The C# code contains a region.
A violation of this rule occurs whenever a region is placed anywhere within the code. In many editors, including Visual Studio, the region will appear collapsed by default, hiding the code within the region. It is generally a bad practice to hide code, as this can lead to bad decisions as the code is maintained over time.
How to Fix Violations
To fix a violation of this rule, remove the region from the code.
How to Suppress Violations
[SuppressMessage("StyleCop.CSharp.ReadabilityRules", "SA1124:DoNotUseRegions", Justification = "Reviewed.")]