Retrieve Folders Contained in Outlook Data Files using C# .NET API
Tags: rendering, api, net, outlook
Published: 2018-12-31 11:55:21

---
title: Retrieve Folders Contained in Outlook Data Files using C# .NET API
published: true
description: post
tags: rendering, api, .net, outlook
---

Application developers can get the list of folders and sub-folders from OST and PST Outlook data files as well as render the messages from these folders to PDF, HTML and Image formats with the help of the latest release of the .NET document rendering API. Also, you can programmatically omit empty columns while rendering Microsoft Excel worksheets within your .NET apps to reduce processing time and optimize memory usage when working with large files using GroupDocs.Viewer for .NET – http://bit.ly/2UNFCDL

Refer to following code examples/snippets for more help on how to perform these tasks inside your applications.

Below code snippet shows how you can retrieve the list of folders:

`// Setup GroupDocs.Viewer config
ViewerConfig config = Utilities.GetConfigurations();
// Create image handler
ViewerImageHandler imageHandler = new ViewerImageHandler(config);
string guid = DocumentName;
// Get Outlook document info
OutlookDocumentInfoContainer documentInfoContainer = imageHandler.GetDocumentInfo(guid) as OutlookDocumentInfoContainer;
foreach (string folderName in documentInfoContainer.Folders)
    Console.WriteLine("Folder name: {0}", folderName);`

Here's how you can retrieve sub-folders list: 

`// Setup GroupDocs.Viewer config
ViewerConfig config = Utilities.GetConfigurations();
// Create image handler
ViewerImageHandler imageHandler = new ViewerImageHandler(config);
string guid = DocumentName;
// Create option object with specified folder name
DocumentInfoOptions options = new DocumentInfoOptions();
options.OutlookOptions.FolderName = "Inbox";
// Get outlook document info
OutlookDocumentInfoContainer documentInfoContainer = imageHandler.GetDocumentInfo(guid, options) as OutlookDocumentInfoContainer;
foreach (string folderName in documentInfoContainer.Folders)
    Console.WriteLine("Folder name: {0}", folderName);`

Below code snippet demonstrates how an email message from any of the retrieved folders can be rendered as an image:

`// Setup GroupDocs.Viewer config
ViewerConfig config = Utilities.GetConfigurations();
// Create image handler
ViewerImageHandler imageHandler = new ViewerImageHandler(config);
string guid = DocumentName;
// Create image options with specified folder name (use HtmlOptions to render into HTML)
ImageOptions options = new ImageOptions();
options.OutlookOptions.FolderName = "Inbox\\Sub Folder 1";
// Render document into image (List<PageHtml> is returned when rendering into HTML)
List<PageImage> pages = imageHandler.GetPages(guid, options);
foreach (PageImage page in pages)
{
    // Save each image at disk
    Utilities.SaveAsImage(page.PageNumber + "_" + DocumentName, page.Stream);
}`

To render a message as PDF, refer to following code example:

`// Setup GroupDocs.Viewer config
ViewerConfig config = Utilities.GetConfigurations();
// Create image handler
ViewerImageHandler imageHandler = new ViewerImageHandler(config);
string guid = DocumentName;
// Create pdf options with specified folder name
PdfFileOptions options = new PdfFileOptions();
options.OutlookOptions.FolderName = "Inbox";
// Get pdf document
FileContainer fileContainer = imageHandler.GetPdfFile(guid, options);
//Save file
Utilities.SaveFile(guid, fileContainer.Stream);`

YouTube video tutorials of the GroupDocs API – http://bit.ly/2UKFx3L