GU0003

Name the parameter to match the assigned member

Topic	Value
Id	GU0003
Severity	Hidden
Enabled	True
Category	Gu.Analyzers.Correctness
Code	ConstructorAnalyzer

Description

Name the constructor parameters to match the assigned member. This is useful when serializing using NewtonSoft.Json and when using named arguments.

Motivation

In the below code the parameter named notMatching should be named a to match the property it sets.

public class Foo
{
    public Foo(int notMatching, int b, int c, int d)
    {
        this.A = notMatching;
        this.B = b;
        this.C = c;
        this.D = d;
    }

    public int A { get; }

    public int B { get; }

    public int C { get; }

    public int D { get; }
}

How to fix violations

public class Foo
{
    public Foo(int a, int b, int c, int d)
    {
        this.A = a;
        this.B = b;
        this.C = c;
        this.D = d;
    }

    public int A { get; }

    public int B { get; }

    public int C { get; }

    public int D { get; }
}

Configure severity

Via ruleset file.

Configure the severity per project, for more info see MSDN.

Via #pragma directive.

#pragma warning disable GU0003 // Name the parameter to match the assigned member
Code violating the rule here
#pragma warning restore GU0003 // Name the parameter to match the assigned member

Or put this at the top of the file to disable all instances.

#pragma warning disable GU0003 // Name the parameter to match the assigned member

Via attribute [SuppressMessage].

[System.Diagnostics.CodeAnalysis.SuppressMessage("Gu.Analyzers.Correctness", 
    "GU0003:Name the parameter to match the assigned member", 
    Justification = "Reason...")]