add watermark image to pdf using itextsharp c#

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Multiuser limitations: As you ve seen in the ADO.NET chapters, relational databases provide features to manage locking, inconsistent updates, and transactions. Comparatively, the web server s file system is woefully backward. Although you can allow multiple users to read a file at once, it s almost impossible to let multiple users update the same file at the same time without catastrophe. Scalability problems: File operations suffer from some overhead. In a simple scenario, file access may be faster than connecting to a database and performing a query. But when multiple users are working with files at the same time, these advantages disappear, and your web server may slow down dramatically. Security risks: If you allow the user to specify a file or path name, the user could devise a way to trick your application into accessing or overwriting a protected system file. Even without this ability, a malicious or careless user might use an ASP.NET page that creates or uploads files to fill up your web server hard drive and cause it to stop working. Of course, file access does have its uses. Maybe you need to access information that s already stored in a specific file and directory structure by another application (and you can t change that organization). Or maybe you don t have a local database, and you need to create only a small internal application (such as one hosted on an intranet). In this situation, you may be able to assume a smaller number of simultaneous users, as well as a set of trusted users who are less likely to try to battle your web server.

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asp.net: Watermark on a Exisiting PDF using iTextsharp Library
25 Feb 2011 ... Watermark on a Exisiting PDF using iTextsharp Library ... Creating a Template For Text Watermark ... 20, byte [] _templateBye = File . .... PDF Library, is another choice for c# developers, it's cheap and easy to ... Add comment ...

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C# demo to guide how to watermark PDF file, stamping text and image watermark to PDF document in C# language.

Many of the considerations mentioned previously apply to web applications that create their own files. However, the simplest level of file access just involves retrieving information about existing files and directories and performing typical file system operations such as copying files and creating directories. ASP.NET provides five basic classes for retrieving this sort of information. They are all located in the System.IO namespace (and, incidentally, can be used in desktop applications in exactly the same way they are used in web applications). The Directory and File classes provide shared methods that allow you to retrieve information about any files and directories visible from your server. The DirectoryInfo and FileInfo classes use similar instance methods and properties to retrieve the same sort of information. The DriveInfo class provides shared methods that allow you to retrieve information about a drive and the amount of free space it provides.

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c# add watermark to existing pdf file using itextsharp

Add Watermark Text to all pages of PDF in ASP.Net using C# and VB ...
This watermark or footer sholud be displayed in all pages of the downloaded pdf can ... iTextSharp : Add Page numbers to existing PDF using C# and VB. ... MapPath( "~/Image.jpg" ));. File .WriteAllBytes(sourceFilePath, bytes);.

add watermark to pdf using itextsharp c#

Add Water mark image to PDF using iTextsharp, C# and VB.Net in ASP ...
Hi All , I Have Create one Merge Pdf File, within that file i would like to add stamp to all pages, i have tried lots, but nver got the solution, please ...

In 3, you saw how a class can provide two types of members. Shared members are always available you just use the name of the class. To access an instance member, you need to create an object first and then access the property or method through the object s variable name. With the file access classes, shared methods are more convenient to use because they don t require you to create an instance of the class. On the other hand, if you need to retrieve several pieces of information, it s easier to use an instance. That way, you don t need to keep specifying the name of the directory or file each time you call a method. It s also faster. That s because the FileInfo and DirectoryInfo classes perform their security checks once when you create the object instance. The Directory and File classes perform a security check every time you invoke a method.

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[Solved] How to add watermark image in pdf file - CodeProject
You have to use itextsharp.dll for in .. Here is some example for applying watermark in pdf . Hide Copy Code. iTextSharp.text.Image img ...

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Add Water mark image to PDF using iTextsharp , C# and VB.Net in ASP ...
Create)); var image = iTextSharp . text .Image.GetInstance(watermarkImagePath); image.SetAbsolutePosition(200, 400); for (var i = 0; ...

There are a few caveats to using File Explorer: You cannot create directories through this tool. You will either need to use adb shell or create them from within your application. While you can putter through most of the files on an emulator, you can access very little outside /sdcard on an actual device, due to Android security restrictions.

The main purpose of the Code Review and Model Update milestone is to synchronize the code and the model before the next iteration begins. This ongoing effort to keep the design tight prevents entropy, or code rot, from setting in as more and more functionality is added to a complex system. Once you ve completed this milestone, the design and the code should be in a very good state, ready for development to begin on the next use case (or batch of use cases). Here are our top 10 Code Review and Model Update guidelines. We describe these in more detail in 11. 10. Prepare for the review, and make sure all participants have read the relevant review material prior to the meeting. 9. Create a high-level list of items to review, based on the use cases. 8. If necessary, break down each item in the list into a smaller checklist. 7. Review code at several different levels.

The Directory and File classes provide a number of useful methods. Table 16-1 and Table 16-2 show an overview of the most important methods. Note that every method takes the same parameter: a fully qualified path name identifying the directory or file you want the operation to act on. A few methods, such as Delete(), have optional parameters.

CreateDirectory()

c# add watermark to existing pdf file using itextsharp

How to add a watermark to a PDF file? - Stack Overflow
The fact that the file size increases is a good indication that the watermark is added. The main problem is that you're adding the watermark ...

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[Solved] How to add watermark image in pdf file - CodeProject
Here is some example for applying watermark in pdf. ... com/post/2011/12/21/Using-iTextSharp-with-aspnet-to-add-watermark-in-pdf-file.aspx[^]

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add watermark image to pdf using itextsharp c#

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