JetBrains Rider 2020.2 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 either or both of the following:

  • The simplified global usage checking is enabled —Show unused non-private type members when solution-wide analysis is off on the Editor | Inspection Settings page of JetBrains Rider options Ctrl+Alt+S.

  • The solution-wide analysis is enabled —Enable solution-wide analysis on the Editor | Inspection Settings page of JetBrains Rider options Ctrl+Alt+S.

Note that even if a symbol has no direct usages in your solution and JetBrains Rider warns you about it, there could be cases where symbols are used indirectly — for example, via reflection — or they could just be designed as public API. In all those cases you would want to suppress the usage-checking inspection for the symbol, and there are several ways to do so:

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 options 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 the 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 Errors/Warnings in Solution window.

JetBrains Rider provides the following solution-wide inspections:

InspectionLanguageDefault 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
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 invokedC#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
Suspicious type conversion or checkC#Warning
Unassigned field (non-private accessibility)C#Suggestion
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
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.NETSuggestion
Class can be made sealed (non-inheritable) (non-private accessibility)VB.NETDisabled
Convert local variable or field to constant (non-private accessibility)VB.NETHint
Field can be made readonly (non-private accessibility)VB.NETSuggestion
Member can be made private (non-private accessibility)VB.NETSuggestion
Member can be made protected (non-private accessibility)VB.NETSuggestion
Member can be made static(shared) (non-private accessibility)VB.NETHint
Parameter type can be IEnumerable<T> (non-private accessibility)VB.NETHint
Return type can be IEnumerable<T> (non-private accessibility)VB.NETHint
Abstract or virtual (overridable) event is never invokedVB.NETSuggestion
Auto-property accessor is never used (non-private accessibility)VB.NETWarning
Class is never instantiated (non-private accessibility)VB.NETSuggestion
Collection is never updated (non-private accessibility)VB.NETWarning
Collection's content is never queried (non-private accessibility)VB.NETWarning
Event is never subscribed to (non-private accessibility)VB.NETSuggestion
Non-accessed field (non-private accessibility)VB.NETSuggestion
Suspicious type conversion or checkVB.NETWarning
Unassigned field (non-private accessibility)VB.NETSuggestion
Class with virtual (overridable) members never inherited (non-private accessibility)VB.NETSuggestion
Entity is only used to capture its name (non-private accessibility)VB.NETWarning
Method return value is never used (non-private accessibility)VB.NETSuggestion
Parameter is only used for precondition check (non-private accessibility)VB.NETSuggestion
Type is never used (non-private accessibility)VB.NETSuggestion
Type member is never accessed via base type (non-private accessibility)VB.NETSuggestion
Type member is never used (non-private accessibility)VB.NETSuggestion
Type member is only used in overrides (non-private accessibility)VB.NETSuggestion
Unused parameter (non-private accessibility)VB.NETSuggestion
Virtual (overridable) member is never overridden (non-private accessibility)VB.NETSuggestion
Type is never used (non-private accessibility)JavaScriptSuggestion
Type member is never used (non-private accessibility)JavaScriptSuggestion
Non-accessed field (non-private accessibility)ASP.NETSuggestion
Type member is never used (non-private accessibility)ASP.NETSuggestion
Member can be made private (non-private accessibility)XAMLSuggestion
Member can be made protected (non-private accessibility)XAMLSuggestion
Non-accessed field (non-private accessibility)XAMLSuggestion
Type is never used (non-private accessibility)XAMLSuggestion
Type member is never used (non-private accessibility)XAMLSuggestion
Non-accessed field (non-private accessibility)HttpHandler or WebServiceSuggestion
Type member is never used (non-private accessibility)HttpHandler or WebServiceSuggestion
Last modified: 08 May 2020