Code Inspections in XAML

In XAML, ReSharper 2025.3 provides two kinds of code inspections: 4 inspections that detect errors such as broken syntax, unresolved symbols, compiler errors, and so on (you cannot configure or disable any of these inspections), and 76 proprietary code inspections, any of which you can disable or change its severity level.
These code inspections help you detect code issues in design time in all open files, and additionally they allow you to find code issues in specific scope.

Configurable XAML inspections are listed below, grouped by their categories.

Code Notification (26 inspections)

This category groups code inspections with minor severity levels.

Inspection ID EditorConfig property	Default severity
{DynamicResource} can only be used with dependency property `Xaml.DynamicResourceError` `resharper_xaml_dynamic_resource_error_highlighting`	Error
Constructor not resolved `Xaml.ConstructorWarning` `resharper_xaml_constructor_warning_highlighting`	Warning
Decimal numbers parsed depending on current machine culture `Xaml.DecimalParsingIsCultureDependent` `resharper_xaml_decimal_parsing_is_culture_dependent_highlighting`	Warning
Dependency property descriptor field missing `Xaml.DependencyPropertyResolveError` `resharper_xaml_dependency_property_resolve_error_highlighting`	Warning
Element name reference is not resolved `Xaml.ElementNameReferenceNotResolved` `resharper_xaml_element_name_reference_not_resolved_highlighting`	Error
Grid columns/rows definitions can be converted to attribute `Xaml.GridDefinitionsCanBeConvertedToAttribute` `resharper_xaml_grid_definitions_can_be_converted_to_attribute_highlighting`	Hint
Grid length definition must not be empty `Xaml.EmptyGridLengthDefinition` `resharper_xaml_empty_grid_length_definition_highlighting`	Error
Ignored path `Xaml.IgnoredPathHighlighting` `resharper_xaml_ignored_path_highlighting_highlighting`	Disabled
Mapped path `Xaml.MappedPathHighlighting` `resharper_xaml_mapped_path_highlighting_highlighting`	Hint
Member of invalid type `Xaml.InvalidMemberType` `resharper_xaml_invalid_member_type_highlighting`	Error
Method arguments will be replaced by event's arguments in generated code `Xaml.MethodArgumentsWillBeIgnored` `resharper_xaml_method_arguments_will_be_ignored_highlighting`	Warning
Multiple overloads with same arguments count found `Xaml.OverloadsCollision` `resharper_xaml_overloads_collision_highlighting`	Warning
Object/markup extension of invalid type `Xaml.InvalidType` `resharper_xaml_invalid_type_highlighting`	Error
Parent is outside the current component tree `Xaml.ParentIsOutOfCurrentComponentTree` `resharper_xaml_parent_is_out_of_current_component_tree_highlighting`	Warning
Path to resource is case-sensitive `Xaml.ResourceFilePathCaseMismatch` `resharper_xaml_resource_file_path_case_mismatch_highlighting`	Warning
Routed event descriptor field missing `Xaml.RoutedEventResolveError` `resharper_xaml_routed_event_resolve_error_highlighting`	Warning
Static resource not resolved `Xaml.StaticResourceNotResolved` `resharper_xaml_static_resource_not_resolved_highlighting`	Warning
Style class not found `Xaml.StyleClassNotFound` `resharper_xaml_style_class_not_found_highlighting`	Warning
Unresolved binding path when DataContext is known `Xaml.BindingWithContextNotResolved` `resharper_xaml_binding_with_context_not_resolved_highlighting`	Warning
Unresolved binding path when DataContext is unknown `Xaml.BindingWithoutContextNotResolved` `resharper_xaml_binding_without_context_not_resolved_highlighting`	Hint
Using stream binding operator in TwoWay or OneWayToSource binding modes `Xaml.AvaloniaWrongBindingModeForStreamBindingOperator` `resharper_xaml_avalonia_wrong_binding_mode_for_stream_binding_operator_highlighting`	Warning
x:DataType not specified for CompiledBinding `Xaml.CompiledBindingMissingDataTypeErrorHighlighting` `resharper_xaml_compiled_binding_missing_data_type_error_highlighting_highlighting`	Error
x:FieldModifier attribute requires x:Name attribute `Xaml.FieldModifierRequiresNameAttribute` `resharper_xaml_field_modifier_requires_name_attribute_highlighting`	Warning
XAML dynamic resource of invalid type `Xaml.InvalidDynamicResourceType` `resharper_xaml_invalid_dynamic_resource_type_highlighting`	Suggestion
XAML resource of invalid type `Xaml.InvalidResourceType` `resharper_xaml_invalid_resource_type_highlighting`	Error
XAML style of invalid target type `Xaml.InvalidResourceTargetType` `resharper_xaml_invalid_resource_target_type_highlighting`	Error

Common Practices and Code Improvements (3 inspections)

This category groups inspections that hunt for medium severity issues that mainly affect code readability.

Inspection ID EditorConfig property	Default severity
Member can be made private (non-private accessibility) `MemberCanBePrivate.Global` `resharper_member_can_be_private_global_highlighting`	Suggestion
Member can be made protected (non-private accessibility) `MemberCanBeProtected.Global` `resharper_member_can_be_protected_global_highlighting`	Suggestion
Member or type can be made internal (friend) `MemberCanBeInternal` `resharper_member_can_be_internal_highlighting`	Disabled

Inspection
ID
EditorConfig property

Default severity

Member can be made private (non-private accessibility)

MemberCanBePrivate.Global
resharper_member_can_be_private_global_highlighting

Suggestion

Member can be made protected (non-private accessibility)

MemberCanBeProtected.Global
resharper_member_can_be_protected_global_highlighting

Suggestion

Member or type can be made internal (friend)

MemberCanBeInternal
resharper_member_can_be_internal_highlighting

Disabled

Compiler Warnings (2 inspections)

Inspections in this category detect compiler warnings before you compile.

Inspection ID EditorConfig property	Default severity
Use of obsolete type or type member `ObsoleteElement` `resharper_obsolete_element_highlighting`	Warning
Use of obsolete type or type member (error) `ObsoleteElementError` `resharper_obsolete_element_error_highlighting`	Error

Inspection
ID
EditorConfig property

Default severity

Use of obsolete type or type member

ObsoleteElement
resharper_obsolete_element_highlighting

Warning

Use of obsolete type or type member (error)

ObsoleteElementError
resharper_obsolete_element_error_highlighting

Error

Constraints Violations (2 inspections)

This category includes code inspections, mostly with the warning severity level, which detect violations related to symbol attributes, including ReSharper's code annotations, and other similar issues.

Inspection ID EditorConfig property	Default severity
Inconsistent Naming `InconsistentNaming` `resharper_inconsistent_naming_highlighting`	Warning
Possible 'null' assignment to non-nullable entity `Xaml.AssignNullToNotNullAttribute` `resharper_xaml_assign_null_to_not_null_attribute_highlighting`	Warning

Inspection
ID
EditorConfig property

Default severity

Inconsistent Naming

InconsistentNaming
resharper_inconsistent_naming_highlighting

Warning

Possible 'null' assignment to non-nullable entity

Xaml.AssignNullToNotNullAttribute
resharper_xaml_assign_null_to_not_null_attribute_highlighting

Warning

Grammar Issues (4 inspections)

Inspections in this category report grammar issues in string literals and documentation comments.

Inspection ID EditorConfig property	Default severity
Grammar error in comment `GrammarMistakeInComment` `resharper_grammar_mistake_in_comment_highlighting`	Suggestion
Grammar error in markup attribute value `GrammarMistakeInMarkupAttribute` `resharper_grammar_mistake_in_markup_attribute_highlighting`	Suggestion
Grammar error in markup text `GrammarMistakeInMarkupText` `resharper_grammar_mistake_in_markup_text_highlighting`	Suggestion
Grammar error in string literal `GrammarMistakeInStringLiteral` `resharper_grammar_mistake_in_string_literal_highlighting`	Disabled

Potential Code Quality Issues (18 inspections)

This category includes inspections that detect critical issues (code smells), mostly with Error or Warning level. This category also includes inspections that ensure localization assistance.

Inspection ID EditorConfig property	Default severity
DeviceFamily-specific view type name does not match generic type name `Xaml.XamlMismatchedDeviceFamilyViewClrNameHighlighting` `resharper_xaml_xaml_mismatched_device_family_view_clr_name_highlighting_highlighting`	Warning
Duplicate device family view `Xaml.XamlDuplicateDeviceFamilyTypeViewHighlighting` `resharper_xaml_xaml_duplicate_device_family_type_view_highlighting_highlighting`	Error
Duplicate style property/event setter `Xaml.DuplicateStyleSetter` `resharper_xaml_duplicate_style_setter_highlighting`	Warning
Grid element column/row index is out of grid definition range `Xaml.IndexOutOfGridDefinition` `resharper_xaml_index_out_of_grid_definition_highlighting`	Warning
Missing grid column/row setter for non-first child `Xaml.MissingGridIndex` `resharper_xaml_missing_grid_index_highlighting`	Warning
Non-accessed field (non-private accessibility) `NotAccessedField.Global` `resharper_not_accessed_field_global_highlighting`	Suggestion
Non-accessed field (private accessibility) `NotAccessedField.Local` `resharper_not_accessed_field_local_highlighting`	Warning
Path error `Xaml.PathError` `resharper_xaml_path_error_highlighting`	Warning
Possible 'null' value in the path of binding without fallback value `Xaml.PossibleNullReferenceException` `resharper_xaml_possible_null_reference_exception_highlighting`	Suggestion
RelativeSourceMode is not set explicitly `Xaml.XamlRelativeSourceDefaultModeWarningHighlighting` `resharper_xaml_xaml_relative_source_default_mode_warning_highlighting_highlighting`	Warning
Resource cannot be accessed by class name because of x:Key attribute `Xaml.RedundantXamarinFormsClassDeclaration` `resharper_xaml_redundant_xamarin_forms_class_declaration_highlighting`	Warning
Style target type is not convertible to base type `Xaml.StyleInvalidTargetType` `resharper_xaml_style_invalid_target_type_highlighting`	Error
Types in x:DataType and BindingContext mismatch `Xaml.XamlXamarinFormsDataTypeAndBindingContextTypeMismatchedHighlighting` `resharper_xaml_xaml_xamarin_forms_data_type_and_binding_context_type_mismatched_highlighting_highlighting`	Warning
Unexpected element error `Xaml.UnexpectedElement` `resharper_xaml_unexpected_element_highlighting`	Error
Unexpected text token error `Xaml.UnexpectedTextToken` `resharper_xaml_unexpected_text_token_highlighting`	Error
Unknown DeviceFamily `Xaml.XamlUnknownDeviceFamilyTypeHighlighting` `resharper_xaml_xaml_unknown_device_family_type_highlighting_highlighting`	Warning
x:Key is allowed for resources and dictionary elements only `Xaml.XKeyAttributeDisallowed` `resharper_xaml_x_key_attribute_disallowed_highlighting`	Error
XAML language level error `Xaml.LanguageLevel` `resharper_xaml_language_level_highlighting`	Error

Redundancies in Code (13 inspections)

Code inspections in this category look for redundancies and dead code, which affect code readability and style, and could be safely removed. Some code redundancies cannot be fixed automatically, and quick-fixes for them are performed in the interactive mode, requiring the user input. But the majority of the redundancies can be fixed without user interaction, using either fix in scope or code cleanup.

Inspection ID EditorConfig property	Default severity
Binding mode is equal to default `Xaml.RedundantBindingModeAttribute` `resharper_xaml_redundant_binding_mode_attribute_highlighting`	Warning
Property value is equal to style-provided `Xaml.RedundantStyledValue` `resharper_xaml_redundant_styled_value_highlighting`	Warning
Redundant empty collection property setter `Xaml.RedundantCollectionProperty` `resharper_xaml_redundant_collection_property_highlighting`	Warning
Redundant 'Freeze' attribute `Xaml.RedundantFreezeAttribute` `resharper_xaml_redundant_freeze_attribute_highlighting`	Warning
Redundant modifiers attribute `Xaml.RedundantModifiersAttribute` `resharper_xaml_redundant_modifiers_attribute_highlighting`	Warning
Redundant name attribute `Xaml.RedundantNameAttribute` `resharper_xaml_redundant_name_attribute_highlighting`	Warning
Redundant namespace alias `Xaml.RedundantNamespaceAlias` `resharper_xaml_redundant_namespace_alias_highlighting`	Warning
Redundant property type qualifier `Xaml.RedundantPropertyTypeQualifier` `resharper_xaml_redundant_property_type_qualifier_highlighting`	Warning
Redundant resource `Xaml.RedundantResource` `resharper_xaml_redundant_resource_highlighting`	Warning
Remove redundant attached property setter `Xaml.RedundantAttachedProperty` `resharper_xaml_redundant_attached_property_highlighting`	Warning
Single grid row/column definition is redundant `Xaml.RedundantGridDefinitions` `resharper_xaml_redundant_grid_definitions_highlighting`	Warning
Single-cell grid column/row span is redundant `Xaml.RedundantGridSpan` `resharper_xaml_redundant_grid_span_highlighting`	Warning
UpdateSourceTrigger=Default is redundant `Xaml.RedundantUpdateSourceTriggerAttribute` `resharper_xaml_redundant_update_source_trigger_attribute_highlighting`	Warning

Redundancies in Symbol Declarations (4 inspections)

This category includes code inspections, mostly with the warning severity level, which detect empty and unused symbol declarations.

Inspection ID EditorConfig property	Default severity
Type is never used (non-private accessibility) `UnusedType.Global` `resharper_unused_type_global_highlighting`	Suggestion
Type is never used (private accessibility) `UnusedType.Local` `resharper_unused_type_local_highlighting`	Warning
Type member is never used (non-private accessibility) `UnusedMember.Global` `resharper_unused_member_global_highlighting`	Suggestion
Type member is never used (private accessibility) `UnusedMember.Local` `resharper_unused_member_local_highlighting`	Warning

Spelling Issues (4 inspections)

These inspections detect typos in various contexts.

Inspection ID EditorConfig property	Default severity
Typo in comment `CommentTypo` `resharper_comment_typo_highlighting`	Suggestion
Typo in identifier `IdentifierTypo` `resharper_identifier_typo_highlighting`	Suggestion
Typo in markup attribute value `MarkupAttributeTypo` `resharper_markup_attribute_typo_highlighting`	Suggestion
Typo in markup text `MarkupTextTypo` `resharper_markup_text_typo_highlighting`	Suggestion

10 November 2025