Remove Variable

• Aug 19, 2021

Purpose

Removes a variable that is never used in code.

Availability

Available when the cursor is in an unused variable.

How to Use

1. Place the caret in an unused variable. For example, in the “methodSymbol” variable.

   C#

   public class RemoveUnusedVariable {
       string GetMethodName(ISymbol symbol) {
           if (symbol is IMethodSymbol methodSymbol) {
               return symbol.Name;
           }
           return null;
       }
   }
   

   VB.NET

   Public Class RemoveVariable
       Private Function FormatString(ByVal temperature As Decimal) As String
           Dim temp As Decimal
           Dim s As String = String.Format("the temperature is {0}", temperature)
           Return s
       End Function
   End Class
   

2. Press the Ctrl + . or Ctrl + ~ shortcut to invoke the Code Actions menu.

   

3. Select Unused Local -> Remove ‘xxx’ Variable from the menu.

After execution, the Refactoring removes the unused variable.

C#

public class RemoveUnusedVariable {
    string GetMethodName(ISymbol symbol) {
        if (symbol is IMethodSymbol) {
            return symbol.Name;
        }
        return null;
    }
}

VB.NET

Public Class RemoveVariable
    Private Function FormatString(ByVal temperature As Decimal) As String
        Dim s As String = String.Format("the temperature is {0}", temperature)
        Return s
    End Function
End Class