The package provides a lightweight, fluent API for runtime validation of objects and conditions. This library helps ensure that parameters meet expected conditions before execution, reducing boilerplate code for argument validation.
Get Started
$ dotnet add package NetExt.RequireReadme
Package: NetExt.Awaiter
Awaiter is a lightweight package for simplifying the management of multiple asynchronous tasks. It allows you to seamlessly await tasks with or without return values, combining them into a single, structured workflow. With tuple-based result handling, Awaiter helps you reduce boilerplate code and improves the readability of complex asynchronous operations.
Features:
- Simplifies Task Management Combine tasks with and without return values into a single operation.
- Tuple-Based Results Receive the results of tasks in a structured tuple format, supporting up to 20 returnable tasks.
- Mixed Task Support Manage tasks with mixed return types while optionally awaiting non-returnable tasks.
- Clean Code Reduce boilerplate code for Task.WhenAll and manual result extraction.
Usage
Basic Usage:
using NetExt.Awaiter;
// Tasks with return values
var task1 = Task.FromResult(10);
var task2 = Task.FromResult("Hello");
// Tasks without return values
var noResultTasks = new[] { Task.Delay(100), Task.Delay(200) };
// Await and combine results
var result = await AwaitExt.TasksAsync(task1, task2, noResultTasks);
Console.WriteLine(result.Item1); // Outputs: 10
Console.WriteLine(result.Item2); // Outputs: Hello
Handling Multiple Returnable Tasks
var task1 = Task.FromResult(10);
var task2 = Task.FromResult("Hello");
var task3 = Task.FromResult(true);
var result = await AwaitExt.TasksAsync(task1, task2, task3);
Console.WriteLine(result.Item1); // 10
Console.WriteLine(result.Item2); // Hello
Console.WriteLine(result.Item3); // True
Working with Only Non-Returnable Tasks
var noResultTasks = new[] { Task.Delay(100), Task.Delay(200) };
await AwaitExt.TasksAsync(noResultTasks);
Benefits
- Improved Readability: Streamline asynchronous workflows with a clear and concise API.
- Flexibility: Supports up to 20 tasks with return values, making it suitable for large operations.
- Consistency: Combines returnable and non-returnable tasks in a unified method.
Package NetExt.DateTime
The NetExt.DateTime package provides a set of extension methods to simplify working with DateTime in .NET. It includes utilities for converting between Unix time (milliseconds) and DateTime, as well as specifying the DateTimeKind explicitly. This lightweight and efficient library enhances DateTime manipulation, ensuring better clarity and correctness in handling time-related data.
Features:
- Convert Unix time (milliseconds) to DateTime (ToUtcDateTimeExt)
- Convert DateTime to Unix time (milliseconds) (ToUnixTimeMillisecondsExt)
- Specify the DateTimeKind for a DateTime object (ToSpecifyExt)
Package NetExt.MayBe
The MayBe<T> is a lightweight, readonly wrapper for managing nullable references with enhanced safety and expressiveness. It simplifies handling scenarios where a value may or may not exist, providing built-in methods for validation and error handling.
interface IRepository
{
Task<MayBe<UserEntity>> GetAsync(int id);
}
...
MayBe<UserEntity> entity = await IRepository.GetAsync(123);
// check that entity exists or not
if (entity.Exists)
{
// TBD
}
...
// OR
var entity = (await IRepository.GetAsync(123)).GetOrThrow("Entity");
// OR
var entity = await IRepository.GetAsync(123).GetOrThrow("Entity");
...
// return entity or throw exception
var result = entity.AssumeExists("error message");
Package: NetExt.Models
The package provides a set of core models and exceptions designed to simplify application development by offering reusable structures and standardized error handling. This package ensures consistency and clarity in managing data and exceptions across your application.
Models:
- IdNameModel: A simple model containing an Id and Name, ideal for representing key-value pairs or lookup entities.
- ListResult: A utility model for returning paginated or list-based results, commonly used in API responses.
Exceptions:
- BadRequestExceptionExt: Represents an HTTP 400 (Bad Request) error for invalid or malformed input.
- ForbiddenExceptionExt: Represents an HTTP 403 (Forbidden) error for unauthorized access attempts.
- NotFoundExceptionExt: Represents an HTTP 404 (Not Found) error for missing resources.
- UnAuthorizationExceptionExt: Represents an HTTP 401 (Unauthorized) error for failed authentication.
- RequireExceptionExt: Represents error for failed Reuire validation.
Namespace: NetExt.Models.Enums
The namespace provides an extension method for enums, allowing seamless conversion of enum values to their underlying integer representation. This simplifies handling enums in scenarios where integer values are required, such as database storage, serialization, or calculations.
Sort enum:
- ASC: Represents ascending order. Items are sorted from smallest to largest or in lexicographical order (A-Z).
- DESC: Represents descending order. Items are sorted from largest to smallest or in reverse lexicographical order (Z-A).
Benefits:
- Standardization: Provides consistent models and exception handling throughout your application.
- Readability: Improves code clarity by using well-defined structures and error types.
- Ease of Use: Simplifies the development process with ready-to-use models and exceptions.
Use Cases:
- Define and share common models for API responses or data handling.
- Ensure unified exception handling for client-server communication.
- Improve the maintainability and scalability of your codebase.
Package: NetExt.Require
A Lightweight Validation Utility for .NET
NetExt.Require provides a simple and efficient way to enforce runtime validations in .NET applications. It ensures that objects and conditions meet expected constraints before proceeding with execution, reducing redundant validation logic.
Features
- Null Checks – Ensure objects are not null before execution.
- Condition Enforcement – Validate boolean expressions with custom exception handling.
- Caller Argument Expression – Automatically infers parameter names in .NET 6+.
- Exception Type Selection – Supports multiple exception types, including RequireException and ArgumentNullException.
- Fluent Extension Methods – Supports .ThrowIfNullExt() for easier usage.
- Cross-Platform Compatibility – Works with .NET 6+, .NET Standard 2.0, and 2.1.
DateTime? testValue = null;
// Throws RequireException with "testValue" as message
RequireExt.ThrowIfNull(testValue);
// Throws RequireException if the condition is false
RequireExt.That(5 > 10, "This condition must be true!");
// Throws ArgumentNullException if name is null
RequireExt.ThrowIfNull(name, ExceptionType.ArgNull);
DateTime? myObject = null;
// Throws RequireException if null
myObject.ThrowIfNullExt();
// Throws ArgumentNullException if null
myObject.ThrowIfNullExt(ExceptionType.ArgNull);
Package: NetExt.Strings
NetExt.Strings is a powerful utility library that extends string manipulation capabilities in .NET. It provides a variety of robust, easy-to-use methods for trimming, validating, transforming, encoding, and replacing string values. This package simplifies common string operations, improves code readability, and enhances productivity for .NET developers.
Key Features:
- String Validation: Check for null, empty, or whitespace values with optional trimming.
- Custom Replacements: Replace keys, characters, or substrings within strings using flexible methods.
- Base64 Encoding and Decoding: Seamlessly convert strings to and from Base64 with customizable encoding.
- Digit Extraction: Extract numeric values from strings with ease.
- String Joining: Combine collections of strings with a specified separator.
- Culture-Aware Conversion: Convert objects to strings using CultureInfo.InvariantCulture or a custom provider.
- Enhanced Trimming: Remove leading and trailing whitespaces with improved trimming functionality.
Example Usages:
using NetExt.Strings;
// Trim a string
var trimmed = " Hello World ".TrimExt(); // Output: "Hello World"
// Validate string
var isNullOrVoid = "".IsNullOrVoidExt(); // Output: true
// Replace keys in a string
var replacements = new Dictionary<string, string> { { "World", "Universe" } };
var replaced = "Hello World".ReplaceExt(replacements); // Output: "Hello Universe"
// Base64 encoding
var base64 = "Hello".ToBase64Ext(); // Output: "SGVsbG8="
var decoded = base64.FromBase64Ext(); // Output: "Hello"
// Get digits from a string
var digits = "A1B2C3".GetOnlyDigitsExt(); // Output: 123
// Join strings
var joined = new[] { "one", "two", "three" }.JoinWithExt(", "); // Output: "one, two, three"
Package NetExt.Utils
The NetExt.Utils package provides lightweight and efficient extensions for collections and common utilities in .NET. Designed to enhance developer productivity, these extensions simplify handling collections and validating input values.
Namespace: NetExt.Utils.Collections
The namespace class provides utility methods for working with collections in a more intuitive and streamlined way. These extensions help convert individual items into various collection types and simplify iteration over collections.
ForEach Extension
The ForEachExt method is an extension for IEnumerable that simplifies iterating over a collection by applying an action to each element. It reduces boilerplate code for loops, making your code cleaner and more expressive.
var variable = 99999;
Console.WriteLine(variable.ToListExt());
// Output: List<int>() { 99999 }
var numbers = new List<int> { 1, 2, 3 };
// Apply an action to each element
numbers.ForEachExt(number => Console.WriteLine(number * 2));
// Output:
// 2
// 4
// 6
Namespace: NetExt.Utils.Common
The GetValidatedValueExt extension method ensures that a provided value is not null, throwing an ArgumentNullException if it is. This utility is useful for enforcing required parameters and improving code safety. Note: In .NET 6+, it leverages [CallerArgumentExpression] to provide the exact variable name in the exception message.
DateTime? variableName = null;
variableName.GetValidatedValueExt();
// Output: Passed null value for required 'variableName' param.