Introduce Field

public class DemoForm:Form
{
   private Panel myPanel;
   
   public DemoForm()
   {
      myPanel.Controls.Add(new Button());
      ...
   }
}

public class DemoForm:Form
{
   private Panel myPanel;
   private Button myButton;
   
   public DemoForm()
   {
      myButton = new Button();
      myPanel.Controls.Add(myButton);
      ...
   }
}

To introduce a field

1. Select the expression in the editor, and then do one of the following:

2. Tip   You may find using the Ctrl + W (extend selection) shortcut to be a great tool for selecting expressions before applying the Introduce Field refactoring.

3. • On the main menu, click ReSharper | Refactor | Introduce Field.
   • Right-click the selection, and on the shortcut menu click Refactor | Introduce Field.
   • Pres Ctrl + Alt + D .
   • Press Ctrl + Shift + R, and then select Introduce Field.

4. The Introduce Field dialog box opens.

   

2. In the Type list, select the type of the new field. Note that you can see not only the type of the selected expression, but also all the types that it inherits and that are valid in this context.
3. In the Name text box, type the field name.
4. In the Initialize in group, select where to initialize the field: in the class member where you selected the expression, in the field declaration, or in the class constructors.
5. In the Visibility group, select the visibility of the new field.
6. If there are several expression usages in code, the Replace all occurences of expression check box becomes available. Select the check box if you want to replace the expression usages with the new field.
7. If you want to create a read-only field, select the Declare readonly check box.
8. If the selected expression is a constant value, the Introduce constant check box becomes available. Select it if you want to introduce a contstant field.
9. Click Continue.

If no conflicts are found, the changes are applied immediately.

See Also

Refactoring Code