Rigorous trainer selection
Each trainer is validated on three criteria: hands-on field expertise, proven pedagogy and alignment with your industry.
- Triple validation: technical, pedagogical, sectoral.
- Minimum rating 4.8/5 over the last 12 sessions.
Learning objectives
- Master the fundamentals of FluentValidation 2026 for validating API models
- Develop fluent and reusable validation rules
- Implement validation in .NET APIs to strengthen enterprise skills
- Design custom validators tailored to business needs
- Integrate FluentValidation with ASP.NET Core for a robust and certified API
- Optimize validation performance in real-world projects
- Acquire practical skills for API development certification
The Learni story
Founded by passionate learning and innovation experts, Learni's mission is to make professional training accessible to everyone, anywhere in the world. Our team operates in major hubs — London, New York, Boston — and internationally, to support talents and organizations in upskilling.
Don't let this gap widen
Why this program matters
Without this upskilling, your team accumulates a technological gap that translates directly into productivity loss.
Organizations that don't train their talents on key topics see their competitiveness drop.
Every quarter without training is a gap widening with competitors who invest.
The cost of inaction quickly exceeds that of well-targeted training.
Program
Module 1FluentValidation 2026 Fundamentals: Installation and Basic Rules (C#, ASP.NET Core, First Validators)
Discover the installation of FluentValidation 2026 in a .NET project, configure validators for primitive types and simple objects, apply rules such as Required, Length, or Email through practical exercises on API models, test validation errors with FluentAssertions, build your first complete validator for user input, analyze custom error returns, and integrate directly into an ASP.NET Core controller to validate incoming HTTP requests.
Module 2Advanced FluentValidation 2026 Rules: Conditional and Custom Validations (Extension Tools, Business Cases)
Dive into conditional validations with When and Unless, create custom rules via IValidator, integrate nested validators for complex objects typical of APIs, explore collections with SetValidator, practice on real scenarios like validating JSON API payloads, configure dependency injection for dynamic validations, test exhaustively with xUnit and Moq, and produce multilingual error reports adapted to enterprise needs.
Module 3FluentValidation 2026 Integration and Optimization: Production API Deployment (Performance, Middleware, Monitoring)
Integrate FluentValidation as a global middleware in ASP.NET Core, optimize performance with compilation and caching, handle validation exceptions via custom filters, implement monitoring with Serilog to trace failures, deploy on Azure or Docker with concrete examples, complete a final REST API project validated from A to Z, export reusable YAML configurations, and receive a code audit by the trainer to certify your professional skills.
Evaluation method
- Interactive quizzes at the end of each day on key concepts
- Graded practical exercises with individualized feedback
- Final validated API project evaluated against professional criteria
Learning method
- Active pedagogy with 70% hands-on practice on real code
- Hands-on exercises in small groups of maximum 10
- Business API case studies to provide context
- Unlimited post-training video support and resources
Methods, materials and delivery
The Training FluentValidation 2026 - Robustly Validate .NET APIs program is delivered onsite or remote (blended-learning, e-learning, virtual classroom, remote presence). At Learni, an industry-certified training organization, every program is built to maximize skills acquisition regardless of the chosen format.
The trainer alternates between demonstrative, interrogative and active methods (through hands-on labs and/or scenarios). This pedagogical approach guarantees concrete learning that's immediately applicable at work.
Equipment required
For the smooth delivery of the Training FluentValidation 2026 - Robustly Validate .NET APIs program, the following equipment is required:
- Mac or PC computers, high-speed fiber internet, whiteboard or flipchart, projector or interactive touch screen (for remote sessions)
- Training environments installed on workstations or accessible online
- Course materials, hands-on exercises and complementary resources
- Post-training access to materials and educational resources
For intra-company training on a site outside Learni, the client commits to providing all required teaching materials (computers, internet, etc.) for the smooth delivery of the program in line with the prerequisites in the communicated program.
* contact us for remote delivery feasibility** ratio varies depending on the program
Skills assessment methods
Assessment of skills acquired during the Training FluentValidation 2026 - Robustly Validate .NET APIs program is performed through:
- During training: case studies, hands-on labs and professional scenarios
- End of training: self-assessment questionnaire and skills evaluation by the trainer
- After training: completion certificate detailing acquired skills
Program accessibility
Learni is committed to making its programs accessible. All our programs are accessible to people with disabilities. Our teams are available to adapt the pedagogical methods to your specific needs. Please contact us for any adjustment request.
Enrollment terms and lead times
Learni programs are available inter-company and intra-company, onsite or remote. Enrollments are possible up to 48 business hours before the program starts. Our programs are eligible for corporate funding paths. Contact us to discuss your training project and funding options.
Verified reviews
What our learners
★★★★★
« cool, j'ai appris des trucs »
★★★★★
« j'etais perdu au debut mais Ramy Saharaoui m'a pas laché, il a pris le temps. merci vraiment »
★★★★★
« la formation dev etait intense mais grave bien. merci Anthony Khelil »
★★★★★
« 😊👍 »
★★★★★
« bien 👍 »
★★★★★
« Allan Busi t'es au top, continue comme ça. formation géniale »
★★★★★
« cool, j'ai appris des trucs »
★★★★★
« j'etais perdu au debut mais Ramy Saharaoui m'a pas laché, il a pris le temps. merci vraiment »
★★★★★
« la formation dev etait intense mais grave bien. merci Anthony Khelil »
★★★★★
« 😊👍 »
★★★★★
« bien 👍 »
★★★★★
« Allan Busi t'es au top, continue comme ça. formation géniale »
★★★★★
« cool, j'ai appris des trucs »
★★★★★
« j'etais perdu au debut mais Ramy Saharaoui m'a pas laché, il a pris le temps. merci vraiment »
★★★★★
« la formation dev etait intense mais grave bien. merci Anthony Khelil »
★★★★★
« 😊👍 »
★★★★★
« bien 👍 »
★★★★★
« Allan Busi t'es au top, continue comme ça. formation géniale »
Our method
Training quality, guaranteed at every step
Before, during, after: we frame the brief, introduce the trainer, tailor the content and measure impact. You stay in control from kickoff to wrap-up.
You meet the trainer beforehand
30-minute video call between you and the selected trainer to validate the fit, adjust content and clear any final doubts.
- Live briefing on goals and team context.
- Veto right — we swap the trainer for free if needed.
Content tailored to your context
No recycled slides. The syllabus is reworked from your real cases: tools, constraints, vocabulary, ongoing projects.
- Hands-on cases drawn from your stack and projects.
- Program co-written then validated by your team.
Continuous quality follow-up
Live evaluations, 30/90/180-day check-ins and a consolidation plan. If the impact misses the mark, we rework it.
- NPS, knowledge quizzes and skills self-assessment.
- Satisfaction guarantee: fully satisfied or free rework.
A simple promise: you don't pay to discover the trainer on day one. Everything is validated upfront, by you.
API Development
More programs in API Development.
Design Graphique
More programs in Design Graphique.
Design GraphiqueIndustry-certifiedAdvanced DigitalOcean Training - Deploy Scalable Infrastructures
$3,780Net · employer-funded
Design GraphiqueIndustry-certifiedAdvanced Expo Training - Maximize ROI on Professional Trade Shows
$2,520Net · employer-funded
Design GraphiqueIndustry-certifiedAdvanced Mastery of Plotters for Large Format Printing: From Installation to Optimization
$3,960Net · employer-funded
Design GraphiqueIndustry-certifiedAdvanced PCI-DSS Training - Ensure Total Payment Security Compliance
$6,300Net · employer-funded
Design GraphiqueIndustry-certifiedAdvanced PCI-DSS Training - Master Expert Compliance
$6,300Net · employer-funded
Design GraphiqueIndustry-certifiedArticle 5 RGPD : Maîtriser les Principes Fondamentaux de la Protection des Données Personnelles
$1,320Net · employer-funded
Développement Backend
More programs in Développement Backend.
Développement BackendIndustry-certifiedAdvanced Django Training - Master APIs and Scalability
$1,260Net · employer-funded
Développement BackendIndustry-certifiedAdvanced Express.js Training - Scalable and Secure APIs
$6,300Net · employer-funded
Développement BackendIndustry-certifiedAdvanced FastAPI Training - Build Scalable Ultra-High-Performance APIs
$5,040Net · employer-funded
Développement BackendIndustry-certifiedAdvanced Flask Training - Develop Scalable and Secure APIs
$5,040Net · employer-funded
Développement BackendIndustry-certifiedAdvanced Flask Training - Develop Scalable and Secure APIs
$3,780Net · employer-funded
Développement BackendIndustry-certifiedAdvanced Go Training - Master Concurrency and Microservices
$6,300Net · employer-funded
Développement Web
More programs in Développement Web.
Développement WebIndustry-certifiedAPNs Training - Expert Scaling iOS Push Notifications
$2,640Net · employer-funded
Développement WebIndustry-certifiedASP.NET Core : Maîtriser le Développement Web Moderne
$6,600Net · employer-funded
Développement WebIndustry-certifiedATDD : Maîtriser l’Acceptance Test Driven Development en équipes agiles
$3,960Net · employer-funded
Développement WebIndustry-certifiedAWS IoT Core : Maîtrisez la gestion intelligente des objets connectés
$3,960Net · employer-funded
Développement WebIndustry-certifiedAWS Security Hub : Maîtriser la sécurité cloud avec AWS
$2,640Net · employer-funded
Développement WebIndustry-certifiedAccélérer vos modèles d’Intelligence Artificielle avec OpenVINO : de l’optimisation à la mise en production
$3,960Net · employer-funded
Your professional training, anywhere
Let's build
your next
program.
30 minutes with a learning advisor. No commitment. No sales pitch dressed up as a demo.
Reply within 24 h · Industry-certified · Corporate funding