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Compiler Error CS0209

  • Article

The type of local declared in a fixed statement must be a pointer type

The variable that you declare in a fixed statement must be a pointer. For more information, see Unsafe Code and Pointers (C# Programming Guide).

The following sample generates CS0209:

// CS0209.cs
// compile with: /unsafe

class Point
{
   public int x, y;
}

public class MyClass
{
   unsafe public static void Main()
   {
      Point pt = new Point();

      fixed (int i)    // CS0209
      {
      }
      // try the following lines instead
      /*
      fixed (int* p = &pt.x)
      {
      }
      fixed (int* q = &pt.y)
      {
      }
      */
   }
}