For more details, please visit How to Add Watermark in PowerPoint Presentation using .NET REST API.
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| // For more examples, please visit https://github.com/aspose-slides-cloud | |
| // Get client credentials from https://dashboard.aspose.cloud/ | |
| string clientSecret = "7f098199230fc5f2175d494d48f2077c"; | |
| string clientID = "ee170169-ca49-49a4-87b7-0e2ff815ea6e"; | |
| // create an instance of SlidesApi | |
| SlidesApi slidesApi = new SlidesApi(clientID, clientSecret); | |
| // Input PowerPoint presentation from local drive | |
| String inputFile = "convertedFile.pptx"; | |
| // load the content of PPT in stream instance | |
| var inputPowerPoint = System.IO.File.OpenRead(inputFile); | |
| // Text watermark formatting details | |
| // font height for the text watermark | |
| int fontHeight = 30; | |
| // Text content to be added as watermark | |
| string watermarkText = "Confidential !"; | |
| // name of font to be used for watermarking | |
| string fontName = "Arial"; | |
| // foregound color for watermark text | |
| string fontColor = "Red"; | |
| // call the API to add text watermark to all the slide of PowerPoint presentation | |
| var response = slidesApi.CreateWatermarkOnline(inputPowerPoint,null,fontHeight, watermarkText, fontName, fontColor); | |
| // call method to save output on local drive | |
| saveToDisk(response, "/Users/nayyer/watermarked.pptx"); | |
| // method to save stream content to file on local drive | |
| public static void saveToDisk(Stream responseStream, String resultantFile) | |
| { | |
| var fileStream = File.Create(resultantFile); | |
| responseStream.Seek(0, SeekOrigin.Begin); | |
| responseStream.CopyTo(fileStream); | |
| fileStream.Close(); | |
| } |
| How to add Text or Image watermark to PowerPoint presentation using .NET REST API |
