List Add

13y1.7kVisual Basic .NET

Add places an element at the end of a List.

Above statement is given in the following website. What is meant by "end of a List"? Problem is highlighted.
http://www.dotnetperls.com/list-add

5 Replies

Know the answer? Post it — somebody with the same question will find it here.

13y ago
Thank you for your help.
0
Vulpes13y ago
Try this:

using System;
using System.Collections.Generic;

class Program
{
static void Main()
{
// Add three objects to a List.
List list = new List();

list.Add(new Test(1, 2));
list.Add(new Test(3, 4));
list.Add(new Test(5, 6));

foreach(Test t in list)
{
Console.WriteLine("a = {0} b = {1}", t.getNumberA(), t.getNumberB());
}

Console.ReadKey();

}

class Test
{
int a;
int b;

public Test(int a, int b)
{
this.a = a;
this.b = b;
}

public int getNumberA()
{
return a;
}

public int getNumberB()
{
return b;
}
}
}
0
13y ago
This incomplete program is given in the above website. How can it be completed to give following result?

a = 1 b = 2
a = 3 b = 4
a = 5 b = 6

using System;
using System.Collections.Generic;

class Program
{
static void Main()
{
// Add three objects to a List.
List list = new List();

list.Add(new Test(1, 2));
list.Add(new Test(3, 4));
list.Add(new Test(5, 6));

Console.WriteLine("a = {0} b = {1}", list.getNumberA(), list.getNumberB());

}

class Test
{
int a;
int b;

public Test(int a, int b)
{
this.a = a;
this.b = b;
}
public int getNumberA()
{
return a;
}
public int getNumberB()
{
return b;
}
}
}
0
13y ago
Thank you for your explanation.
0
Vulpes13y ago
It means that if the list already contains 'n' elements, then the new element will be the 'n+1'th element.

As well as adding elements to a List, you can also insert them at a particular index.
0