How to Implement Efficient Pagination in ASP.NET MVC using LINQ and Default Route Parameters?

Pagination in ASP.NET MVC using LINQ and Default Route Parameters

Problem:

How to efficiently implement pagination in an ASP.NET MVC application, allowing users to browse through a large list of items divided into multiple pages?

Answer:

Determining Data Source and Default Parameters

First, identify the data source for your list and define your action method with default arguments for pagination. For instance:

public ActionResult Search(string query, int startIndex = 0, int pageSize = 20)
{
    // ...
}

Using LINQ for Pagination

To split the list of items into pages, use LINQ. For skipping a specific number of items (as determined by startIndex) and retrieving the specified page size (pageSize), you can use the following LINQ expressions:

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

Default Route Configuration

Configure default values for startIndex and pageSize in the routes setup:

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

Action Links for Pagination

Generate action links for navigating to different pages:

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

This approach allows you to break up a list into browsable pages using LINQ, default route parameters, and action links. It streamlines the pagination process and enforces consistent formatting and styling across all pages.

The above is the detailed content of How to Implement Efficient Pagination in ASP.NET MVC using LINQ and Default Route Parameters?. For more information, please follow other related articles on the PHP Chinese website!