Reorder Parameters Refactoring (C#)


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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 the shortcut menu.


You cannot reorder the first parameter in an extension method.

To reorder parameters

  1. Create a class library named ReorderParameters, and then replace Class1 with the following example code.

    class ProtoClassA
        // Invoke on 'MethodB'.
        public void MethodB(int i, bool b) { }
    class ProtoClassC
        void D()
            ProtoClassA MyClassA = new ProtoClassA();
            // Invoke on 'MethodB'.
            MyClassA.MethodB(0, false);
  2. Place the cursor on MethodB, either in the method declaration or the method call.

  3. On the Refactor menu, click Reorder Parameters.

    The Reorder Parameters dialog box appears.

  4. In the Reorder Parameters dialog box, select int i in the Parameters list, and then click the down button.

    Alternatively, you can drag int i after bool b in the Parameters list.

  5. In the Reorder Parameters dialog box, click OK.

    If the Preview reference changes option is selected in the Reorder Parameters dialog box, the Preview Changes - Reorder Parameters dialog box will appear. It provides a preview of the changes in the parameter list for MethodB in both the signature and the method call.

    1. If the Preview Changes - Reorder Parameters dialog box appears, click Apply.

      In this example, the method declaration and all the method call sites for MethodB are updated.


You can reorder parameters from a method declaration or a method call. Position the cursor on or next to the method or delegate declaration but not in the body.

See Also

Refactoring (C#)