ReSharper automatically analyses your code while you type and can highlight a variety of possible syntax or logical errors. It can also detect and emphasize statements or constructions that you should be warned about (such as, for example, unused or uninitialized variables).
Errors
Red color in the editor is used to indicate errors. Undefined symbols detected by ReSharper are displayed in red color:
For other errors, the statement (or just the erroneous part of it) gets underlined with a red curly line:
You can use the Marker Bar to check whether your code contains errors and to navigate quickly to any of them.
Warnings
Statements or constructs that have warnings associated with them are emphasized with grayed text:
Warnings will be generated among others in the following circumstances:
- redundant using directives;
- declared but never used local variables;
- declared but never used private fields;
- unused private methods;
- unused parameters in private and static methods;
- redundant type casts.
It is always possible to switch off highlighting of specific warnings if you want so, or make ReSharper highlight them as errors instead.
You can use the Marker Bar to check whether your code contains warnings and to navigate quickly to any of them.
Getting information about errors and warnings
There are various ways to get an information about reasons ReSharper highlighted a given statement:
- When the caret is positioned at an erroneous symbol or expression an error or warning message is displayed in the status bar:
- Place a mouse pointer over any highlighted expression to get a popup window with an error or warning message displayed:
- Place a mouse pointer the colored marker on the Marker Bar that corresponds to any highlighted expression. Again, a pop-up window appears:
Tip ReSharper features Quick-Fixes that can be applied to correct common programming mistakes. Please refer to the corresponding help topic.
Navigating between errors
Use the shortcut F2 (Shift + F2) or select ReSharper | Go To | Next Error (respectively, ReSharper | Go To | Previous Error) from the main menu to navigate to the next (respectively, previous) error found in your code.
Please refer to the corresponding help topic to learn more about Code Navigation in ReSharper.
Marker bar
The Marker Bar shows a colored stripe or "marker" for every warning and error in your code. Warning markers are orange, error markers are red. The position of a marker on the bar indicates the relative position of the corresponding error or warning in the file. You can get pop-up tips about the errors and warnings in your code by placing the mouse pointer over the corresponding markers, and you can navigate directly to the relevant lines of code by clicking on them.
Tip It is normal so see many errors in the marker bar while your are working on a file. Many of these errors are eventually resolved as you complete the code. Should any errors remain when you feel your code is complete, it may be time-saving to visit and resolve the errors found before you try to compile your project.
The small box at the top of the Marker Bar is the file status indicator. It shows the overall error status of the current file.
-
- analysis is in process; -
- there is at least one error in the file (compilation will fail); -
- there is at least one warning in the file (but the file will compile); -
- no errors and no warnings in the file.
Place the mouse pointer over the status indicator to display more analysis details:
