BRO1403: Remove delegate parenthesis when possible¶

delegate { } instead of delegate() { }. Replaces StyleCop SA1410.

Example¶

root = true

[*.cs]
dotnet_diagnostic.BRO1125.severity = none

Before¶

using System;

public class Timer
{
    public Action OnTick = delegate() { };
}

After¶

using System;

public class Timer
{
    public Action OnTick = delegate { };
}

Why¶

Empty parentheses add nothing: an anonymous method without a parameter list already fits any delegate.

How the fix works¶

The parentheses are removed. Where BRO1125 is on (the preset), it turns the anonymous method into a lambda instead, so this rule only reports what BRO1125 leaves alone; the example turns BRO1125 off.

Not reported¶

Calls where the parentheses pick the overload (Run(Action) and Run(Action<int>)), like StyleCop.
Anonymous methods that BRO1125 turns into lambdas.

Compared with StyleCop¶

StyleCop reports both SA1130 and SA1410 on delegate() { }; StyleBro reports only BRO1125 there, so the two fixes don't edit the same code.