Editor Config C#

.editorconfig

# Remove the line below if you want to inherit .editorconfig settings from higher directories
root = true

# C# files
[*.cs]

#### Core EditorConfig Options ####

# Severities
dotnet_diagnostic.IDE0016.severity = none
dotnet_diagnostic.IDE0044.severity = none
dotnet_diagnostic.IDE0051.severity = none
dotnet_diagnostic.IDE0055.severity = warning

dotnet_diagnostic.RCS1036.severity = none
dotnet_diagnostic.RCS1037.severity = none
dotnet_diagnostic.RCS1110.severity = warning
dotnet_diagnostic.RCS1169.severity = none
dotnet_diagnostic.RCS1213.severity = none

# Indentation and spacing
indent_size = 4
indent_style = space
tab_width = 4

# New line preferences
end_of_line = crlf
insert_final_newline = false

# Organize usings
dotnet_separate_import_directive_groups = false
dotnet_sort_system_directives_first = false
file_header_template = unset

# this. and Me. preferences
dotnet_style_qualification_for_event = false
dotnet_style_qualification_for_field = false
dotnet_style_qualification_for_method = false
dotnet_style_qualification_for_property = false

# Language keywords vs BCL types preferences
dotnet_style_predefined_type_for_locals_parameters_members = true
dotnet_style_predefined_type_for_member_access = true

# Parentheses preferences
dotnet_style_parentheses_in_arithmetic_binary_operators = always_for_clarity
dotnet_style_parentheses_in_other_binary_operators = always_for_clarity
dotnet_style_parentheses_in_other_operators = never_if_unnecessary
dotnet_style_parentheses_in_relational_binary_operators = always_for_clarity

# Expression-level preferences
#IDE0017
dotnet_style_object_initializer = true
#IDE0028
dotnet_style_collection_initializer = true
#IDE0032
dotnet_style_prefer_auto_properties = false
#IDE0033
dotnet_style_explicit_tuple_names = true
#IDE0037
dotnet_style_prefer_inferred_tuple_names = true
dotnet_style_prefer_inferred_anonymous_type_member_names = true
#IDE0045
dotnet_style_prefer_conditional_expression_over_assignment = true:silent
#IDE0046
dotnet_style_prefer_conditional_expression_over_return = true:silent
#IDE0054
dotnet_style_prefer_compound_assignment = true
#IDE0058
csharp_style_unused_value_expression_statement_preference = discard_variable
#IDE0059
csharp_style_unused_value_assignment_preference = discard_variable

#IDE0018
csharp_style_inlined_variable_declaration = false
#IDE0034
csharp_prefer_simple_default_expression = true:suggestion
#IDE0039
csharp_style_pattern_local_over_anonymous_function = true
#IDE0042
csharp_style_deconstructed_variable_declaration = false
#IDE0056
csharp_style_prefer_index_operator = false:suggestion
#IDE0057
csharp_style_prefer_range_operator = false:suggestion

# Null-checking preferences
#IDE0029
dotnet_style_coalesce_expression = true
#IDE0031
dotnet_style_null_propagation = true
#IDE0041
dotnet_style_prefer_is_null_check_over_reference_equality_method = true
#IDE1005
csharp_style_conditional_delegate_call = true

# Parameter preferences
#IDE0060
dotnet_code_quality_unused_parameters = all

dotnet_style_operator_placement_when_wrapping = beginning_of_line
dotnet_style_prefer_simplified_boolean_expressions = true:suggestion
dotnet_style_prefer_simplified_interpolation = true:suggestion

# Suppression preferences
dotnet_remove_unnecessary_suppression_exclusions = none

#### C# Coding Conventions ####

# var preferences (IDE0007 and IDE0008)
csharp_style_var_elsewhere = false
csharp_style_var_for_built_in_types = false
csharp_style_var_when_type_is_apparent = false

# Expression-bodied members
#IDE0021
csharp_style_expression_bodied_constructors = false
#IDE0022
csharp_style_expression_bodied_methods = false
#IDE0023 and IDE0024
csharp_style_expression_bodied_operators = false
#IDE0025
csharp_style_expression_bodied_properties = false
#IDE0026
csharp_style_expression_bodied_indexers = false
#IDE0027
csharp_style_expression_bodied_accessors = false
#IDE0053
csharp_style_expression_bodied_lambdas = false
#IDE0061
csharp_style_expression_bodied_local_functions = false

# Pattern matching preferences
#IDE0019
csharp_style_pattern_matching_over_as_with_null_check = true
#IDE0020
csharp_style_pattern_matching_over_is_with_cast_check = true
#IDE0066
csharp_style_prefer_switch_expression = false

csharp_style_prefer_not_pattern = true:suggestion
csharp_style_prefer_pattern_matching = true:silent

# Code-block preferences
#IDE0011
csharp_prefer_braces = true
#IDE0063
csharp_prefer_simple_using_statement = true

# 'using' directive preferences
csharp_using_directive_placement = outside_namespace

# Modifier preferences
#IDE0036
csharp_preferred_modifier_order = public,private,protected,internal,static,extern,new,virtual,abstract,sealed,override,readonly,unsafe,volatile,async
#IDE0040
dotnet_style_require_accessibility_modifiers = always
#IDE0044
dotnet_style_readonly_field = false
#IDE0062
csharp_prefer_static_local_function = true


#### C# Formatting Rules ####

# New line preferences
csharp_new_line_before_open_brace = all
csharp_new_line_before_else = true
csharp_new_line_before_catch = true
csharp_new_line_before_finally = true
csharp_new_line_before_members_in_anonymous_types = true

# Indentation preferences
csharp_indent_case_contents = true
csharp_indent_switch_labels = true
csharp_indent_block_contents = true
csharp_indent_braces = false
csharp_indent_case_contents_when_block = false

# Space preferences
csharp_space_after_cast = false
csharp_space_after_colon_in_inheritance_clause = true
csharp_space_after_comma = true
csharp_space_after_dot = false
csharp_space_after_keywords_in_control_flow_statements = true
csharp_space_after_semicolon_in_for_statement = true
csharp_space_around_binary_operators = before_and_after
csharp_space_around_declaration_statements = false
csharp_space_before_colon_in_inheritance_clause = true
csharp_space_before_comma = false
csharp_space_before_dot = false
csharp_space_before_open_square_brackets = false
csharp_space_before_semicolon_in_for_statement = false
csharp_space_between_empty_square_brackets = false
csharp_space_between_method_call_empty_parameter_list_parentheses = false
csharp_space_between_method_call_name_and_opening_parenthesis = false
csharp_space_between_method_call_parameter_list_parentheses = false
csharp_space_between_method_declaration_empty_parameter_list_parentheses = false
csharp_space_between_method_declaration_name_and_open_parenthesis = false
csharp_space_between_method_declaration_parameter_list_parentheses = false
csharp_space_between_parentheses = false
csharp_space_between_square_brackets = false

# Wrapping preferences
csharp_preserve_single_line_blocks = false
csharp_preserve_single_line_statements = false

#### Naming styles ####

# Naming rules

# Namespaces, Classes, Structs, Enums, Properties, Methods, Events, Delegates, Local Functions
dotnet_naming_rule.pascal_case.severity = warning
dotnet_naming_rule.pascal_case.symbols = pascal_case_symbols
dotnet_naming_rule.pascal_case.style = pascal_case_style

dotnet_naming_symbols.pascal_case_symbols.applicable_kinds = namespace, class, struct, enum, property, method, event, delegate, local_function
dotnet_naming_symbols.pascal_case_symbols.applicable_accessibilities = public, internal, private, protected, protected_internal, private_protected, local

dotnet_naming_style.pascal_case_style.capitalization = pascal_case

# Interfaces
dotnet_naming_rule.interface_should_be_begins_with_i.severity = warning
dotnet_naming_rule.interface_should_be_begins_with_i.symbols = interface_symbols
dotnet_naming_rule.interface_should_be_begins_with_i.style = begins_with_i

dotnet_naming_style.begins_with_i.required_prefix = I
dotnet_naming_style.begins_with_i.capitalization = pascal_case

dotnet_naming_symbols.interface_symbols.applicable_kinds = interface
dotnet_naming_symbols.interface_symbols.applicable_accessibilities = public, internal, private, protected, protected_internal, private_protected

# Private Fields
dotnet_naming_rule.private_members_with_underscore.severity = warning
dotnet_naming_rule.private_members_with_underscore.symbols = private_fields
dotnet_naming_rule.private_members_with_underscore.style = prefix_underscore

dotnet_naming_style.prefix_underscore.required_prefix = _
dotnet_naming_style.prefix_underscore.capitalization = camel_case

dotnet_naming_symbols.private_fields.applicable_kinds = field
dotnet_naming_symbols.private_fields.applicable_accessibilities = private
dotnet_naming_symbols.private_fields.required_modifiers = private

# Public Fields
dotnet_naming_rule.public_members_fields.severity = warning
dotnet_naming_rule.public_members_fields.symbols = public_fields_symbols
dotnet_naming_rule.public_members_fields.style = public_fields_style

dotnet_naming_style.public_fields_style.capitalization = camel_case

dotnet_naming_symbols.public_fields_symbols.applicable_kinds = field
dotnet_naming_symbols.public_fields_symbols.applicable_accessibilities = public
dotnet_naming_symbols.public_fields_symbols.required_modifiers = public

# Parameters, Type Parameters and Locals
dotnet_naming_rule.parameters_fields.severity = warning
dotnet_naming_rule.parameters_fields.symbols = parameters_symbols
dotnet_naming_rule.parameters_fields.style = parameters_style

dotnet_naming_style.parameters_symbols.capitalization = camel_case

dotnet_naming_symbols.parameters_style.applicable_kinds = parameter, type_parameter, local

# Consts
dotnet_naming_rule.const_fields.severity = warning
dotnet_naming_rule.const_fields.symbols = const_fields
dotnet_naming_rule.const_fields.style = const_style

dotnet_naming_style.const_style.word_separator = _
dotnet_naming_style.const_style.capitalization = all_upper

dotnet_naming_symbols.const_fields.required_modifiers = const

.omnisharp

{
    "RoslynExtensionsOptions": {
        "EnableAnalyzersSupport": true,
    },
    "FormattingOptions": {
        "enableEditorConfigSupport": true
    }
}

settings.json

// VSCode Settings
}    
    "omnisharp.enableEditorConfigSupport": true,
    "omnisharp.useGlobalMono": "always",
    "omnisharp.enableRoslynAnalyzers": true,
    "omnisharp.enableImportCompletion": true,
    "[csharp]": {
        "editor.defaultFormatter": "ms-dotnettools.csharp"
    },
    "omnisharp.enableMsBuildLoadProjectsOnDemand": true
}

Working Versions

VSCode 1.49.3 (OSX)

Package
  C# 1.23.2