Analysis of the differences between string and StingBuilder memory in C

This article analyzes the memory differences between string and StingBuilder in C#, which is helpful to better grasp the usage of string and StingBuilder in C# programming. Share to everybody for everybody reference. The specific methods are as follows:

The difference between string and StringBuilder refer to MSDN. This article programmatically demonstrates how they differ in memory, and therefore in their behavior.

Take a look at this code first:

// Example:  string  Memory model of 
namespace ConsoleApplication2
{
  class Program
  {
    static void Main(string[] args)
    {
      string a = "1234";
      string b = a;//a,and b point to the same address
      Console.WriteLine(a);
      Console.WriteLine(b);
 
      a = "5678";
      Console.WriteLine(a);
      Console.WriteLine(b);//That b's value is not changed means string's value cann't be changed

      Console.ReadKey();
    } 
  }
}

Output:

1234
1234
5678;change a's value,b's value is not changed
1234

// Example:  StringBuilder  Memory model of 
namespace ConsoleApplication3
{
  class Program
  {
    static void Main(string[] args)
    {
      StringBuilder a = new StringBuilder("1234");
      StringBuilder b = new StringBuilder();
      b = a;
      a.Clear();
      a.Append("5678");
      Console.WriteLine(a);
      Console.WriteLine(b);
      Console.ReadKey();
    }
    
  }
}

Output:
5678
5678

Hopefully this article has helped you with your C# programming.