<p>I can't seem to find that option.</p>

<p>Surely it's in there?</p>

[{'answer_id': 58875, 'author': 'Alex Duggleby', 'author_id': 5790, 'author_profile': 'https://Stackoverflow.com/users/5790', 'pm_score': 7, 'selected': True, 'text': '<p>That would be Tools > Options</p>\n\n<p>Text Editor > All Languages > Line Numbers (at the bottom right)</p>\n'}, {'answer_id': 58877, 'author': 'Iain Holder', 'author_id': 1122, 'author_profile': 'https://Stackoverflow.com/users/1122', 'pm_score': 2, 'selected': False, 'text': '<p>Tools -> Options -> Text Editor -> All languages.  Near the bottom.</p>\n'}, {'answer_id': 58880, 'author': 'Gishu', 'author_id': 1695, 'author_profile': 'https://Stackoverflow.com/users/1695', 'pm_score': 2, 'selected': False, 'text': '<p>Main Menu > Tools > Options<br>\nText Editor (Tree) > C# > Display group (Line numbers checkbox)</p>\n\n<p>that was easy :)</p>\n'}, {'answer_id': 58881, 'author': 'Gulzar Nazim', 'author_id': 4337, 'author_profile': 'https://Stackoverflow.com/users/4337', 'pm_score': 3, 'selected': False, 'text': '<p>Go to Tools - Options - Text Editor - All Languages - General, and check Line numbers to show line numbers for all files.  </p>\n\n<p>If you just want to see (or not see) the line numbers of a specific file, you can override this global setting by going to the Text Editor -  - General page.</p>\n\n<p><a href="http://blogs.msdn.com/saraford/archive/2007/08/30/did-you-know-how-to-show-line-numbers-in-the-editor.aspx" rel="noreferrer">Did you know... how to show line numbers in the editor?</a></p>\n'}, {'answer_id': 516480, 'author': 'Community', 'author_id': -1, 'author_profile': 'https://Stackoverflow.com/users/-1', 'pm_score': 3, 'selected': False, 'text': '<p>Don\'t forget to check "[x] Show all settings" at the bottom of the form, otherwise you won\'t be able to see "All Languages".</p>\n'}]
['https://Stackoverflow.com/questions/58874', 'https://Stackoverflow.com', 'https://Stackoverflow.com/users/730/']