ATMLCommonLibrary.controls.ATMLPreviewPanel.Open C# (CSharp) Method

        public void Open( string fileName, string fileExtension, byte[] content )
        {
            _fileExtension = fileExtension;
            _fileName = fileName;
            _content = content;

            var encoding = new UTF8Encoding();

            const String sMSG_NOPREVIEW =
                "<h3 style=\"color:red;\" >Preview reader is unavailable for this file type.</h3>";
            const String sMSG_CANNOT_PREVIEW = "<h3 style=\"color:red;\" >Unable to preview this document.</h3>";
            const String sMSG_NO_LOCAL =
                "<h3 style=\"color:red;\" >You must have a local copy of this file to preview it.</h3>";
            //Need to use active document

            //String extension = fi.Extension.ToLower().Trim();
            var sourceTypes = (String) ATMLContext.GetProperty( "environment.source.filetypes" );
            var browserTypes = (String) ATMLContext.GetProperty( "environment.browser.filetypes" );
            var supportedTypes = (String) ATMLContext.GetProperty( "environment.supported.filetypes" );
            try
            {
                //if( string.IsNullOrEmpty( sourceTypes ) || )

                string extension = fileExtension.ToLower();
                if (!supportedTypes.Contains( extension ))
                {
                    PreviewHtml(
                        encoding.GetBytes( sMSG_NOPREVIEW + "<br />" + extension +
                                           " file types are not supported at this time." ) );
                }
                else
                {
                    String tempFileName = fileName;

                    if (sourceTypes.Contains( extension ))
                    {
                        sourcePreviewer.ConfigurationManager.Language = extension.Substring( 1 );
                        PreviewSource( encoding.GetString( content ), extension );
                    }
                    else
                    {
                        if (webBrowser.Document != null)
                        {
                            webBrowser.Document.OpenNew( true );
                        }
                        webBrowser.Navigate( "about:blank" );

                        try
                        {
                            using (new HourGlass())
                            {
                                Guid guid = GetPreviewHandlerGUID( fileName );
                                if (browserTypes.Contains( extension ))
                                    PreviewHtml( tempFileName );
                                else if (UTRSOfficeUtils.IsInstalled( UTRSOfficeUtils.MSOfficeApplications.Word )
                                         && UTRSOfficeUtils.IsWordDocument( extension ))
                                    PreviewHtml( UTRSOfficeUtils.OfficeDocToHtml( fileName,
                                                                                  UTRSOfficeUtils.MSOfficeApplications
                                                                                                 .Word ) );
                                else if (UTRSOfficeUtils.IsInstalled( UTRSOfficeUtils.MSOfficeApplications.Excel )
                                         && UTRSOfficeUtils.IsExcelDocument( extension ))
                                    PreviewHtml( UTRSOfficeUtils.OfficeDocToHtml( fileName,
                                                                                  UTRSOfficeUtils.MSOfficeApplications
                                                                                                 .Excel ) );
                                else if (UTRSOfficeUtils.IsInstalled( UTRSOfficeUtils.MSOfficeApplications.PowerPoint )
                                         && UTRSOfficeUtils.IsPowerPointDocument( extension ))
                                    PreviewHtml( UTRSOfficeUtils.OfficeDocToHtml( fileName,
                                                                                  UTRSOfficeUtils.MSOfficeApplications
                                                                                                 .PowerPoint ) );
                                else if (guid != Guid.Empty)
                                    PreView( guid, tempFileName );
                                else
                                {
                                    PreviewHtml(
                                        encoding.GetBytes( sMSG_NOPREVIEW +
                                                           "<br />Could not find a preview handler for " +
                                                           extension ) );
                                }
                            }
                        }
                        catch (Exception ee)
                        {
                            LogManager.Error( ee, sMSG_CANNOT_PREVIEW );
                            PreviewHtml(
                                encoding.GetBytes( sMSG_CANNOT_PREVIEW +
                                                   "<br />An error has occurred attempting to preview this document: <br />" +
                                                   ee.Message ) );
                        }
                    }
                }
            }
            catch (Exception e)
            {
                LogManager.Error( e, "Failed to open preview for file {0} ", fileName );
                LogManager.Debug(
                    "Error opening Preview. Data Dump:\n File Name: {0}{1}\nSource Types:{2}\nBrowser Types:{3}\nSupported Type:{4}\nStack Trace:\n{5}",
                    fileName, fileExtension, sourceTypes, browserTypes, supportedTypes, e.StackTrace );
            }
            Cursor = Cursors.Default;
        }