Method ContainsControlCharacter

Namespace

MailFathom.Application.Emails.Mailboxes

Assembly

MailFathom.Application.dll

ContainsControlCharacter(string)

Refuses a text filter that carries a control character.

public static MailboxQueryFilterInvalidException ContainsControlCharacter(string filterName)

Parameters

filterName string

How this assembly names the filter, for example subject fragment.

Returns

MailboxQueryFilterInvalidException

The failure to raise.

Remarks

A control character is refused at this boundary rather than sent onward, because PostgreSQL text cannot hold a zero byte at all: a fragment carrying one would leave the query as a provider exception instead of the stable failure this boundary publishes. The refusal covers the whole class rather than that one character, since no subject a caller could be looking for part of contains any of them.