ARRAY INSERTION

Question

We have an array in which we have some elements
we wish that user insert a value at a specified position in the array....
how is this done

Vulpes · Accepted Answer

Here's how you can insert an element on a "one off" basis into an array:
using System;
class Program {    static void Main()    {       string[] sa = {"a", "b", "c", "e", "f"};
// suppose you want to insert "d" at index 3                int index = 3;       string insertion = "d";       Array.Resize(ref sa, sa.Length + 1); // increase size by 1                   // move elements from 'index' onwards 1 element to right       for(int i = sa.Length - 1; i >= index + 1; i--)       {          sa[i] = sa[i - 1];       }
// insert new element       sa[index] = insertion;
// check it worked       foreach(string s in sa) Console.Write("{0} ", s);       Console.ReadKey();      } }
The output is:
a b c d e f
As the others have said, if you intend to do a lot of insertions, you're best using a List , LinkedList or ArrayList instead of an array.

Vulpes · Answer

This can also be done using LINQ:
using System; using System.Linq;
class Program {    static void Main()    {       string[] sa = {"a", "b", "c", "e", "f"};
// suppose you want to insert "d" at index 3                int index = 3;       string[] insertion = new string[]{"d"};       var temp = sa.Take(index).Concat(insertion);       sa = temp.Concat(sa.Skip(index)).ToArray();
// check it worked       foreach(string s in sa) Console.Write("{0} ", s);       Console.ReadKey();      } }

Abhijit Patil · Answer

hey vipin ,
you can use arraylist
Indices are zero based. So the first item is at index 0 and the tenth item at index 9
ArrayList.Insert
int posNum ; if (! int . TryParse ( txtPosition . Text , out posNum )) { // show message return ; } else if ( posNum 0 || posNum > ActorArrayList . Count ) { // show message return ; } ActorArrayList . Insert ( posNum , actName );
}
If you want to add the object at the end anyway, you just have to use  Add : ActorArrayList . Add ( actName );
h ope it helps

Abhay Shanker · Answer

Please check below link
http://stackoverflow.com/questions/9570944/adding-elements-to-a-c-sharp-array
But why are you not using arraylist