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ServiceResolver.cs
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ServiceResolver.cs
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using Microsoft.Extensions.DependencyInjection;
namespace Serenity.Extensions.DependencyInjection;
/// <summary>
/// A generic version of IServiceProvider which resolves a service on demand.
/// </summary>
/// <typeparam name="TService"></typeparam>
/// <remarks>
/// Initializes a new instance.
/// </remarks>
/// <param name="serviceProvider">The service provider</param>
/// <exception cref="ArgumentNullException">Throws when service provider is null</exception>
public class ServiceResolver<TService>(IServiceProvider serviceProvider) : IServiceResolver<TService>
where TService : notnull
{
private readonly IServiceProvider serviceProvider = serviceProvider ?? throw new ArgumentNullException(nameof(serviceProvider));
/// <summary>
/// Resolves TService using the service provider. If the service was registered as transient, this method acts like a factory.
/// </summary>
/// <returns>TService instance</returns>
public TService Resolve()
{
return serviceProvider.GetRequiredService<TService>();
}
}