JetBrains Rider 2022.1 Help

Solution-wide code inspections

Most of JetBrains Rider's code inspections only need the source code of a single file to detect code issues. In addition to these inspections, JetBrains Rider provides solution-wide inspections for code issues which are only detectable in the scope of the entire solution — for example to detect an unused non-private member JetBrains Rider needs to analyze the entire solution.

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 Ctrl+Alt+S.

  • Solution-wide analysis: select Enable solution-wide analysis on the Editor | Inspection Settings page of JetBrains Rider settings Ctrl+Alt+S.

Note that even if the reported symbol 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 symbol in one of the following ways:

Similarly to any other inspection, you can also disable or change severity level of any solution-wide inspection. This can be done right from the Alt+Enter menu on a code issue that the inspection highlights. Alternatively, you can disable/enable or change severity levels of inspections on the Editor | Inspection Severity page of JetBrains Rider settings Ctrl+Alt+S — solution-wide inspections are marked with the Non-private accessibility label. Note that you cannot set the 'Error' severity for solution-wide inspections.

When solution-wide analysis is enabled, issues detected by the solution-wide inspections are highlighted in the opened files in the same way as other issues, and they also appear in the Inspection Results window when you run code inspection in specific scope. However, they do not appear in the All Solution Files tab of the Problems tool window Alt+6.

If necessary, you can disable solution-wide inspections or only enable solution-wide inspections on internal symbols for specific projects. To do so, use the Solution-Wide Inspections selector on the Inspections page of the project properties dialog (right-click a project and choose Properties).

Note that independently of the value in this selector, solution-wide inspections would be disabled if solution-wide analysis is disabled in JetBrains Rider options.

JetBrains Rider provides the following solution-wide inspections:

Inspection

Language

Default Severity

Auto-property can be made get-only (non-private accessibility)

C#

Suggestion

Class can be made sealed (non-inheritable) (non-private accessibility)

C#

Disabled

Convert local variable or field to constant (non-private accessibility)

C#

Hint

Field can be made readonly (non-private accessibility)

C#

Suggestion

Member can be made private (non-private accessibility)

C#

Suggestion

Member can be made protected (non-private accessibility)

C#

Suggestion

Member can be made static (shared) (non-private accessibility)

C#

Hint

Parameter type can be IEnumerable<T> (non-private accessibility)

C#

Hint

Property can be made init-only (non-private accessibility)

C#

Suggestion

Return type can be IEnumerable<T> (non-private accessibility)

C#

Hint

Introduce optional parameters (non-private accessibility)

C#

Suggestion

Abstract or virtual (overridable) event is never invoked

C#

Suggestion

Auto-property accessor is never used (non-private accessibility)

C#

Warning

Class is never instantiated (non-private accessibility)

C#

Suggestion

Collection is never updated (non-private accessibility)

C#

Warning

Collection's content is never queried (non-private accessibility)

C#

Warning

Event is never subscribed to (non-private accessibility)

C#

Suggestion

Non-accessed field (non-private accessibility)

C#

Suggestion

Non-accessed positional property (non-private accessibility)

C#

Warning

Suspicious type conversion or check

C#

Warning

Unassigned field (non-private accessibility)

C#

Suggestion

Redundant global using directive

C#

Warning

Class with virtual (overridable) members never inherited (non-private accessibility)

C#

Suggestion

Entity is only used to capture its name (non-private accessibility)

C#

Warning

Method return value is never used (non-private accessibility)

C#

Suggestion

Parameter is only used for precondition check (non-private accessibility)

C#

Suggestion

Parameter output value is always discarded (non-private accessibility)

C#

Suggestion

Redundant method overload (non-private accessibility)

C#

Suggestion

Type is never used (non-private accessibility)

C#

Suggestion

Type member is never accessed via base type (non-private accessibility)

C#

Suggestion

Type member is never used (non-private accessibility)

C#

Suggestion

Type member is only used in overrides (non-private accessibility)

C#

Suggestion

Unused parameter (non-private accessibility)

C#

Suggestion

Virtual (overridable) member is never overridden (non-private accessibility)

C#

Suggestion

Auto-property can be made get-only (non-private accessibility)

VB.NET

Suggestion

Class can be made sealed (non-inheritable) (non-private accessibility)

VB.NET

Disabled

Convert local variable or field to constant (non-private accessibility)

VB.NET

Hint

Field can be made readonly (non-private accessibility)

VB.NET

Suggestion

Member can be made private (non-private accessibility)

VB.NET

Suggestion

Member can be made protected (non-private accessibility)

VB.NET

Suggestion

Member can be made static (shared) (non-private accessibility)

VB.NET

Hint

Parameter type can be IEnumerable<T> (non-private accessibility)

VB.NET

Hint

Property can be made init-only (non-private accessibility)

VB.NET

Suggestion

Return type can be IEnumerable<T> (non-private accessibility)

VB.NET

Hint

Abstract or virtual (overridable) event is never invoked

VB.NET

Suggestion

Auto-property accessor is never used (non-private accessibility)

VB.NET

Warning

Class is never instantiated (non-private accessibility)

VB.NET

Suggestion

Collection is never updated (non-private accessibility)

VB.NET

Warning

Collection's content is never queried (non-private accessibility)

VB.NET

Warning

Event is never subscribed to (non-private accessibility)

VB.NET

Suggestion

Non-accessed field (non-private accessibility)

VB.NET

Suggestion

Non-accessed positional property (non-private accessibility)

VB.NET

Warning

Suspicious type conversion or check

VB.NET

Warning

Unassigned field (non-private accessibility)

VB.NET

Suggestion

Class with virtual (overridable) members never inherited (non-private accessibility)

VB.NET

Suggestion

Entity is only used to capture its name (non-private accessibility)

VB.NET

Warning

Method return value is never used (non-private accessibility)

VB.NET

Suggestion

Parameter is only used for precondition check (non-private accessibility)

VB.NET

Suggestion

Parameter output value is always discarded (non-private accessibility)

VB.NET

Suggestion

Type is never used (non-private accessibility)

VB.NET

Suggestion

Type member is never accessed via base type (non-private accessibility)

VB.NET

Suggestion

Type member is never used (non-private accessibility)

VB.NET

Suggestion

Type member is only used in overrides (non-private accessibility)

VB.NET

Suggestion

Unused parameter (non-private accessibility)

VB.NET

Suggestion

Virtual (overridable) member is never overridden (non-private accessibility)

VB.NET

Suggestion

Type is never used (non-private accessibility)

JavaScript

Suggestion

Type member is never used (non-private accessibility)

JavaScript

Suggestion

Non-accessed field (non-private accessibility)

ASP.NET

Suggestion

Type member is never used (non-private accessibility)

ASP.NET

Suggestion

Member can be made private (non-private accessibility)

XAML

Suggestion

Member can be made protected (non-private accessibility)

XAML

Suggestion

Non-accessed field (non-private accessibility)

XAML

Suggestion

Type is never used (non-private accessibility)

XAML

Suggestion

Type member is never used (non-private accessibility)

XAML

Suggestion

Non-accessed field (non-private accessibility)

HttpHandler or WebService

Suggestion

Type member is never used (non-private accessibility)

HttpHandler or WebService

Suggestion

Last modified: 06 October 2021