---
title: NoteValidator
summary: API reference for NoteValidator.
status: draft
owner: SAIF Doc Gen
last_reviewed: 2026-09-24
library: SAIF.Services
reference_type: package
---

# NoteValidator

A FluentValidation `AbstractValidator<Note>` that enforces content and length rules for a Collections case note, including the append-text workflow used once a note is outside its editable window. It has no external collaborators, relying only on the `Note` instance being validated.

## Purpose
- Requires note text to be present, and (when not being appended to) between 4 and 4000 characters.
- Requires append text once a note can no longer be directly edited (`CanEdit == false`).
- Prevents the combined original-plus-appended note text from exceeding 4000 characters.

## Context
- Namespace: `SAIF.Services.Collections.Validators`
- Assembly/package: `SAIF.Services` (packaged inside the `SAIF.SAIFCode.Core` NuGet package)

## Public members
| Member | Signature | Purpose |
| --- | --- | --- |
| NoteValidator() | `public NoteValidator()` | Registers the note-text presence/length rules and the conditional append-text presence/combined-length rules described above against a validated `Note` instance. |

## Behavioral notes
- The 4–4000 character length rule for `NoteText` only applies when there is no append text in progress, allowing an existing over-length note to remain valid while it is being appended to rather than replaced.
- `IsNoteLengthValid` checks the trimmed original `NoteText` length rather than the combined appended text, which may not fully validate the true post-append length*.

> **Note:** Statements marked with * were inferred from code structure, naming conventions, or
> contextual evidence where direct confirmation was not available in source artifacts. Statements
> marked with ** could not be confirmed; treat as unknown until verified.

## Sources
- Services/SAIF.Services/Collections/Validators/NoteValidator.cs