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Compiler Error CS0100

The parameter name 'parameter name' is a duplicate

A method declaration used the same parameter name more than once. Parameter names must be unique in a method declaration. For more information, see Methods.

The following sample generates CS0100:

// CS0100.cs  
namespace x  
{  
   public class a  
   {  
      public static void f(int i, char i)   // CS0100  
      // try the following line instead  
      // public static void f(int i, char j)  
      {  
      }  
  
      public static void Main()  
      {  
      }  
   }  
}