unsafe and fixed block : Unsafe Code « Language Basics « C# / C Sharp

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C# / C Sharp » Language Basics » Unsafe CodeScreenshots 
unsafe and fixed block
  

public class MyValue
{
    public int id;
    public MyValue(int id) { this.id = id; }
}
   
class UnsafeClassApp
{
    unsafe public static void Swap(int* pi, int* pj)
    {
        int tmp = *pi;
        *pi = *pj;
        *pj = tmp;
    }
   
    static void Main(string[] args)
    {
        MyValue i = new MyValue(123);
        MyValue j = new MyValue(456);
        Console.WriteLine("Before Swap:\ti = {0}, j = {1}", i.id, j.id);
   
        unsafe
        {
             (int* pi = &i.id, pj = &j.id)
            {
                Swap(pi, pj);
            }
        }
   
        Console.WriteLine(
            "After Swap:\ti = {0}, j = {1}", i.id, j.id);
    }
}

   
  
Related examples in the same category
1.int pointer variable
2.Unsafe Methods
3.Accessing Structure Members with a Pointer
4.Supported sizeof() Types
5.Fixing Managed Data in Memory
6.Allocating Memory from the Stack
7.Get variable address in unsafe mode
8.Unsafe code: get data type size
9.Address and size of pointer object
10.Using the unsafe keyword
11.object pointer
12.Use unsafe method to clone array
13.mark method as unsafe
14.Use unsage code to swap two integers
15.Pointer for struct
16.Compare pointer
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