How to Implement Pagination in ASP.NET MVC Applications?

Pagination in ASP.NET MVC: A Comprehensive Guide

In the realm of web development, pagination is an indispensable technique for managing extensive data lists and enhancing user experience. ASP.NET MVC, a popular framework for building dynamic web applications, offers several approaches to implement pagination with ease.

Creating a Paginated Action

To enable pagination in your MVC application, you can create an action that accepts the desired page number as a parameter. This allows you to maintain control over the data returned for each page.

For instance, consider the following action that retrieves a list of items from a database:

public ActionResult ListMyItems(int page)
{
    // ...
}

Querying the Data Source

Once you have your paginated action in place, you need to determine the most efficient way to retrieve the target data. LINQ (Language-Integrated Query) provides a convenient and flexible syntax for querying data sources.

By specifying the appropriate startIndex and pageSize parameters, you can use the Skip() and Take() operators to split your data into manageable pages:

var page = source.Skip(startIndex).Take(pageSize);

Generating Navigation Links

To navigate between pages, you can generate action links in your View. These links should provide the correct page number and any other necessary query parameters:

<%= Html.ActionLink("next page", "Search", new {
    query, startIndex = startIndex + pageSize, pageSize }) %>

Defaulting Parameters

To simplify your routes and ensure proper pagination defaults, you can configure route parameters with default values. For example, in your route setup, you can define the startIndex and pageSize parameters with default values:

        routes.MapRoute("Search", "Search/{query}/{startIndex}",
                        new
                        {
                            controller = "Home", action = "Search",
                            startIndex = 0, pageSize = 20
                        });

By following these steps, you can effortlessly implement pagination in your ASP.NET MVC applications, providing users with a convenient and intuitive way to navigate through extensive data sets.

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