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11 May 2008 ... Using iTextSharp To Watermark /Write Text To Existing PDF's . May 11 ... 17 /// < param name="sourceFile">The PDf File </param> 18 /// <param ...
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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 ... > open System;; > let o = Activator.CreateInstance(Type.GetTypeFromProgID("Word.Application"));; val o : obj > let t = o.GetType();; val t : Type > t.GetProperty("Visible").SetValue(o, (true :> Object), null);; val it : unit = () > let m = t.GetMethod("Quit");; val m : Reflection.MethodInfo > m.GetParameters().Length;; val it : int = 3 > m.GetParameters();; val it : ParameterInfo [] = [|System.Object& SaveChanges {Attributes = In, Optional, HasFieldMarshal; DefaultValue = System.Reflection.Missing; IsIn = true; IsLcid = false; IsOptional = true; IsOut = false; IsRetval = false; Member = Void Quit(System.Object ByRef, System.Object ByRef, System.Object ByRef); MetadataToken = 134223449; Name = "SaveChanges"; ParameterType = System.Object&; Position = 0; RawDefaultValue = System.Reflection.Missing;}; ... more ... |] > m.Invoke(o, [| null; null; null |]);; val it : obj = null Since F# imposes type inference, you cannot use the simple syntax provided by an interpreter. The compiler should know in advance the number and type of arguments of a method and the methods exposed by an object. You must remember that even if fsi.exe allows you to interactively execute F# statements, it still is subjected to the constraints of a compiled language. Since you are creating an instance of a COM component dynamically in this example, the compiler does not know anything about this component. Thus, it can be typed as just System.Object. To obtain the same behavior of an interpreted language, you must resort to the reflection support of the .NET runtime. Using the GetType method, you can obtain an object describing the type of the object o. Then you can obtain a PropertyInfo object describing the Visible property, and you can invoke the SetValue method on it to show the Word main window. The SetValue method is generic; therefore, you have to cast the Boolean value to System.Object to comply with the method signature. create barcode in word 2010 free, qr code birt free, birt barcode tool, birt ean 13, birt code 128, gs1-128 word add image watermark to pdf c# Add Watermark in PDF in C# , VB.NET - E-iceblue
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May 11, 2008 · First off, yes, I know there are other tutorials on how to watermark PDF's with iTextSharp. Unfortunately none of them showed me exactly what I ... add watermark to pdf c# Using iTextSharp To Watermark /Write Text To Existing PDF's ...
11 May 2008 ... When I arrived to this client they utilized iTextSharp to " watermark " their PDF's . I' ve been ... An image with text was "underlain" into the PDF . In a similar way, you can obtain an instance of the MethodInfo class describing the Quit method. Since a method has a signature, you ask for the parameters; there are three of them, and they are optional. Therefore, you can invoke the Quit method by calling the Invoke method and passing the object target of the invocation and an array of arguments that you set to null because arguments are optional. How can the runtime interact with COM components The basic approach is based on the so-called COM callable wrapper (CCW) and the runtime callable wrapper (RCW), as shown in Figure 17-3. The former is a chunk of memory dynamically generated with a layout compatible with the one expected from COM components so that external programs, even legacy Visual Basic 6 applications, can access services implemented as managed components. The latter is more common and creates a .NET type dealing with the COM component, taking care of all the interoperability issues. It is worth noting that although the CCW can always be generated because the .NET runtime has full knowledge about assemblies, the opposite is not always possible. Without IDispatch or type libraries, there is no description of a COM component at run time. Moreover, if a component uses custom marshalling, it cannot be wrapped by an RCW. Fortunately, for the majority of COM components, it is possible to generate the RCW. pdf watermark c# Adding Image watermark to Pdf while Creating it using C# – reader ...
2 Dec 2018 ... Always utilize saveState() and restoreState() when you change the graphics condition. , if you don't you might receive undesirable results such ... add watermark to pdf using itextsharp c# [Solved] How to add watermark image in pdf file - CodeProject
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