索引结构在C＃8.0中引入。它表示可用于索引集合或序列的类型，并且可以从头开始或从头开始。您可以在Index结构提供的End Property的帮助下找到指向指定集合的最后一个元素之外的索引。
句法：
public static property Index End { Index get(); };范例1：
// C# program to illustrate how
// to get the End index
using System;
namespace example {
class GFG {
// Main Method
static void Main(string[] args)
{
// Creating new indexes
// Using Index() constructor
var in1 = new Index(1, true);
var in2 = new Index(3, false);
// Getting the end index
var res1 = Index.End;
// Displaying the index
Console.WriteLine("Index: {0}", in1);
Console.WriteLine("Index: {0}", in2);
Console.WriteLine("End Index: {0}", res1);
}
}
}
输出：
Index: ^1
Index: 3
End Index: ^0
范例2：
// C# program to illustrate the
// concept of the End index
using System;
namespace example {
class GFG {
// Main Method
static void Main(string[] args)
{
string[] greetings = new string[] {"Hello", "Hola", "Namaste",
"Bonjour", "Ohayo", "Ahnyounghaseyo"};
// Get the end index
var res = Index.End;
// Checking the given index
// is the end index or not
if (res.Equals (^0) == true) {
Console.WriteLine("The given index is "+
"beyond the last element");
}
else {
Console.WriteLine("The given index is not"+
" beyond the last element");
}
}
}
}
输出：
The given index is beyond the last element