Code inspection: Auto-property accessor is never used (non-private accessibility)
Category: Potential Code Quality Issues
ID: UnusedAutoPropertyAccessor.Global
EditorConfig: resharper_unused_auto_property_accessor_global_highlighting=[error|warning|suggestion|hint|none]
Language: C#, VB.NET
Requires SWA: Yes
tip
This inspection reports public auto-properties that have nominal usages, but may not do anything meaningful because one of their accessors is never used.
Here is an example that illustrates the issue in a simple case:
public class Post
{
// Set in the constructor but never read
public string Name { get; set; }
// Read once but the value is never set
public bool NeedsReview { get; set; }
public Post(string name) => Name = name;
public void FlagReview()
{
if(NeedsReview)
Console.WriteLine("Please review");
}
}
For the solution-wide inspection to work, you need to enable at least one of the following:
Simplified global usage checking: select Show unused non-private type members when solution-wide analysis is off on the Editor | Inspection Settings page of JetBrains Rider settings CtrlAlt0S.
Solution-wide analysis: select Enable solution-wide analysis on the Editor | Inspection Settings page of JetBrains Rider settings CtrlAlt0S.
Note that even if the reported accessor has no direct usages in your solution, there could be cases where it is used indirectly — for example, via reflection — or it could just be designed as public API. In all those cases, you would want to suppress the usage-checking inspection for the accessor in one of the following ways:
The recommended way is to decorate the implicitly used accessor with a code annotation attribute. There are two attributes for this purpose: [UsedImplicitly] and [PublicAPI], which are functionally similar, but let you and your teammates understand how the accessor is actually used.
You can also suppress usage-checking inspections with any custom attribute. To do so, mark the definition of that attribute with the [MeansImplicitUse] attribute.
And finally, you can suppress a specific usage-checking inspection as any other code inspection with a suppression comment or a suppression attribute.