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How to use the IndexOf(,) method of array class in C#?
The IndexOf() method of array class in C# searches for the specified object and returns the index of the first occurrence within the entire one-dimensional Array.
We have set the array.
int[] arr = new int[10]; arr[0] = 100; arr[1] = 200; arr[2] = 300; arr[3] = 400; arr[4] = 500; arr[5] = 600; arr[6] = 700; arr[7] = 800; arr[8] = 900; arr[9] = 1000;
Now use the IndexOf() method and set the element for which you want the index, for example, I have set it for element 800.
int a = Array.IndexOf(arr, 800);
The following is the example showing the usage of IndexOf(,) method in C#.
Example
using System;
class Program {
static void Main() {
int[] arr = new int[10];
arr[0] = 100;
arr[1] = 200;
arr[2] = 300;
arr[3] = 400;
arr[4] = 500;
arr[5] = 600;
arr[6] = 700;
arr[7] = 800;
arr[8] = 900;
arr[9] = 1000;
int a = Array.IndexOf(arr, 800);
Console.WriteLine(a);
}
}Output
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Updated on: 23-Jun-2020
9K+ Views
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