use imagelist > choose images to add images click ok
set image size 200X200
Next button code with loading form is
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
namespace EgApp
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
private void Form1_Load(object sender, EventArgs e)
{
Img_idx = 0;
pictureBox1.Image = imageList1.Images[Img_idx];
}
static int Img_idx;
private void button2_Click(object sender, EventArgs e)
{
if (Img_idx < imageList1.Images.Count)
{
pictureBox1.Image = imageList1.Images[++Img_idx];
}
}
}
}