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Knockout.js: Pagination with ASP.NET Web API (or WCF service)

Introduction
In this article, I am trying to implement HTML table as a grid with pagination using knockout.js. This is the easiest way to get page wise data from server using ASP.NET Web API (or WCF service) and display them as a grid.

Before we jump in to this article, let’s have a look at the standard definition of Knockout.js and ASP.NET Web API:

Knockout.js is a JavaScript library that helps you to create rich, responsive displays and editor user interfaces with a clean underlying data model. Any time you have sections of UI that update dynamically (e.g., changing depending on user’s actions or when an external data source changes), KO can help you implement it more simply and maintainable.

ASP.NET Web API is a framework that makes it easy to build HTTP services that reach a broad range of clients, including browsers and mobile devices. ASP.NET Web API is an ideal platform for building RESTful applications on the .NET Framework.

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Basic points that can help to Improve Web Application Performance

1. Disable View State Of A Page If Possible:
Page that does not require any post back events can have the view State off. By default the “ViewState” property is enabled, we can disable it in two ways:
(a) At control level: by set EnableViewState property to false
(b) At page level: using <%@ Page EnableViewState=”false” %>

Advantage: It decreases the memory allocation on server.

2. Use of String Builder For Concatenation:
All operations we do on strings are stored in memory as separate references. When we modify our string, at run time it returns a new string, leaving the previous string as garbage collected. To stop creation of new references we should use string builder whenever concatenation is required.

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