从三个 url 加载三个图像并显示在 3 个图片框中

Question

我正在尝试从 3 个 url 中请求 3 个图像，然后尝试在三个中显示 picturebox.But 我的代码有问题。不胜感激！

       private void button1_Click(object sender, EventArgs e)
        {


           var request1 = WebRequest.Create("https://upload.wikimedia.org/wikipedia/commons/thumb/f/f8/Schloss_Neuschwanstein_2013.jpg/300px-Schloss_Neuschwanstein_2013.jpg");
           var request2 = WebRequest.Create("https://upload.wikimedia.org/wikipedia/commons/thumb/f/f8/Schloss_Neuschwanstein_2013.jpg/300px-Schloss_Neuschwanstein_2013.jpg");
          var request3 = WebRequest.Create("https://upload.wikimedia.org/wikipedia/commons/thumb/f/f8/Schloss_Neuschwanstein_2013.jpg/300px-Schloss_Neuschwanstein_2013.jpg");




        using (var response1 = request1.GetResponse())
        using (var response2 = request2.GetResponse())
        using (var response3 = request2.GetResponse())


        using (var stream1 = response1.GetResponseStream())
        using (var stream2 = response2.GetResponseStream())
        using (var stream3 = response2.GetResponseStream())


        {
            pictureBox1.Image = Bitmap.FromStream(stream1);
            pictureBox2.Image = Bitmap.FromStream(stream2);
            pictureBox3.Image = Bitmap.FromStream(stream3);

          }

      }

   }
 }

Answer 1

你可以试试这个。

    private void button1_Click(object sender, EventArgs e)
    {
        pictureBox1.Load("http://i.imgur.com/ZkWyBo5.jpg?2");
        pictureBox2.Load("http://i.imgur.com/ZkWyBo5.jpg?2");
        pictureBox3.Load("http://i.imgur.com/ZkWyBo5.jpg?2");
    }

由于未正确使用 using 语句，您的代码已挂起。请记住，在 using 语句中有一个范围。

如果您想使用您的代码：

        private void button1_Click(object sender, EventArgs e)
    {

        var request1 = WebRequest.Create("http://i.imgur.com/ZkWyBo5.jpg?2");
        var request2 = WebRequest.Create("http://i.imgur.com/ZkWyBo5.jpg?2");
        var request3 = WebRequest.Create("http://i.imgur.com/ZkWyBo5.jpg?2");

        using (var response1 = request1.GetResponse())
        {
            using (var stream1 = response1.GetResponseStream())
            {
                pictureBox1.Image = Bitmap.FromStream(stream1);
            }
        }
        using (var response2 = request2.GetResponse())
        {
            using (var stream2 = response2.GetResponseStream())
            {
                pictureBox2.Image = Bitmap.FromStream(stream2);
            }
        }
        using (var response3 = request3.GetResponse())
        {
            using (var stream3 = response3.GetResponseStream())
            {
                pictureBox3.Image = Bitmap.FromStream(stream3);
            }
        }
    }

从三个 url 加载三个图像并显示在 3 个图片框中

Three Imges load from three url and show in 3 picturebox

c#

url

image

picturebox