System.ComponentModel.DataAnnotations

Kind: Service

Source: Pams/Data/Pams.Data/Pams.Data.csproj (line 1)

Part of: Pams

NuGet package dependency

System.ComponentModel.DataAnnotations is a NuGet package dependency declared by Pams.Data.csproj. It supports validation metadata on Pams.Data model properties, such as required fields, length constraints, and format rules, which .NET validation and model-binding code can evaluate.

Diagram

mermaid
sequenceDiagram
    participant Client
    participant API
    participant Model as Pams.Data Model
    participant Validation as System.ComponentModel.DataAnnotations

    Client->>API: Submit request payload
    API->>Model: Bind payload to model
    Model->>Validation: Evaluate validation attributes
    Validation-->>API: Validation results
    API-->>Client: Return success or validation errors

Usage

ts
type CreatePersonRequest = {
  name?: string;
  email?: string;
};

const request: CreatePersonRequest = {
  name: "Ada Lovelace",
  email: "ada@example.com",
};

const response = await fetch("/api/people", {
  method: "POST",
  headers: {
    "Content-Type": "application/json",
  },
  body: JSON.stringify(request),
});

if (!response.ok) {
  const errors = await response.json();
  console.error("Validation failed:", errors);
}

AI Coding Instructions

• Keep validation attributes on Pams.Data model properties so validation rules remain close to the data contract.
• Match client request field names and types to the model properties decorated with data-annotation attributes.
• Handle validation-error responses in API clients instead of assuming all submitted payloads are accepted.
• Check Pams.Data.csproj before adding validation attributes to confirm the package reference remains available.

Used by

1 reference from 1 file. Each is a place in this repository where the symbol is actually used — go read one rather than trusting an example.

Injected or called by (1)

• Pams.Data — Pams/Data/Pams.Data/Pams.Data.csproj:1