vTPagifyFilterLib 1.1.1

PagifyFilter

Easy Pagination and Filter

Overview

PagifyFilter is a NuGet package that provides an extension method for IEnumerable<T> to enable asynchronous searching, filtering, and ordering of collections based on the properties of a PagifyFilter.Pagination object. This package is designed to simplify and optimize the process of querying collections in .NET applications.

Here's how the original code can be optimized:

var searchResults = people
    .Where(dto => 
        (string.IsNullOrEmpty(searchName) || dto.Name?.Contains(searchName, StringComparison.OrdinalIgnoreCase) == true) &&
        (!searchAge.HasValue || dto.Age == searchAge) &&
        (string.IsNullOrEmpty(searchAddress) || dto.Address?.Contains(searchAddress, StringComparison.OrdinalIgnoreCase) == true)
    ).ToList();

// Sorting
var sortedResults = searchResults
    .OrderBy(dto => dto.Name)
    .ThenBy(dto => dto.Age)
    .ToList();

Optimized Code using PagifyFilter

var result = await people.SearchAsync(searchDto);

Installation

These steps must be adhered to when using this package with IEnumerable collections.

To install the package, choose one of the following commands:

.NET CLI:

  dotnet add package vTPagifyFilterLib

Package manager:

Install-Package vTPagifyFilterLib

Usage

The code snippet public class YourSearchDto : PagifyFilter.Pagination { } defines a class named YourSearchDto that inherits from a base class called PagifyFilter.Pagination. Here’s a breakdown of what this means:

Inheritance in C#

In C#, inheritance allows a class to inherit the properties and methods of another class. The class that inherits is called the derived class (in this case, YourSearchDto), and the class being inherited from is called the base class (in this case, PagifyFilter.Pagination).

PagifyFilter.Pagination Class

The PagifyFilter.Pagination class is likely a class that contains properties and methods related to paginating data. Common properties in a Pagination class might include: CurrentPageNo: The current page number. ItemsPerPage: The number of items per page. TotalItems: The total number of items. SortColumn: Column for Sorting. IsAscendingSort: If true , it means ascending otherwise descending

YourSearchDto Class

By inheriting from PagifyFilter.Pagination, the YourSearchDto class will have all the properties and methods of the Pagination class. This means that YourSearchDto can be used to handle pagination-related data along with any additional properties or methods you might add to it.

Integration with PagifyFilter

The PagifyFilter package provides an extension method SearchAsync for IEnumerable<T> to enable asynchronous searching, filtering, and ordering of collections based on the properties of a SearchDto object. Here’s how YourDto can be used with PagifyFilter: Define YourDto: Inherit from Pagination to include pagination properties. Use YourDto with SearchAsync: Pass an instance of YourDto to the SearchAsync method to filter and paginate your data.

Example

Here’s an example to illustrate

Defining Your Search DTO

Create a class that inherits from PagifyFilter.Pagination to include pagination properties in your data transfer object (DTO): Note: all fields must be allowed to be null by using '?'.

public class YourSearchDto : PagifyFilter.Pagination
{
    public string? Name { get; set; }
    public int? Age { get; set; }
    public string? Address { get; set; }
}

Integrating with PagifyFilter

Use the SearchAsync extension method provided by PagifyFilter to filter and paginate your data

var searchDto = new YourSearchDto
    {
        PageNumber = 1,
        PageSize = 10,
        Name = "A"
    };

var result = await people.SearchAsync(searchDto);

Adding Sorting

If you need sorting, specify the column and sort direction:

var searchDto = new YourSearchDto
    {
        PageNumber = 1,
        PageSize = 10,
        Name = "A"
        SortColumn ="Age"
    };

var result = await people.SearchAsync(searchDto);

Return Value

The SearchAsync method returns a PagedResult<Tdata>, which contains the filtered and optionally ordered elements from the source collection

Practical Application

In a real-world scenario, YourSearchDto can be used to pass search criteria and pagination information to a method that retrieves data from a database or API. This approach helps manage large datasets efficiently, improving performance and user experience.

Summary

PagifyFilter simplifies pagination, filtering, and sorting in .NET applications. Extend PagifyFilter.Pagination to include custom search criteria in your search DTO. Use SearchAsync to efficiently retrieve and manage data.

If you have any more questions or need further clarification, feel free to ask!