Aspose.Slides.Examples.CSharp.Text.RuleBasedFontsReplacement.Run C# (CSharp) Method

        public static void Run()
        {
            // The path to the documents directory.
            string dataDir = RunExamples.GetDataDir_Text();

            // ExStart:RuleBasedFontsReplacement
            // Load presentation
            Presentation presentation = new Presentation(dataDir + "Fonts.pptx");

            // Load source font to be replaced
            IFontData sourceFont = new FontData("SomeRareFont");

            // Load the replacing font
            IFontData destFont = new FontData("Arial");

            // Add font rule for font replacement
            IFontSubstRule fontSubstRule = new FontSubstRule(sourceFont, destFont, FontSubstCondition.WhenInaccessible);

            // Add rule to font substitute rules collection
            IFontSubstRuleCollection fontSubstRuleCollection = new FontSubstRuleCollection();
            fontSubstRuleCollection.Add(fontSubstRule);

            // Add font rule collection to rule list
            presentation.FontsManager.FontSubstRuleList = fontSubstRuleCollection;

            // Arial font will be used instead of SomeRareFont when inaccessible
            Bitmap bmp = presentation.Slides[0].GetThumbnail(1f, 1f);

            // ExEnd:RuleBasedFontsReplacement
            // Save the image to disk in JPEG format
            bmp.Save(dataDir + "Thumbnail_out.jpg", System.Drawing.Imaging.ImageFormat.Jpeg);
        }
    }