You can do full-language text searches on files, using a substring or a regular expression.
To do a full-text search:
If you select Substring, you can check Match Case to limit the search to items with the exact combination of upper case and lower case characters. You can select Match Whole Words Only to exclude matches when the search text comprises only part of the word.
Results are displayed in the Search Results window as Explorer-style file nodes.
If you select one of these nodes, a Search Details panel appears showing the positions where the search text appears in the file. Double-click one of these entries to open the file in the Source Editor. The file will open with the search text highlighted, and the insertion point will be placed just after the selected occurrence of the search text.
Click Show All Details to print a complete list of occurrences of the search text in the Output Window.
Click Show in Explorer to open the Explorer with the file's node selected.