Inline Field refactoring

ReSharper | Refactor | Inline | Inline…
Control+Alt+N
ReSharper_InlineVariable

This refactoring helps you replace a field with its value and remove its declaration. For obvious reasons, the refactoring can be applied to a field that has only one write usage. This may be a constant or readonly field, or a field that is initialized and used in the same function.

If the target field has conditional or complex assignment and it is used within a single function, ReSharper will create a local variable to handle the value of the field.

In the example below, we use this refactoring to inline a constant that has a single usage:

class Shape
{
  private const string ErrorMessage = "Something has failed";

  public void Draw(string s)
  {
    try { /*draw*/ }
    catch (Exception e)
    {
      Console.WriteLine("{0} : {1}", ErrorMessage, e);
    }
  }
}

                

class Shape
{
  public void Draw(string s)
  {
    try { /*draw*/ }
    catch (Exception e)
    {
      Console.WriteLine("{0} : {1}", "Something has failed", e);
    }
  }
}

                

Inline a field

Place the caret at the declaration or a usage of a field, which has only one write usage.
Do one of the following:
- Press Control+Alt+N and then choose Inline Field
- Press Control+Shift+R and then choose Inline Field
- Right-click and choose Refactor | Inline Field in the context menu.
- Choose ReSharper | Refactor | Inline | Inline… in the main menu.
If no conflicts are found, ReSharper performs the refactoring immediately. Otherwise, it prompts you to resolve conflicts.

This feature is supported in the following languages and technologies:

The instructions and examples given here address the use of the feature in C#. For details specific to other languages, see corresponding topics in the ReSharper by Language section.

Last modified: 08 March 2021