Compiler Warning (level 2) CS0253

Possible unintended reference comparison; to get a value comparison, cast the right hand side to type 'type'

The compiler is doing a reference comparison. If you want to compare the value of strings, cast the right side of the expression to type.

The following sample generates CS0253:

C#

// CS0253.cs  
// compile with: /W:2  
using System;  
class MyClass  
{  
   public static void Main()  
   {  
      string s = "11";  
      object o = s + s;  
  
      bool c = s == o;   // CS0253  
      // try the following line instead  
      // bool c = s == (string)o;  
   }  
}