C# | Copy the elements of collection over a range of elements in ArrayList (original) (raw)

Last Updated : 28 Aug, 2019

ArrayList.SetRange(Int32, ICollection) Method is used to copy the elements of a collection over a range of elements in the ArrayList. Syntax:

public virtual void SetRange (int index, System.Collections.ICollection c);

Parameters:

index: It is a zero-based ArrayList index at which to start copying the elements of c. The type of this parameter is System.Int32. c: It is an ICollection whose elements to copy to the ArrayList. The collection itself cannot be null, but it can contain elements that are null.

Exceptions:

Below given are some examples to understand the implementation in a better way: Example 1:

CSharp `

// C# Program to illustrate the // SetRange() Method using System; using System.Collections;

class GFG {

// Main method
public static void Main()
{
    
    // Create and initialize ArrayList
    ArrayList mylist = new ArrayList();
    mylist.Add("G");
    mylist.Add("e");
    mylist.Add("e");
    mylist.Add("k");
    mylist.Add("s");
    mylist.Add("G");
    mylist.Add("F");
    mylist.Add("G");

    // There are total 4 elements
    string[] str = { "This", "is", "C#", "Tutorial" };
    
    // using SetRange() Method
    // starting from index 0
    mylist.SetRange(0, str);

    Show("ArrayList is", mylist);
}

// show method to display the result
static void Show(string arr, ArrayList mylist)
{
    for (int j = 0; j < mylist.Count; j++) {
        
        Console.WriteLine(arr + "[" + j + "] = " + mylist[j]);
    }
}

}

`

Output:

ArrayList is[0] = This ArrayList is[1] = is ArrayList is[2] = C# ArrayList is[3] = Tutorial ArrayList is[4] = s ArrayList is[5] = G ArrayList is[6] = F ArrayList is[7] = G

Example 2:

CSharp `

// C# Program to illustrate the // SetRange() Method using System; using System.Collections;

class GFG { // Main method public static void Main() { // Create and initialize ArrayList ArrayList mylist1 = new ArrayList(); mylist1.Add("Hello "); mylist1.Add("Welcome "); mylist1.Add("to "); mylist1.Add("online "); mylist1.Add("portal "); mylist1.Add("of "); mylist1.Add("Geeks "); mylist1.Add("for "); mylist1.Add("Geeks ");

    // Create and initialize new ArrayList
    ArrayList mylist2 = new ArrayList();
    mylist2.Add("This ");
    mylist2.Add("is ");
    mylist2.Add("C# ");
    mylist2.Add("tutorial");
    mylist2.Add(".");

    // Displays the values of 6 
    // elements of mylist1 starting
    // at index 0.
    ArrayList result = mylist1.GetRange(0, 6);
    
    Console.WriteLine("String from index number 0 to 6:");
    {
        foreach(Object obj in result)
            Console.Write("{0}", obj);
        Console.WriteLine();
    }

    // Replace the value of 5 element
    // starting from index 1
    // with the values in mylist2
    mylist1.SetRange(1, mylist2);

    // Display the result
    result = mylist1.GetRange(0, 6);
    Console.WriteLine("After SetRange() Method:");
    {
        foreach(Object obj in result)
            Console.Write("{0}", obj);
        Console.WriteLine();
    }
}

}

`

Output:

String from index number 0 to 6: Hello Welcome to online portal of After SetRange() Method: Hello This is C# tutorial.

Reference: