Reorder Parameters is a Visual C# refactoring operation that provides an easy way to change the order of the parameters for methods, indexers, and delegates. Reorder Parameters changes the declaration, and at any locations where the member is called, the parameters are rearranged to reflect the new order.
To perform the Reorder Parameters operation, put the cursor on or next to a method, indexer, or delegate. When the cursor is in position, invoke the Reorder Parameters operation by pressing the keyboard shortcut, or by clicking the command from a shortcut menu.
You cannot reorder the first parameter in an extension method.