Attributes Outline

Sannr translates standard C# class attributes into strict compile-time assertion statements natively compatible with trimming. This prevents runtime MethodInfo.Invoke() penalties.

The Standard Property Constraints

These natively mirror their System component behaviors exactly with explicit string length validation, sequence lookups, and regex implementations designed with strict JIT considerations.

• [Required]
• [StringLength(maximumLength, MinimumLength)]
• [Range(min, max)]
• [EmailAddress]
• [CreditCard]
• [Url]
• [Phone]
• [FileExtensions(Extensions = "pdf,docx")]

Expanded Enterprise Assertions

Advanced condition flags extend your declarative API capabilities instantly.

• [RequiredIf(DependencyData, TargetValue)]: Conditionally marks boundaries.
• [FutureDate]: Business rule dictating strict chronological bounds.
• [AllowedValues("State1", "State2")]: Generates direct switch logic statements avoiding massive array iterations for simple enumerations.
• [ConditionalRange("Condition", "State", Min, Max)]

The [Sanitize] Mutation Attribute

This unique property alters state before logic executes, shifting Trim, culture casing, and whitespace processing directly into Sannr bounds.

[Sanitize(Trim = true, ToUpper = true)]
public string Code { get; set; }

[CustomValidator(Type, Method)]

Declares an explicit hook into custom, AOT-friendly code definitions containing ValidationResult objects with strict HTTP-scoped async evaluation capabilities natively provided.