SA1307: Accessible fields should begin with upper-case letter

Cause

The name of a public or internal field in C# does not begin with an upper-case letter.

Rule description

A violation of this rule occurs when the name of a public or internal field begins with a lower-case letter. Public or internal fields should begin with an upper-case letter.

If the field or variable name is intended to match the name of an item associated with Win32 or COM, and thus needs to start with a lower-case letter, place the field or variable within a special NativeMethods class. A NativeMethods class is any class which contains a name ending in NativeMethods, and is intended as a placeholder for Win32 or COM wrappers. StyleCop will ignore this violation if the item is placed within a NativeMethods class.

C# 8 readonly members do not change the scope of this rule. It still applies only to field declarations (including readonly fields in structs) and ignores readonly methods, properties, indexers, or events. Public and internal readonly fields continue to be analyzed here, while static readonly fields can also trigger SA1311. When SA1307 is enabled, SA1304 suppresses itself for public, internal, and protected internal readonly fields so only one of these two diagnostics is produced. Protected and private protected readonly fields are checked by SA1304, not SA1307.

How to fix violations

To fix a violation of this rule, change the name of the field so that it begins with an upper-case letter, or place the item within a NativeMethods class if appropriate.

How to suppress violations

[SuppressMessage("StyleCop.CSharp.NamingRules", "SA1307:AccessibleFieldsMustBeginWithUpperCaseLetter", Justification = "Reviewed.")]

#pragma warning disable SA1307 // AccessibleFieldsMustBeginWithUpperCaseLetter
#pragma warning restore SA1307 // AccessibleFieldsMustBeginWithUpperCaseLetter