ReSharper 2023.3 Help

Basic completion

ReSharper's basic completion suggests names of classes, methods, variables, keywords, and any other symbols that are available within the current visibility scope including extension methods that were previously imported. Many other context-specific suggestions, like live templates, code generation suggestions, unit test categories are also available in the completion list.

By default, suggestions of basic completion also include items from Smart completion and Import Symbol Completion. If you want to change the default behavior, use the corresponding controls on the Environment | IntelliSense | Completion Behavior page of ReSharper options (Alt+R, O) .

The list of completion suggestions is the same as that of Automatic completion.

Invoke basic completion

  1. Place the caret at the position where you're going to type your code.

  2. Press Control+Space.

  3. Select a suggestion from the list and press Enter or start typing the initial letters of the identifier or its CamelHumps abbreviation to narrow down the list of suggestions.

When you use code completion over existing code items, you can either insert the selected completion suggestion before the existing item by pressing Enter or replace the existing identifier with the selected suggestion by pressing Tab. If necessary, you can change the default shortcuts on the Environment | IntelliSense | Completion Characters page of ReSharper options (Alt+R, O) .

When you select items in completion lists using keyboard, the selection will jump to the first item after the last item and vice versa. You can disable this behavior by clearing Loop selection around ends of a list on the Environment | IntelliSense | Completion Appearance page of ReSharper options (Alt+R, O) .

Complete method calls

When choosing a method call from the completion list, by default ReSharper automatically inserts a pair of parentheses ( ) and sets the caret between them. You can change this behavior with the Automatically insert parenthesis after completion option on the Environment | IntelliSense | Completion Behavior page of ReSharper options (Alt+R, O) .

Note that you can type the opening parenthesis ( instead of Tab or Enter when a method is selected in the completion list. In this case the pair of parentheses will be inserted regardless of this option.

Exclude types and namespaces from completion suggestions

You may want some types or namespaces not to be suggested, for example, if you have something similar to a system type in your solution, say MyFramework.MyCollections.List, but you are not actually using it. To exclude such items from the suggestions, add them to the Exclude from import and completion list on the Code Editing | Type Import page of ReSharper options (Alt+R, O) .

The format of the entries is Fully.Qualified.Name, Fully.Qualified.Name.Prefix*, or *Fully.Qualified.Name.Suffix. Generic types are specified as List`1.

Examples of basic completion

You can use the following examples to get an idea of how basic completion works with various code items:

Suggesting type-based variable names

Commonly used names for fields and variables are suggested depending on their type. After entering the type of variable, press Control+Space. The look-up list displays the suggested names:

ReSharper: Suggesting type-based variable names in code completion

If you enter a variable name prefix, ReSharper will append it to each suggested name:

ReSharper: Suggesting type-based variable names in code completion

You can specify a prefix and/or a suffix for all new variable names on the Code Editing | C# | Naming Style page of ReSharper options (Alt+R, O) . If you do that, completion items will be modified accordingly:

ReSharper: Suggesting type-based variable names in code completion

Suggesting members of a class

ReSharper: Suggesting members of a class in code completion

Suggesting visible types

ReSharper: Suggesting visible types in code completion

Suggesting C# keywords

ReSharper: Suggesting C# keywords in code completion

Suggesting 'this' keyword for static methods in static classes

ReSharper: Suggesting 'this' keyword for static methods in static classes

Completion for enum members

ReSharper: Completion for enum members
ReSharper: Completion for enum members

Using CamelHumps in code completion

ReSharper: Using CamelHumps in code completion

Completion for unresolved symbols

Early used names of data types and their members are suggested, even if they are not declared anywhere in the code and cannot be resolved.

ReSharper: Completion for unresolved symbols

Completion for argument names

ReSharper: Completion for argument names

Suggesting members of a dynamic type

ReSharper: Suggesting members of a dynamic type

Suggesting existing partial classes

When you type partial class, names of partial classes in the current scope are added to the suggestions list, thus helping you to quickly create new parts of existing partial classes.

Suggestions for existing partial classes in ReSharper code completion

Applicability in different languages

This feature is supported in the following languages and technologies:

Language: C#

Language: VB.NET

Language: C++

Language: HTML

Language: ASP.NET

Language: Razor

Language: JavaScript

Language: TypeScript

Language: CSS

Language: XML

Language: XAML

Language: Resx

Language: Build Scripts

Language: Protobuf

Language: JSON

Feature is available in C#

Feature is available in Visual Basic

Feature is available in C++

Feature is available in HTML

Feature is available in ASP.NET

Feature is available in Razor

Feature is available in JavaScript

Feature is available in TypeScript

Feature is available in CSS

Feature is not available in XML

Feature is available in XAML

Feature is not available in Resource files

Feature is available in build script files

Feature is not available in Protobuf

Feature is available in JSON

The instructions and examples given here address the use of the feature in C#. For more information about other languages, refer to corresponding topics in the ReSharper by language section.

Last modified: 18 March 2024