Insert item to ArrayList by index : ArrayList : Data Structure C# Examples

Insert item to ArrayList by index

    
using  System;
using  System.Collections;
using  System.Collections.Specialized;

class  MyClass{
      public  string  MyName="";      
}

class  MainClass
{
    static  void  Main(string[]  args)
    {
        ArrayList  classList  =  new  ArrayList();
        classList.AddRange(new  MyClass[]  {  new  MyClass(),  
                                                                                      new  MyClass(),  
                                                                                      new  MyClass()});
        Console.WriteLine("Items  in  List:  {0}",  classList.Count);

        classList.Insert(2,  new  MyClass());
        Console.WriteLine("Items  in  classList:  {0}",  classList.Count);

        //  Print  out  current  values.  
        foreach(MyClass  c  in  classList)
        {
            Console.WriteLine("MyClass  name:  {0}",  c.MyName);    
        }
    }
}
    
   
  
   

Items in List: 3
Items in classList: 4
MyClass name:
MyClass name:
MyClass name:
MyClass name:

Related in same category :
• Get the number of elements
• Remove elements from ArrayList
• Capacity and element count
• Change contents using array indexing
• Sort and search an ArrayList
• Use enumerator to access list
• Re-enumerate the list
• Make an ArrayList Synchronized
• Insert and remove at specific index
• Clear an ArrayList
• Create a string array and use the ICollection.CopyTo method to copy the contents of the ArrayList
• Use ArrayList.ToArray to create an object array from the contents of the collection
• Box ints into ArrayList
• ArrayList
• Use ArrayList copy constructor
• IsFixedSize and IsReadOnly properties
• Insert(), AddRange(), and InsertRange() methods
• Use the SetRange() method to copy the elements from anotherStringArray to myArrayList, starting at index 0
• Use the Contains() method to determine if the string 'text' is in the ArrayList
• Use the IndexOf() and LastIndexOf() methods to display the first and last occurrence
• Remove element 0, first 'text' element, and two elements starting at index 3
• Use the Reverse() method to reverse myArrayList
• Using the TrimToSize() method to reduce the capacity of ArrayList
• Using the GetRange() method to get two elements from myArrayList, starting at index 1
• Get an enumerator using the GetEnumerator() method and use it to read the elements in ArrayList
• Use the Reset() method and access the first row again using MoveNext()