
AnalyzeResult result = operation.Value;
foreach (AnalyzedDocument document in result.Documents){    if (document.Fields.TryGetValue("MerchantName", out DocumentField merchantField))        Console.WriteLine($"Merchant: {merchantField.ValueString}");            if (document.Fields.TryGetValue("Total", out DocumentField totalField))        Console.WriteLine($"Total: {totalField.ValueCurrency.Amount}");            if (document.Fields.TryGetValue("TransactionDate", out DocumentField dateField))        Console.WriteLine($"Date: {dateField.ValueDate}");}

var adminClient = new DocumentIntelligenceAdministrationClient(    new Uri(endpoint),     new AzureKeyCredential(apiKey));
string modelId = "my-custom-model";Uri blobContainerUri = new Uri("<blob-container-sas-url>");
var blobSource = new BlobContentSource(blobContainerUri);var options = new BuildDocumentModelOptions(modelId, DocumentBuildMode.Template, blobSource);
Operation<DocumentModelDetails> operation = await adminClient.BuildDocumentModelAsync(    WaitUntil.Completed,     options);
DocumentModelDetails model = operation.Value;
Console.WriteLine($"Model ID: {model.ModelId}");Console.WriteLine($"Created: {model.CreatedOn}");
foreach (var docType in model.DocumentTypes){    Console.WriteLine($"Document type: {docType.Key}");    foreach (var field in docType.Value.FieldSchema)    {        Console.WriteLine($"  Field: {field.Key}, Confidence: {docType.Value.FieldConfidence[field.Key]}");    }}

string classifierId = "my-classifier";Uri blobContainerUri = new Uri("<blob-container-sas-url>");
var sourceA = new BlobContentSource(blobContainerUri) { Prefix = "TypeA/train" };var sourceB = new BlobContentSource(blobContainerUri) { Prefix = "TypeB/train" };
var docTypes = new Dictionary<string, ClassifierDocumentTypeDetails>(){    { "TypeA", new ClassifierDocumentTypeDetails(sourceA) },    { "TypeB", new ClassifierDocumentTypeDetails(sourceB) }};
var options = new BuildClassifierOptions(classifierId, docTypes);
Operation<DocumentClassifierDetails> operation = await adminClient.BuildClassifierAsync(    WaitUntil.Completed,     options);
DocumentClassifierDetails classifier = operation.Value;Console.WriteLine($"Classifier ID: {classifier.ClassifierId}");

string classifierId = "my-classifier";Uri documentUri = new Uri("https://example.com/document.pdf");
var options = new ClassifyDocumentOptions(classifierId, documentUri);
Operation<AnalyzeResult> operation = await client.ClassifyDocumentAsync(    WaitUntil.Completed,     options);
AnalyzeResult result = operation.Value;
foreach (AnalyzedDocument document in result.Documents){    Console.WriteLine($"Document type: {document.DocumentType}, confidence: {document.Confidence}");}

// Get resource detailsDocumentIntelligenceResourceDetails resourceDetails = await adminClient.GetResourceDetailsAsync();Console.WriteLine($"Custom models: {resourceDetails.CustomDocumentModels.Count}/{resourceDetails.CustomDocumentModels.Limit}");
// Get specific modelDocumentModelDetails model = await adminClient.GetModelAsync("my-model-id");Console.WriteLine($"Model: {model.ModelId}, Created: {model.CreatedOn}");
// List modelsawait foreach (DocumentModelDetails modelItem in adminClient.GetModelsAsync()){    Console.WriteLine($"Model: {modelItem.ModelId}");}
// Delete modelawait adminClient.DeleteModelAsync("my-model-id");

using Azure;
try{    var operation = await client.AnalyzeDocumentAsync(        WaitUntil.Completed,         "prebuilt-invoice",         documentUri);}catch (RequestFailedException ex){    Console.WriteLine($"Error: {ex.Status} - {ex.Message}");}