Configure formatting rules

1. In the editor, select a block of code where you want to formatting.

2. Press Alt+Enter and choose Reformat and cleanup | Configure code style.

3. In the dialog that opens, you will see all syntax style and formatting rules that affect the selected code block. The code block itself will be surrounded with a dotted frame:

   

4. As you change the formatting rules, you will see how they affect the code in the selected block.

5. Click Save in the dialog to apply the modifications and let JetBrains Rider choose where to save them, or save the modifications to a specific settings layer using the Save To list. For more information, see layer-based settings.

6. Note that you can also choose to export the configured formatting rules to EditorConfig by choosing .editorconfig in the Save To selector.

7. Optionally, you can click Save As Comments. This way your modifications will be saved as comments before and after the selected block. This lets you override desired formatting rules locally without modifying any settings.

8. JetBrains Rider will close the dialog and apply modified formatting rues in the code block.

Learn formatting rules from selection

1. In the editor, select a block of code where you want to analyze formatting.

2. Press Alt+Enter and choose Reformat and cleanup | Detect code style settings.

3. Review the rules that differ from your current settings:

   

4. Click Save in the dialog to apply the modifications and let JetBrains Rider choose where to save them, or save the modifications to a specific settings layer using the Save To list. For more information, see layer-based settings.

5. You can optionally click Save As Comments. This way your modifications will be saved as comments before and after the selected block. This lets you override desired formatting rules locally without modifying any settings.

Learn formatting rules from solution code

1. Press Ctrl+Alt+S or choose File | Settings (Windows and Linux) or JetBrains Rider | Preferences (macOS) from the menu , then choose Editor | Code Style | [C# or C++] on the left.

2. Click Auto-Detect Code Style Rules at the top of the settings page.

3. Review the rules that differ from your current settings and edit them if necessary.

4. Click Save in the dialog to apply the modifications and let JetBrains Rider choose where to save them, or save the modifications to a specific settings layer using the Save To list. For more information, see layer-based settings.

Change an individual formatting rule with a comment

1. Find the name of formatting rule that you want to tweak. You can look it up on the Editor | Code Style | [Language] page of JetBrains Rider settings Ctrl+Alt+S.

2. When you know the name of the rule, you can look up its ID in the Index of EditorConfig properties — use search in your browser. For example, if you want to find the rule that triggers the space before the semicolon, search for before semicolon and you will find the ID: space_before_semicolon.

3. When you found the ID of the rule on the index web page, click the description link to learn which values are allowed for this rule. Following the example with space_before_semicolon, it can accept true or false.

4. Add the following comment before the code where you want to change the rule:

   // @formatter:<rule_ID> <value>

   For example, to enable spaces before the semicolon, add:

   // @formatter:space_before_semicolon true

   .

5. The new value for the rule will apply until the end of the file. If you want to go back to the value configured in the settings, add the following comment:

   // @formatter:<rule_ID> restore

   For example:

   // @formatter:space_before_semicolon restore

   .