C# 面试总结

  今天又去参加面试，继续折腾。所以要好好学习，高手是找公司，随便挑，而我呢？好好学，好好学！

   面试官现场出了一题，让写程序，大概是要用委托，要用线程，访问远程网上的一张图片，显示在本地！当时大概写的差不多了，但是不知道如何从网络读取一张图片，简言之，就是不知道用什么类中的什么方法，回来搜索了一下，大概我的实现如下：

    using System;

    using System.Collections.Generic;

    using System.ComponentModel;

    using System.Data;

    using System.Drawing;

    using System.IO;

    using System.Linq;

    using System.Net;

    using System.Text;

    using System.Threading;

    using System.Threading.Tasks;

    using System.Windows.Forms;

    namespace 面试题

   {    

            public partial class Form1 : Form

            {

                   public Form1()

                  {

                        InitializeComponent();

                   }

                   delegate void delGetImage(Stream imagebyte);

                  delGetImage delgetimage;

                  Stream imagestream = null;

                  private void button1_Click(object sender, EventArgs e)

                 {

                        Thread thread1 = new Thread(new ThreadStart(getImage));

                        thread1.Start();

                 }

                public void getImage()

                {

                        imagestream = GetImageStream();

                        if (imagestream != null)

                       {

                              delgetimage += new delGetImage(ImageShow);

                       }

                      delgetimage(imagestream);

                  }

         /// <summary>

         /// 获得图片

        /// </summary>

        /// <returns></returns>

        public Stream GetImageStream()

        {

               HttpWebRequest request = (HttpWebRequest)WebRequest.Create("http://image6.tuku.cn/pic/gongyishuhua/katongdongwu/008.jpg");

             request.Method = "GET";

            request.Proxy = null;

            request.AllowAutoRedirect = false;

            HttpWebResponse response = null;

            response = (HttpWebResponse)request.GetResponse();

            Stream stream = response.GetResponseStream();

            return stream;         }

        public void ImageShow(Stream imagestream)

        {           

                Image img = Image.FromStream(imagestream,true);//如果在这一步显示参数不对，则说明获得的流有问题，

               pictureBox1.Image = img;

          }

    }

}