Class PreconditionRequiredError
- Namespace
- Trellis
- Assembly
- Trellis.Results.dll
Represents a precondition required error per RFC 6585 §3.
The server requires the request to be conditional — the client must include
a precondition header (e.g., If-Match) to proceed.
Maps to HTTP 428 Precondition Required.
public sealed class PreconditionRequiredError : Error, IEquatable<Error>- Inheritance
-
PreconditionRequiredError
- Implements
- Inherited Members
- Extension Methods
Examples
Error.PreconditionRequired("This operation requires an If-Match header.")Remarks
This error is returned when a mutating operation (PUT, PATCH, DELETE) is attempted
without an If-Match header. Requiring conditional requests prevents the
"lost update" problem where a client overwrites changes made by another client.
This is distinct from PreconditionFailedError (412), which indicates that a precondition WAS provided but evaluated to false.
Constructors
PreconditionRequiredError(string, string, string?)
Initializes a new instance of the PreconditionRequiredError class.
public PreconditionRequiredError(string detail, string code, string? instance = null)