Use fixed to put address of value into a pointer : Pointer « unsafe « C# / CSharp Tutorial






using System; 
 
class MyClass { 
  public int num; 
  public MyClass(int i) { num = i; } 
} 
 
class FixedCode { 
  unsafe public static void Main() { 
    MyClass o = new MyClass(19); 
 
    fixed (int* p = &o.num) {  
 
      Console.WriteLine("Initial value of o.num is " + *p); 
   
      *p = 10; // assign the to count via p 
     
      Console.WriteLine("New value of o.num is " + *p); 
    } 
  } 
}
Initial value of o.num is 19
New value of o.num is 10








36.3.Pointer
36.3.1.Declaring a Pointer
36.3.2.IntPtrs and unsafe bit-twiddling
36.3.3.The & is a unary operator that returns the memory address of its operand
36.3.4.Use fixed to put address of value into a pointer
36.3.5.Demonstrate the effects of pointer arithmethic
36.3.6.An array name with an index yields a pointer to the start of the array
36.3.7.Index pointer
36.3.8.Pointer arithmetic
36.3.9.Get a pointer to the start of a string and display the contents of string via pointer
36.3.10.Pointer of a pointer
36.3.11.Assign value of myInt using pointer
36.3.12.Safe Swap
36.3.13.Unsafe swap
36.3.14.C# Pointer Operators
36.3.15.Modifying an Immutable String with Pointer
36.3.16.Pointer Arithmetic