Csharp/CSharp Tutorial/Data Structure/Array CreateInstance

Create Array With Bounds

<source lang="csharp">using System;

   public  class MainClass 
   {
       static void Main()
       {
           int[] lengthsArray = new int[2] { 3, 5 };
           int[] boundsArray = new int[2] { 2, 3 };
           Array multiDimensionalArray = Array.CreateInstance(typeof(String), lengthsArray, boundsArray);
           for  (int i = 0; i < multiDimensionalArray.Rank; i++)
               Console.WriteLine("{0}:\t{1}\t{2}", i,multiDimensionalArray.GetLowerBound(i),multiDimensionalArray.GetUpperBound(i));
       }
   }</source>

Dynamic array creation

<source lang="csharp">using System; using System.Collections; using System.Collections.Generic; using System.Collections.ObjectModel; using System.Text;

public class MainClass {

   public static void Main()
   {
       string[] myArray = (string[])Array.CreateInstance(typeof(string), 15);
       Console.WriteLine(myArray.GetType());
       Console.WriteLine(myArray.GetLength(0));
       Console.WriteLine(myArray.GetLowerBound(0));
       myArray.SetValue("Hello, array", 5);
       Console.WriteLine(myArray.GetValue(5));
   }

}</source>

System.String[]
15
0
Hello, array

Use Array.CreateInstance to create array instance

<source lang="csharp">using System; public class MainClass {

 public static void Main() {
   // Create and initialize a new Array instance.
   Array strArr = Array.CreateInstance( typeof(String), 3 );
   strArr.SetValue( "M", 0 );
   strArr.SetValue( "C", 1 );
   strArr.SetValue( "T", 2 );
       
   // Display the values of the Array.
   Console.WriteLine( "Initial Array values:" );
   for ( int i = strArr.GetLowerBound(0); i <= strArr.GetUpperBound(0); i++ )
     Console.WriteLine( strArr.GetValue( i ) );
 }

}</source>

Initial Array values:
M
C
T