ReSharper provides a variety of features to get additional info about code, select and highlight structural blocks of code, as well as apply local code transformations.
ReSharper extends the default highlighting support of Visual Studio with custom highlighting of code items in different languages. For example, you can easily distinguish between local variables and fields in your code. To switch on ReSharper's highlighting, go to Color Identifiers. The custom color for each item is configurable.and select
Context actions are code transformations helpers available right in the editor. In contrast to quick-fixes, context actions do not aim to resolve a problem or improve your code, instead, they allow you to quickly introduce minor changes like changing access modifiers, generating a code that checks for null, convert 'foreach' to 'for', etc.
If one or more context actions are available for the current caret position, ReSharper displays the corresponding icon . You can either click the icon or press Alt+Enter, and then select an appropriate action.
ReSharper provides hundreds of context actions in all supported languages. You can enable or disable specific context actions in the ReSharper Options dialog box.
This feature inserts necessary syntax elements (braces, semicolons etc.) and sets you in position to start the next statement, saving you from excessive juggling with the caret. As you work, keep in mind the default shortcut for this feature: Ctrl+Shift+Enter.
Complete Statement (also known as Smart Enter) comes to rescue in numerous scenarios, including auto-closing
parentheses, adding semicolons, completing
for statements, and so on.
For example, whenever you declare a new method, Complete Statement comes in handy after specifying method parameters (see screenshots). If you press Ctrl+Shift+Enter at this point, ReSharper will automatically insert a closing parenthesis, as well as both braces, and put the caret right where you can proceed with writing the method body.
Regular Expression Assistance
You can choosein the menu to enter various sample strings and see how your regular expression matches these strings. Using this dialog, you can fix your expression and make sure that you get the expected match.
This part of Visual Studio's IntelliSense is also extended in ReSharper. When you call a method, Parameter Info shows you all available method signatures and parameters with relevant documentation in a tooltip. The tooltip appears automatically while you type, or you can display it by pressing Ctrl+Shift+Space. While you are adding new arguments, ReSharper grays out any signatures that become incompatible.
Highlight Matching Delimiters
In VB.NET, the matching
is highlighted when the caret is placed anywhere within or after
End Function. The
matching keyword and its line are highlighted whenever you place the caret within the opening keyword (again,
you can fine-tune this feature).
In XML, matching tags are unobtrusively highlighted, letting you see the
If a matching piece of code scrolls off the screen, an appropriate pop-up appears for your convenience.
When a type name cannot be resolved because you forgot to issue the corresponding namespace import directive in the source code, a small pop-up appears to suggest one or more types to import. Simply press Alt+Enter, and the appropriate namespace import directive will be inserted automatically. Also, you will not lose your current caret position.
For markup files in web applications, ReSharper is able to auto-import user controls (ascx files) based on their usages.
Auto-insertion of Delimiters
When you type
' in the editor, a paired character is inserted
automatically (whenever appropriate). This feature may be easily switched off, but you shouldn't be afraid of
inserting too many closing parentheses, brackets, or quotes by mistake: if the closing parenthesis or quote
already exists, ReSharper will not add the second one.
In XML, as soon as you type an opening quote or bracket, the closing one appears automatically.
ReSharper allows you to quickly change the order of code elements with the press of a key — well, four keys: Ctrl+Shift+Alt+Up/Down/Left/Right. In particular, you can move members up and down, reorder parameters and arguments, move statements within a block, move statements out of or into a block, move XML tags up and down, as well as XML attributes left and right, and so on.
To see the documentation for a certain class, method/function or other symbol right in the editor, position the caret on a code symbol and press Ctrl+Shift+F1. The documentation shows in a pop-up window with clickable links to other resources, most notably MSDN documentation.
Promptly comment or uncomment any block of code by selecting it in the editor and pressing Ctrl+Alt+/ (for line comment) or Ctrl+Shift+/ (for block comments).
You can also use Ctrl+Alt+/ to quickly comment or uncomment the line of code
where the caret is located in the editor if no block code has been selected. In the same circumstances, pressing
Ctrl+Shift+/ inserts the opening block comment (
/*) and the
closing block comment (
*/) immediately before and immediately after the caret position,
or removes them if the caret is positioned inside the commented code block.
Highlight Current Line
You can opt to highlight the line where the caret currently resides with a color. Just select Hightlight current line in the Editor tab of the ReSharper Options dialog box.
You can configure the color of the highlight in the Fonts and Colors tab of Visual Studio's Options dialog box ( ).
The Extend Selection feature helps successively select expanding blocks of code. That is, you can easily select any expression in the code by placing the caret somewhere inside it and pressing Ctrl+Alt+Right a few times. Shrink Selection works in the opposite way and can be applied by pressing Ctrl+Alt+Left.
You can also quickly select the member that your caret is on, or even its containing type, by pressing Ctrl+Shift+[.
Duplicate Line or Selection
Quickly duplicate any line (block) of code by placing the caret at this line in the editor (or, respectively, selecting a block) and pressing Ctrl+D.
Split String Literal
When you have to type lengthy string literals, ReSharper helps you split them into several lines by adding the necessary quotation marks and plus characters: while the caret is within a string literal, press Enter or Shift+Enter to split the string without breaking its value.
Multiple Entries Clipboard
ReSharper provides a special Paste command accessible by pressing Ctrl+Shift+V, which displays the Multiple Entries Clipboard window. It contains references to recent clipboard items with preview, each marked with a figure or letter, which you can easily select between.
Note on shortcuts
All keyboard shortcuts provided in this page are available in ReSharper's default "Visual Studio" keymap. For details on ReSharper's two keymaps, see ReSharper Documentation.