如何在 C# 中获取索引值？
在 C# 8.0 中引入了索引结构。它表示可用于索引集合或序列的类型，并且可以从开始或结束开始。您可以借助索引结构提供的值属性获得索引值。
语法:
public int Value { int get(); };
例 1:
// C# program to illustrate the
// concept of the value property
using System;
namespace example {
class GFG {
// Main Method
static void Main(string[] args)
{
// Creating new indexes
// Using Index() constructor
var val1 = new Index(1, true);
var val2 = new Index(2, true);
var val3 = new Index(1, false);
var val4 = new Index(3, false);
// Getting the value of the index
var res1 = val1.Value;
var res2 = val2.Value;
var res3 = val3.Value;
var res4 = val4.Value;
// Display index value
Console.WriteLine("Index value is : " + res1);
Console.WriteLine("Index value is : " + res2);
Console.WriteLine("Index value is : " + res3);
Console.WriteLine("Index value is : " + res4);
}
}
}
输出:
Index value is : 1
Index value is : 2
Index value is : 1
Index value is : 3
例 2:
// C# program to illustrate the
// concept of the value property
using System;
namespace example {
class GFG {
// Main Method
static void Main(string[] args)
{
// Creating and initializing an array
string[] greetings = new string[] {"Hello", "Hola", "Namaste",
"Bonjour", "Ohayo", "Ahnyounghaseyo"};
// Creating index
// Using Index() constructor
var val1 = new Index(1, true);
var val2 = new Index(2, false);
// Checking the given both the
// index values are equal or not
if (val1.Value.Equals(val2.Value) == true)
{
Console.WriteLine("Both the indexes are equal and"+
" their elements are : {0}, {1}", greetings[val1],
greetings[val2]);
}
else {
Console.WriteLine("Both the indexes are not equal"+
" and their elements are : {0}, {1}", greetings[val1],
greetings[val2]);
}
}
}
}
输出:
Both the indexes are not equal and their elements are : Ahnyounghaseyo, Namaste
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