GroupDocs.Viewer For .NET 16.11 Release Notes

This page contains release notes for GroupDocs.Viewer for .NET 16.11.0.

Major Features

There are 2 new features and 15 improvements and fixes in this regular monthly release. The most notable are:

Ability to set default font when rendering Email documents
OTP (OpenDocument Presentation Template) file format rendering support
Improved public API of ViewerConfig class and IInputDataHandler interface
When rendering two documents in one browser page CSS classes are not overriding

Full List of Issues Covering all Changes in this Release

Key	Summary	Category
VIEWERNET-955	Ability to set default font when rendering Email documents	New Feature
VIEWERNET-849	Add OTP format support	New Feature
VIEWERNET-966	Improve public API of ViewerConfig class	Improvement
VIEWERNET-963	Improve rendering CAD (dwg, dxf) documents to Pdf	Improvement
VIEWERNET-957	Improve public API of IInputDataHandler interface	Improvement
VIEWERNET-927	Display HTML pages of two different documents in the same page in browser without overriding css classes	Improvement
WEB-2447	The background is missed for IE 11	Bug
WEB-2109	Special characters like accents, umlauts and circumflex are displayed incorrectly when saving specific PDF to HTML	Bug
WEB-1398	A ligature is shown incorrectly in HTML produced from PDF	Bug
VIEWERNET-979	Invalid characters while rendering Word document into HTML	Bug
VIEWERNET-958	Throws unsupported file format exception when loading specific doc file	Bug
VIEWERNET-956	Getting exception “File type ‘doc’ is not supported”	Bug
VIEWERNET-949	Parameter is not valid exception when rendering xlsx to image	Bug
VIEWERNET-877	Extra blank page created when convering dwg to pdf.	Bug
VIEWERNET-848	Failed to convert wmf file to image in Asp.Net application.	Bug
VIEWERNET-847	Incorrect Rendering of Radio Buttons, Checkboxes and their Label into Html	Bug
VIEWERNET-775	No text when converting Pdf to Html with FontAbsorber	Bug

Public API and Backward Incompatible Changes

LoadFileTree method is obsolete starting from version 16.11.0 and it is replaced with GetFileList method.
GetFileList method retrieves files and directories for specified path (or GroupDocs.Viewer’s storage path) and works identically in ViewerImageHandler and ViewerHtmlHandler

Ability to set default font when rendering Email documents

Default font name may be specified in this cases:

You want to generally specify the default font to fall back on if a particular font in a document cannot be found during rendering.
Your document uses fonts that contain non-English characters and you want to make sure any missing font is replaced with one that has the same character set available.

// Setup GroupDocs.Viewer config
ViewerConfig config = new ViewerConfig();
config.StoragePath = @"C:\storage";
config.DefaultFontName = "Calibri";

Improved Public APIs

Improve public API of ViewerConfig classPublic API changes:
1. Class GroupDocs.Viewer.Config.ViewerConfig property public string TempFolderName marked as ‘Obsolete’
2. Class GroupDocs.Viewer.Config.ViewerConfig property public string TempPath marked as ‘Obsolete’
Improve public API of IInputDataHandler interface Public API changes:
1. Class ViewerImageHandler/ViewerHtmlHandler method FileListContainer GetFileList() added
2. Class_ViewerImageHandler/ViewerHtmlHandler_ method GetFileList(FileListOptions fileListOptions) added
3. Class ViewerImageHandler/ViewerHtmlHandler method FileTreeContainer LoadFileTree() marked as ‘Obsolete’
4. Class ViewerImageHandler/ViewerHtmlHandler method FileTreeContainer LoadFileTree(FileTreeOptions fileTreeOptions) marked as ‘Obsolete’
5. Class GroupDocs.Viewer.Domain.Containers.FileTreeContainer marked as ‘Obsolete’
6. Class GroupDocs.Viewer.Domain.Options.FileTreeOptions marked as ‘Obsolete’
7. Interface GroupDocs.Viewer.Handler.Input.IInputDataHandler method SaveDocument(CachedDocumentDescription cachedDocumentDescription, Stream documentStream) marked as ‘Obsolete’
8. Interface GroupDocs.Viewer.Handler.Input.IInputDataHandler method LoadFileTree(FileTreeOptions fileTreeOptions) marked as ‘Obsolete’
9. Interface GroupDocs.Viewer.Handler.Input.IInputDataHandler method void AddFile(string guid, Stream content) added
10. Interface GroupDocs.Viewer.Handler.Input.IInputDataHandler method List GetEntities(string path) added

Get file list

LoadFileTree method is obsolete starting from version 16.11.0 and it is replaced with GetFileList method.

GetFileList method retrieves files and directories for specified path (or GroupDocs.Viewer’s storage path) and works identically in ViewerImageHandler and ViewerHtmlHandler

Load file list for ViewerConfig.StoragePath

// Setup GroupDocs.Viewer config
ViewerConfig config = new ViewerConfig();
config.StoragePath = @"C:\storage";

// Create image handler
ViewerImageHandler imageHandler = new ViewerImageHandler(config);

// Load file list for ViewerConfig.StoragePath
FileListContainer container = imageHandler.GetFileList();
foreach (var node in container.Files)
{
    if (node.IsDirectory)
    {
        Console.WriteLine("Guid: {0} | Name: {1} | LastModificationDate: {2}",
            node.Guid,
            node.Name,
            node.LastModificationDate);
    }
    else
        Console.WriteLine("Guid: {0} | Name: {1} | Document type: {2} | File type: {3} | Extension: {4} | Size: {5} | LastModificationDate: {6}",
            node.Guid,
            node.Name,
            node.DocumentType,
            node.FileType,
            node.Extension,
            node.Size,
            node.LastModificationDate);
}

Load file list for custom path

// Setup GroupDocs.Viewer config
ViewerConfig config = new ViewerConfig();
config.StoragePath = @"C:\storage";

// Create image handler
ViewerImageHandler imageHandler = new ViewerImageHandler(config);

// Load file list for custom path
FileListOptions options = new FileListOptions(@"D:\");
FileListContainer container = imageHandler.GetFileList(options);
foreach (var node in container.Files)
{
    if (node.IsDirectory)
    {
        Console.WriteLine("Guid: {0} | Name: {1} | LastModificationDate: {2}",
            node.Guid,
            node.Name,
            node.LastModificationDate);
    }
    else
        Console.WriteLine("Guid: {0} | Name: {1} | Document type: {2} | File type: {3} | Extension: {4} | Size: {5} | LastModificationDate: {6}",
            node.Guid,
            node.Name,
            node.DocumentType,
            node.FileType,
            node.Extension,
            node.Size,
            node.LastModificationDate);
}

Load file list for custom path with order

// Setup GroupDocs.Viewer config
ViewerConfig config = new ViewerConfig();
config.StoragePath = @"C:\storage";

// Create image handler
ViewerImageHandler imageHandler = new ViewerImageHandler(config);

// Load file list sorted by Name and ordered Ascending for custom path
FileListOptions options = new FileListOptions(@"D:\", FileListOptions.FileListSortBy.Name, FileListOptions.FileListOrderBy.Ascending);
FileListContainer container = imageHandler.GetFileList(options);
foreach (var node in container.Files)
{
    if (node.IsDirectory)
    {
        Console.WriteLine("Guid: {0} | Name: {1} | LastModificationDate: {2}",
            node.Guid,
            node.Name,
            node.LastModificationDate);
    }
    else
        Console.WriteLine("Guid: {0} | Name: {1} | Document type: {2} | File type: {3} | Extension: {4} | Size: {5} | LastModificationDate: {6}",
            node.Guid,
            node.Name,
            node.DocumentType,
            node.FileType,
            node.Extension,
            node.Size,
            node.LastModificationDate);
}