Inline Field refactoring

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);
    }
  }
}

tip

The reverse functionality is available with the Introduce Field refactoring refactoring.

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.