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MyNewProjectName.Application/Features/Sample/Commands/CreateSample/CreateSampleCommand.cs

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+using MediatR;
+
+namespace MyNewProjectName.Application.Features.Sample.Commands.CreateSample;
+
+/// <summary>
+/// Command to create a new sample
+/// </summary>
+public record CreateSampleCommand(string Name, string? Description) : IRequest<Guid>;

MyNewProjectName.Application/Features/Sample/Commands/CreateSample/CreateSampleCommandHandler.cs

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+using MyNewProjectName.Domain.Entities;
+using MyNewProjectName.Domain.Interfaces;
+using MediatR;
+
+namespace MyNewProjectName.Application.Features.Sample.Commands.CreateSample;
+
+/// <summary>
+/// Handler for CreateSampleCommand
+/// </summary>
+public class CreateSampleCommandHandler : IRequestHandler<CreateSampleCommand, Guid>
+{
+    private readonly IRepository<SampleEntity> _repository;
+    private readonly IUnitOfWork _unitOfWork;
+
+    public CreateSampleCommandHandler(IRepository<SampleEntity> repository, IUnitOfWork unitOfWork)
+    {
+        _repository = repository;
+        _unitOfWork = unitOfWork;
+    }
+
+    public async Task<Guid> Handle(CreateSampleCommand request, CancellationToken cancellationToken)
+    {
+        var entity = new SampleEntity
+        {
+            Id = Guid.NewGuid(),
+            Name = request.Name,
+            Description = request.Description,
+            IsActive = true,
+            CreatedAt = DateTime.UtcNow
+        };
+
+        await _repository.AddAsync(entity, cancellationToken);
+        await _unitOfWork.SaveChangesAsync(cancellationToken);
+
+        return entity.Id;
+    }
+}

MyNewProjectName.Application/Features/Sample/Commands/CreateSample/CreateSampleCommandValidator.cs

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+using FluentValidation;
+
+namespace MyNewProjectName.Application.Features.Sample.Commands.CreateSample;
+
+/// <summary>
+/// Validator for CreateSampleCommand
+/// </summary>
+public class CreateSampleCommandValidator : AbstractValidator<CreateSampleCommand>
+{
+    public CreateSampleCommandValidator()
+    {
+        RuleFor(x => x.Name)
+            .NotEmpty().WithMessage("Name is required.")
+            .MaximumLength(200).WithMessage("Name must not exceed 200 characters.");
+
+        RuleFor(x => x.Description)
+            .MaximumLength(1000).WithMessage("Description must not exceed 1000 characters.");
+    }
+}

MyNewProjectName.Application/Features/Sample/Queries/GetSamples/GetSamplesQuery.cs

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+using MediatR;
+
+namespace MyNewProjectName.Application.Features.Sample.Queries.GetSamples;
+
+/// <summary>
+/// Query to get all samples
+/// </summary>
+public record GetSamplesQuery : IRequest<List<SampleDto>>;

MyNewProjectName.Application/Features/Sample/Queries/GetSamples/GetSamplesQueryHandler.cs

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+using AutoMapper;
+using MyNewProjectName.Domain.Entities;
+using MyNewProjectName.Domain.Interfaces;
+using MediatR;
+
+namespace MyNewProjectName.Application.Features.Sample.Queries.GetSamples;
+
+/// <summary>
+/// Handler for GetSamplesQuery
+/// </summary>
+public class GetSamplesQueryHandler : IRequestHandler<GetSamplesQuery, List<SampleDto>>
+{
+    private readonly IRepository<SampleEntity> _repository;
+    private readonly IMapper _mapper;
+
+    public GetSamplesQueryHandler(IRepository<SampleEntity> repository, IMapper mapper)
+    {
+        _repository = repository;
+        _mapper = mapper;
+    }
+
+    public async Task<List<SampleDto>> Handle(GetSamplesQuery request, CancellationToken cancellationToken)
+    {
+        var entities = await _repository.GetAllAsync(cancellationToken);
+        return _mapper.Map<List<SampleDto>>(entities);
+    }
+}

MyNewProjectName.Application/Features/Sample/Queries/GetSamples/SampleDto.cs

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+using AutoMapper;
+using MyNewProjectName.Application.Mappings;
+using MyNewProjectName.Domain.Entities;
+
+namespace MyNewProjectName.Application.Features.Sample.Queries.GetSamples;
+
+/// <summary>
+/// Sample DTO
+/// </summary>
+public class SampleDto : IMapFrom<SampleEntity>
+{
+    public Guid Id { get; set; }
+    public string Name { get; set; } = string.Empty;
+    public string? Description { get; set; }
+    public bool IsActive { get; set; }
+    public DateTime CreatedAt { get; set; }
+
+    public void Mapping(Profile profile)
+    {
+        profile.CreateMap<SampleEntity, SampleDto>();
+    }
+}