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;
using System.Threading;

namespace ThreadTest
{
    public partial class Form1 : Form
    {
        private String _text = String.Empty;

        public Form1()
        {
            this.InitializeComponent();
            this.pictureBox1.LoadCompleted += new AsyncCompletedEventHandler(pictureBox1_LoadCompleted);
            this.pictureBox1.LoadAsync("http://www.baidu.com/img/shouye_b5486898c692066bd2cbaeda86d74448.gif");
        }

        void pictureBox1_LoadCompleted(object sender, AsyncCompletedEventArgs e)
        {
            PictureBox pictureBox = sender as PictureBox;
            MessageBox.Show(pictureBox.ImageLocation);
            MessageBox.Show(pictureBox.Image.Width.ToString());
        }
    }
}