Diferencia entre Int64 y UInt64 en C#

Int64 : Este Int64 -9,223,372,036,854,775,808 a +9, 223,372,036,854,775,807

// C# program to show the
// difference between Int64
// and UInt64
  
using System;
using System.Text;
  
public
class GFG {
  
  // Main Method
  static void Main(string[] args) {
  
    // printing minimum & maximum values
    Console.WriteLine("Minimum value of Int64: " 
                      + Int64.MinValue);
    Console.WriteLine("Maximum value of Int64: " 
                      + Int64.MaxValue);
    Console.WriteLine();
  
    // Int64 array
    Int64[] arr1 = {-3, 0, 1, 3, 7};
  
    foreach (Int64 i in arr1)
    { 
      Console.WriteLine(i);
    }
  }
}

Producción:

Minimum value of Int64: -9223372036854775808
Maximum value of Int64: 9223372036854775807

-3
0
1
3
7

UInt64 : Este UInt64 0 a

// C# program to show the 
// difference between Int64 
// and UInt64
  
using System;
using System.Text;
  
public class GFG{
      
    // Main Method
    static void Main(string[] args)
    {
  
        //printing minimum & maximum values
        Console.WriteLine("Minimum value of UInt64: "
                          + UInt64.MinValue);
        Console.WriteLine("Maximum value of UInt64: "
                          + UInt64.MaxValue);
        Console.WriteLine();
          
        //Int64 array
        UInt64[] arr1 = { 13, 0, 1, 3, 7};
          
        foreach (UInt64 i in arr1)
        {
            Console.WriteLine(i);
        }
    }
}

Producción:

Minimum value of UInt64: 0
Maximum value of UInt64: 18446744073709551615

13
0
1
3
7

Diferencias entre Int64 y UInt64 en C#

Int64 variable_name;

UInt64 variable_name;