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iText 7 : How to add an image watermark to a PDF file?
8 Jul 2013 ... I'm using C# and iTextSharp to add a watermark to my PDF files: ... Image img = iTextSharp .text. Image .GetInstance( WatermarkLocation ); img.

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Windows Add a text watermark on PDF in C# sample in C# for ...
15 Oct 2014 ... Save Text from PowerPiont to .txt/.doc in C# ... This sample shows how to add text watermark on every PDF pages in a document using free Spire. PDF with C# . ... C# , ASP.NET, WPF, c# control.

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The result will be a fairly large, uncompressed movie that runs at 15fps If you want to put it online, you ll probably need to process it with a movie editor to compress it..

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8 Jun 2018 ... NET PDF Watermarker sample code project. Developers can add watermark to PDF in C# . For text signature, the text font name, font size, font ...

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} } private void CloseTempFile() { if (m_WriterOpen) { m_WriterClose(); m_WriterOpen = false; } } } } A requirement of this example is to allow commit and rollback logic for the file The approach that we ve taken with this class is to write data to a temporary file instead of the requested file When a commit takes place, the temporary file is closed, copied to the requested file path, and finally deleted If a rollback is necessary, we delete the temporary file To keep this example simple, we ve made the assumption that the output file does not already exist By making that assumption, we don t have to worry about backing up and restoring the original version of the file during a rollback Instead, we can delete the temporary (uncommitted) file.

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EndText(); // create the new page and add it to the pdf PdfImportedPage page = writer.GetImportedPage(reader, 1); cb.AddTemplate(page, 0, 0); // close the streams and voilá the file should be .... from the existing document using ( PdfReader reader = new PdfReader(pathin)) ... Watermark in PDF file is hiding behind images.

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3 Aug 2018 ... For example, you can apply a “Confidential” text to the pages with sensitive information. Syncfusion Essential PDF is a .NET PDF library used to create, read, and edit PDF documents. Using this library, you can add watermark to PDF file in C# and VB.

Adding a light-level sensor to the Arduino allows it to skip taking photos when it s too dark, which can be very handy if you re making a movie outside that you can t light artificially at night. Light-dependent resistors (LDRs) vary their resistance inversely to the amount of light that is falling on them: in other words, in bright light they have very low resistance and allow a current to flow, while in darkness they have very high resistance and prevent current from flowing. The schematic shows how to add an LDR so that it can be read using an analog input to detect the current light level. Connect an LDR so that one lead is connected to analog input 0 on the Arduino and the other lead is connected to the VCC (+5V) pin. Then connect a 10k resistor so that one pin connects to the analog input 0 and the other end goes to GND. What this will do is create a variable voltage divider that will present a low voltage to the analog input when it s dark and a high voltage when it s light. The voltage will also vary between those two extremes in partial lighting. You can then run the alternative example sketch, available from the Practical Arduino site, to have your Arduino only take photos when it is light. The takePhoto() function can then be extended to wrap its functionality inside an analog read so that if the voltage divider is above a certain level it will operate, but otherwise it will do nothing.

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14 Jan 2017 ... Add the following functions. using iTextSharp . text ; using iTextSharp . text . pdf ; using System.IO; public Paragraph AddParagragh(string ...

The constructor of our class is passed the full path to the output file that it should create It uses the path from this parameter to build a temporary file name A StreamWriter is opened using the name of the temporary file All writes are made to this temporary file The constructor also includes the code to enlist this class in an existing transaction This is where we create an instance of our resource manager class, FileResourceManager We ll look at the details of this class next After constructing the resource manager, we enlist it in the current transaction using the EnlistVolatile method Notice that we do this only if there is an active transaction This allows us to also use this class outside of a transaction The WriteString method is where we write a string to the open StreamWriter.

The Commit and Rollback methods finalize the state of this file resource The Commit method closes the temporary file and copies it to the permanent file path The temporary file is then deleted The Rollback method closes the temporary file and deletes it We ve also implemented the IDisposable interface and its Dispose method for this class This allows us to implement default behavior to clean up the temporary file if Commit is never called Now we can move on to the FileResourceManager class This is our resource manager that is enlisted into the current transaction Here is the C# implementation for this class: using System; using SystemTransactions; namespace DniScResource { public class FileResourceManager : IEnlistmentNotification { private CommittableFile m_File;.

void takePhoto() { if(analogRead(0) > 300) { digitalWrite(ledPin, HIGH); digitalWrite(focusPin, HIGH); digitalWrite(shutterPin, HIGH); delay(500); digitalWrite(ledPin, LOW); digitalWrite(shutterPin, LOW); digitalWrite(focusPin, LOW); } }