How to use Arraylist in C# Using Asp.Net

Arraylist in C# Using Asp.Net 

ArrayList is the one of the easiest and flexible  data structure in the c# . Arraylist size is dynamically increased if user required . user create various datatypes int,string etc by arraylist.

ArrayList arrlist = new ArrayList();

ArrayList property is having many types Capacity,Count,Clear,Contrains,IndexOf,Remove,Sort,Reverse,Insert,Range etc...

Code:

        ArrayList lia = new ArrayList();

        lia.Add("Dotnet");

        lia.Add("Drizzles");

        lia.Add("blogspot.in");

        Response.Write("Result Is == "+ lia.IndexOf("Dotnet"));

Check Indexof from arraylist  condition true  Index Position 0

Code:

ArrayList lia = new ArrayList();

        lia.Add("Dotnet");

        lia.Add("Drizzles");

        lia.Add("blogspot.in");

        Response.Write("Result Is == "+ lia.IndexOf("Dotne"));

Check Indexof from arraylist  condition False  Index Position -1

Code:

        ArrayList lia = new ArrayList();

        lia.Add("Dotnet");

        lia.Add("Drizzles");

        lia.Add("blogspot.in");

        Response.Write("Result Is == "+ lia.Count);

 Arraylist  Count the total values (3)

Code:

ArrayList lia = new ArrayList();

        lia.Add("Dotnet");

        lia.Add("Drizzles");

        lia.Add("blogspot.in");

        Response.Write("Result Is == "+ lia.Contains("Drizzles"));

Check Contains Drizzles from arraylist  Result is True

Code:

ArrayList lia = new ArrayList();

        lia.Add("Dotnet");

        lia.Add("Drizzles");

        lia.Add("blogspot.in");

        Response.Write("Result Is == "+ lia.Contains("Drizz"));

Check Contains Drizz from arraylist  Result is False

Code:

 ArrayList lia = new ArrayList();

        lia.Add("blogspot.in");

        lia.Add("Dotnet");

        lia.Add("Drizzles");

        lia.Sort();

        foreach (string s in lia)

        {

            Response.Write(s.ToString());

        }

Sort the  Arraylist  Result is Ascending order

Code:

 ArrayList lia = new ArrayList();

        lia.Add("blogspot.in");

        lia.Add("Dotnet");

        lia.Add("Drizzles");

        lia.Reverse();

        foreach (string s in lia)

        {

            Response.Write(s.ToString());

        }

Reverse the  Arraylist  Result is Descending order

Code:

ArrayList lia = new ArrayList();

        lia.Add("Dotnet");

        lia.Add("Drizzles");

        lia.Add("blogspot.in");

        lia.RemoveAt(2);

        foreach (string s in lia)

        {

            Response.Write(s.ToString());

        }

Remove the  Arraylist  2 index

Code:

  ArrayList lia = new ArrayList();

        lia.Add("Dotnet");

        lia.Add("Drizzles");

        lia.Add("blogspot.in");

        //GetRange(start index , count)

        ArrayList range = lia.GetRange(1,2);

       

        foreach (string s in range)

        {

            Response.Write(s.ToString());

        }

Get Range From  Arraylist  Range(1,2) - Index start 1, count 2

Code:

ArrayList lia = new ArrayList();

        lia.Add("Dotnet");

        lia.Add("Drizzles");

        lia.Add("blogspot.in");

        lia.Insert(2, ".");

        foreach (string s in lia)

        {

            Response.Write(s.ToString());

        }

Insert to the  Arraylist  in . Insert(2,".") - 2 is index , . is insert value

Code:

 ArrayList lia = new ArrayList();

        lia.Add("Dotnet");

        lia.Add("Drizzles");

        lia.Add("blogspot.in");

       //LastIndexOf(object value,Index,count)

       Response.Write(lia.LastIndexOf("Dotnet", 0, 0) + "<br/>");       

       Response.Write(lia.LastIndexOf("Dotnet",0,1));

      
LastIndexOf search object value,index,count from Arraylist