Stef.Validation

Stef.Validation

Guard methods for argument validation (NotNull, NotEmpty, ...)

Usage example Stef.Validation

using Stef.Validation;

public Person(string name, int age)
{
    Guard.NotNullOrEmpty(name, nameof(name));

    Guard.NotNullOrEmpty(name); // It's also possible to omit the `nameof(...)`-statement because CallerArgumentExpression is used internally.

    Guard.Condition(age, a => a > 0, nameof(age));
}

Usage example Stef.Validation.Options

This package provides an extension method to validate options using data annotations. It is useful when you want to ensure that your options are correctly configured at startup.

Define options class

public class MyOptions
{
    [Required] // This attribute ensures that the Name property is not null or empty
    public required string Name { get; init; }
}

Validate options

using Stef.Validation.Options;

public static IServiceCollection Register(this IServiceCollection services, MyOptions options)
{
    Guard.NotNull(services);
    Guard.NotNull(options);

    // Add the options to the service collection. And throw an exception if the options are not valid.
    services.AddOptionsWithDataAnnotationValidation(options);
}