Convert Static to Extension Method refactoring
This refactoring helps you convert a static method to an extension method, provided that the static method:
Has at least one parameter.
Resides in a non-generic, non-nested static class.
Consider the following example:
Convert a static method into an extension method
Place the caret at the declaration or a usage of a static method in the editor, or select it in the File Structure window.
Do one of the following:
Press Ctrl+Shift+R and then choose Convert Static Method to Extension
Choosein the main menu.
If no conflicts are found, JetBrains Rider performs the refactoring immediately. Otherwise, it prompts you to resolve conflicts.