S3L0009: No this qualifier¶

this. is written only where a local or a parameter shadows the member.

What it reports¶

this.Member where looking up Member at that point finds the same member and no local, parameter or range variable of that name. This is IDE0003, which a command-line build does not run even when named as an error, so the SDK carries it as a rule of its own.

What it leaves alone¶

this. where a local or parameter of the same name would otherwise win, and extension method calls through this..

Why¶

The guidelines ask for this. only where it is needed; written everywhere, it hides the one place where it matters.

How to fix¶

Remove this.. The code fix does it; Fix All applies it to a document, project or solution.

Suppressing it¶

Fix the code rather than silence the rule: the rule is part of the standard every Snail repository keeps. Where one place truly must differ, suppress that place and say why:

[SuppressMessage("Snail", "S3L0009:No this qualifier", Justification = "<why this place differs>")]

A NoWarn in a project or props file would hide the rule from every new line too; the conformance check reports one as migration debt (S3LC0017).