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(, ... Read More

The GetValue() method of array class in C# gets the value at the specified position in the one-dimensional Array. The index is specified as a 32-bit integer.We have set the array values first using the Array.CreateInstance method.Array arr = Array.CreateInstance(typeof(String), 3, 6); arr.SetValue("One", 0, 0); arr.SetValue("Two", 0, 1); arr.SetValue("Three", 0, 2); arr.SetValue("Four", 0, 3); arr.SetValue("Five", 1, 4); arr.SetValue("Six", 1, 5); arr.SetValue("Seven", 1, 2); arr.SetValue("Eight", 1, 3);Then loop throught the array length. This will display all the values using the GetValue() method.for (int i = 0; i < a; i++) for (int j = 0; j < b; j++) Console.WriteLine( arr.GetValue(i, ... Read More

The GetUpperBound() method of array class in C# gets the upper bound of the specified dimension in the Array.Firstly, set the array and get the upperbound as shown below −arr.GetUpperBound(0).ToString()The following is an example stating the usage of GetUpperBound() method in C#.Example Live Demousing System; using System.Collections.Generic; using System.Linq; using System.Text; namespace Demo {    class Program {       static void Main(string[] args) {          Array arr = Array.CreateInstance(typeof(String), 6);          arr.SetValue("One", 0);          arr.SetValue("Two", 1);          arr.SetValue("Three", 3);          arr.SetValue("Four", 4);     ... Read More

Set the unsorted list first.int[] list = {87, 45, 56, 22, 84, 65};Now use a nested for loop to sort the list that is passed to a function.for(int i=0; ilt; arr.Length; i++) {    for(int j=i+1; j

The GetType() method of array class in C# gets the Type of the current instance (Inherited from Object).To get the type.Type tp = value.GetType();In the below example, we are checking the int value using the type.if (tp.Equals(typeof(int))) Console.WriteLine("{0} is an integer data type.", value)The following is the usage of GetType() method in C#.Exampleusing System public class Program {    public static void Main() {       object[] values = { (int) 100, (long) 17111};       foreach (var value in values) {          Type tp = value.GetType();          if (tp.Equals(typeof(int)))     ... Read More

Set a list with some values. Here, we have a list of strings.var cars = new List() {"Mercedes", "Audi", "Jaguar" };To sort, simply use Sort() method.cars.Sort();The following is an example showing how to sort a list in C#.Example Live Demousing System; using System.Collections.Generic; public class Program {    public static void Main() {       var cars = new List() {"Mercedes", "Audi", "Jaguar" };       Console.WriteLine("Original Array =");       foreach (var name in cars) {          Console.WriteLine(name);       }       // sort       cars.Sort();       ... Read More

The GetLowerBound() method of array class in C# gets the lower bound of the specified dimension in the Array.Firstly, set the array and get the lower bound as shown below −arr.GetLowerBound(0).ToString()The following is an example stating the usage of GetLowerBound() method in C#.Example Live Demousing System; using System.Collections.Generic; using System.Linq; using System.Text; namespace lower {    class Program {       static void Main(string[] args) {          Array arr = Array.CreateInstance(typeof(String), 3);          arr.SetValue("Car", 0);          arr.SetValue("Truck", 1);          arr.SetValue("Motorbike", 2);          Console.WriteLine("Lower Bound {0}",arr.GetLowerBound(0).ToString());          Console.ReadLine();       }    } }OutputLower Bound 0

The GetLongLength method in C# gets a 64-bit integer that represents the number of elements in the specified dimension of the Array.First, set the array.long[,] arr2= new long[15, 35];For a specified dimension of the array, set the index in the GetLongMethod() method like −long len2 = arr2.GetLongLength(0);Let us see the complete example.Example Live Demousing System; class Program {    static void Main() {       int[,] arr = new int[20, 30];       int len = arr.GetLength(0);       Console.WriteLine(len);       long[,] arr2= new long[15, 35];       long len2 = arr2.GetLongLength(0);       Console.WriteLine(len2);    } }Output20 15

The GetLength gets a 32-bit integer that represents the number of elements in the specified dimension of the Array.First, set the array.int[,] arr = new int[20, 30];For a specified dimension of the array, set the index in the GetLength() method like −Arr.GetLength(1);Example Live Demousing System; class Program {    static void Main() {       int[,] arr = new int[20, 30];       int len = arr.GetLength(1);       Console.WriteLine(len);    } }Output30

The Directory class in C# is used to manipulate the directory structure. It has methods to create, move, remove directories.The following are some of the methods of the Directory class.Sr.No.Method & Description1CreateDirectory(String)Creates all directories and subdirectories in the specified path2Delete(String)Deletes an empty directory3Exists(String)Whether the given path refers to an existing directory4GetCreationTime(String)Gets the creation date and time of a directory.5GetCurrentDirectory()Gets the current working directory6GetFiles(String)Let us learn about the usage of GetFiles() method in Directory class. It displays all the files in the specified directory.Exampleusing System; using System.IO; class Program {    static void Main() {       // Get all ... Read More