Use IsNullOrEmpty

• Jun 26, 2019

Converts an expression that checks whether a string is null or empty to a String.IsNUllOrEmpty call.

Availability

Available from the context menu or via shortcuts:

• when the caret is anywhere within an expression checking whether a string is null or empty.

  Note

  If the initial expression checks a string only for null or only for empty, the Use IsNullOrEmpty code provider is available instead of the refactoring.

Example

C#

private string ProcessText(string text)
{
  if (│text==null || text==string.Empty)
    return string.Empty;
  return text.Replace('_',' ');
}

VB.NET

Private Function ProcessText(ByVal text As String) As String
  If │text = Nothing Or text = String.Empty Then
    Return String.Empty
  End If
  Return text.Replace("_", " ")
End Function

Result:

C#

private string ProcessText(string text)
{
  if(String.IsNullOrEmpty(text))
    return string.Empty;
  return text.Replace('_', ' ');
}

VB.NET

Private Function ProcessText(ByVal text As String) As String
  If String.IsNullOrEmpty(text) Then
    Return String.Empty
  End If
  Return text.Replace("_", " ")
End Function

Screenshot