Csharp/CSharp Tutorial/struct/struct unsafe code

Access members via ->

When you access a member of a structure through a pointer, you must use the arrow operator, which is ->, rather than the dot (.) operator.

<source lang="csharp">using System; using System.Globalization; struct Point {

 public int x;
 public int y;
 public override string ToString() 
 {
   return "(" + x + "," + y + ")";
 }

}

public class MainClass{

 static void Main(string[] args)
 {
   Console.WriteLine("Access members via ->");
   unsafe
   {
     Point point;
     Point* p = &point;
     p->x = 100;
     p->y = 200;
     Console.WriteLine(p->ToString());
   }
 }

}</source>

Access members via ->
(100,200)

struct with unsafe code(pointer)

<source lang="csharp">using System; using System.Globalization; public struct Node {

 public int Value;
 public unsafe Node* Left;
 public unsafe Node* Right;

} public class MainClass{

 static void Main(string[] args)
 {
   Node n = new Node();
   n.Value = 9;
 }

}</source>

Use pointer indirection and . operator

<source lang="csharp">using System; using System.Globalization; struct Point {

 public int x;
 public int y;
 public override string ToString() 
 {
   return "(" + x + "," + y + ")";
 }

}

public class MainClass{

 static void Main(string[] args)
 {
   Console.WriteLine("Access members via.");
   unsafe
   {
     Point point;
     Point* p = &point;
     (*p).x = 100;
     (*p).y = 200;
     Console.WriteLine((*p).ToString());
   }
 }

}</source>

Access members via.
(100,200)