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How to compress , optimize, condense Adobe PDF documents using C# in ASP. .... If you are using x64 libraries /dlls, Right click the project -> Properties -> Build ... The main element you should pay attention to in the interfaces is the Expression property of the IQueryable interface. It gives you the expression that corresponds to the query. The actual query underneath the hood of an IQueryable is an expression tree of LINQ query operators/method calls. This is the part of the IQueryable that your provider must comprehend in order to do anything useful. Note that the IQueryable<T> interface implements IEnumerable<T> so that the results of the query it encompasses can be enumerated. Enumeration should force the execution of the expression tree associated with an IQueryable object. At this time, we ll translate the expression tree into an Amazon web query and make the call to Amazon s web services. This is what the IQueryProvider referenced by an IQueryable instance will do. We have to implement the members of the IQueryProvider interface in order to handle the execution of the queries. Here is how it is declared: pdf compress in c#: C# How to compress PDF images in C# for Visual Studio 2013 compress pdf file size in c# How to recompress images in a PDF using iTextSharp - Basically a ...
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28 Feb 2018 ... There is no doubt that the PDF file which contains plenty of images will enlarge the file and consume additional disk space to store, and it ... public interface IQueryProvider { IQueryable CreateQuery(Expression expr); IQueryable<TElement> CreateQuery<TElement>(Expression expr); object Execute(Expression expr); TResult Execute<TResult>(Expression expr); } There are number of tools available to you which can help you to collect and analyze your application s performance data. Each of the tools described in this section have different functionality that you can use to measure, analyze, and find performance bottlenecks in your application. edit pdf file using itextsharp c#: The C# PDF Library | Iron PDF c# reduce pdf file size itextsharp 7 ways to compress PDF files in C# , VB.NET | Syncfusion Blogs
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C# ( PDF Compression ) Big PDF file to Small PDF . ... /13719553/ compress - existing- pdf -using-c-sharp-programming-using-freeware- libraries . 0 ... As you can see, the IQueryProvider interface contains two groups of methods, one for the creation of queries and another of the execution of queries. Each group contains both generic and nongeneric overloads. Implementing IQueryProvider may look like a lot of work. Don t worry. You only really need to worry about the Execute method. It is the entry point into your provider for executing query expressions. This is the quintessence of your LINQ provider implementation. Now that you ve seen what needs to be implemented to create a complete LINQ provider, you may start to wonder if it s not something difficult. Well, it is! You should never consider the creation of a LINQ provider to be an easy task. However, things should be a bit easier after you ve taken a look at our sample implementation and you ve been able to see how the mechanics work. The LINQ to Amazon sample is here to help you make your first steps with IQueryable<T> without too much difficulty. It contains the bases required for every implementation of a LINQ provider. Let s now see how the LINQ to Amazon provider implements IQueryable and IQueryProvider. c# reduce pdf file size itextsharp Compress existing PDF using C# programming using freeware ...
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25 Apr 2018 ... Syncfusion Essential PDF is a .NET PDF library that can be used to optimize or compress your PDF documents. Reducing the PDF file size can ... To implement LINQ to Amazon s query provider, we reused code provided by Matt Warren from Microsoft on his blog.2 The code we reuse consists of a generic implementation of IQueryable<T> (the Query<T> class in the Query.cs file) and a base implementation of IQueryProvider (the QueryProvider class in the QueryProvider.cs file). Once you have these classes at hand, what s left is to create a class that inherits from QueryProvider and provides an implementation for the Execute method, and optionally one for the GetQueryText method. Of course, implementing Execute is the most difficult part, precisely because what a LINQ provider does is execute queries! In our case, this is not so difficult, as you can see. Here is how we implemented the AmazonBookQueryProvider class: public class AmazonBookQueryProvider : QueryProvider { public override String GetQueryText(Expression expr) { AmazonBookQueryCriteria criteria; var visitor = new AmazonBookExpressionVisitor(); criteria = visitor.ProcessExpression(expr); Note: In addition to the tools described here, there are a number of other options and third-party tools available. For a description of other logging and exception management options, see the Exception Management Architecture Guide, at http://msdn.microsoft.com/library/default.asp url= /library/en-us/dnbda/html/exceptdotnet.asp. You should carefully consider your exact requirements before deciding on which tools are most appropriate to your needs. String url = AmazonHelper.BuildUrl(criteria); return url; } public override object Execute(Expression expr) { String url = GetQueryText(expr); IEnumerable<AmazonBook> results = AmazonHelper.PerformWebQuery(url); return results; } } People do that (you ll see it in internet examples all the time) because they anticipate their script having a problem, and they know it s safe to ignore it, and they don t want to see an error message. This is an incredibly poor practice, because it also suppresses any error messages that might help you debug the script. For example, if you edit the script and make a typo somewhere, you won t see an error message when you run the You can see that the work is greatly simplified because we d already created the useful helper classes, AmazonBookExpressionVisitor and AmazonHelper, in the previous section. Matt Warren provides an introduction to the implementation of an IQueryable provider, as well as sample source code in his blog. The series of posts is available at the following address: http:// blogs.msdn.com/mattwar/archive/2007/08/09/linq-building-an-iqueryable-provider-part-i.aspx compress pdf file size in c# Reduce PDF document size through C# - Stack Overflow
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