SA1142: Refer to tuple fields by name

📝 This rule is new for StyleCop Analyzers, and was not present in StyleCop Classic. 📝 This rule is only active for C# 7.0 and higher

Cause

An element of a tuple was referenced by its metadata name when an element name is available.

Rule description

An element of a tuple was referenced by its metadata name when an element name is available. See the documentation on tuple types for information on how to work with tuples in C# 7.

For example, the following code would produce a violation of this rule:

(int valueA, int valueB) x;

var y = x.Item1; // SA1142

The following code would not produce any violations:

(int valueA, int valueB) x;

var y = x.valueA;

How to fix violations

To fix a violation of this rule, use the appropriate tuple element name in code instead of the metadata name.

How to suppress violations

[SuppressMessage("StyleCop.CSharp.ReadabilityRules", "SA1142:ReferToTupleElementsByName", Justification = "Reviewed.")]

#pragma warning disable SA1142 // Refer to tuple elements by name
#pragma warning restore SA1142 // Refer to tuple elements by name