Answer
After model binding, validation attributes run, errors populate the ModelState dictionary, and filters may stop execution. This ensures invalid data never reaches application logic.
Quick Answer
After model binding: run DataAnnotation validators → run IValidatableObject.Validate() (cross-property rules) → run custom ValidationAttribute subclasses → populate ModelState. If FluentValidation is registered, its validators run instead of (or alongside) DataAnnotations. The pipeline is controlled via IObjectModelValidator. Check ModelState.IsValid before proceeding.
S
SugharaIQ Editorial Team
Verified Answer
This answer has been peer-reviewed by industry experts holding senior engineering roles to ensure technical accuracy and relevance for modern interview standards.
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Source: SugharaIQ