Add files to Git and track changes
Add files to Git
Open the Commit tool window .
Put any files in the Unversioned Files changelist under version control by pressing Ctrl+Alt+A or selecting Add to VCS from the context menu. You can either add the entire changelist or select separate files.
If you have enabled Git integration for your project, JetBrains Rider suggests adding each newly created file under version control. You can change this behavior in the Settings dialog Ctrl+Alt+S under . If you want certain files to always remain unversioned, you can configure Git to ignore them.
All the settings files in the .idea directory should be put under version control except workspace.xml, which stores your local preferences. The workspace.xml file should be marked as ignored by VCS.
Check project files status
JetBrains Rider allows you to check the status of your local working copy compared to the repository version of the project. It lets you see which files have been modified, which new files have been added to Git, and which files are not being tracked by Git.
Open the Commit tool window .
The Changes changelist shows all files that have been modified since you last synchronized with the remote repository (highlighted in blue), and all new files that have been added to Git, but have not been committed yet (highlighted in green).
The Unversioned Files changelist shows all files that have been added to your project, but that are not being tracked by Git.
Track changes to a file in the editor
You can also track changes to a file as you modify it in the editor. All changes are highlighted with change markers that appear in the gutter next to the modified lines and show the type of changes introduced since you last synchronized with the repository. When you commit changes to the repository, change markers disappear.
The changes you introduce to the text are color-coded:
You can manage changes using a toolbar that appears when you hover over a change marker and then click it. The toolbar is displayed together with a frame showing the previous contents of the modified line:
You can roll back changes by clicking 
and explore the differences between the current and the repository version of the current line by clicking 
. To highlight the fragments that were changed, click 
.
Instead of reverting the whole file, you can copy any part of the contents of this popup and paste it into the editor.
Delete files from the repository
If you delete a file that is under version control, it still exists in the repository until you've committed the changes. The deleted file is placed in the active changelist and is highlighted in grey.
Select a file in the Solution Explorer and press Delete or choose Delete from the context menu.
In the dialog that opens, you can choose whether you want to delete this file without searching for usages or to perform safe delete (to make sure that you are deleting an unused file) by checking the Safe delete option.
If any usages have been found, the Usages Detected dialog will pop up listing them. You can view these usages and remove references to this file before deleting it.
Commit the changes to the repository.