最好的方式图像网址到Drawing.Image [英] Best way image url to Drawing.Image

问题描述

将图片从网址加载到Drawing.Image的最佳方式？

Best way to load an image from url to Drawing.Image?

我发现了这两种方式，哪种方式更好还是更好？

I found this two ways, which one is better or is there any better?

PictureBox pb = new PictureBox();
pb.ImageLocation = "http://lovelypackage.com/wp-content/uploads/2012/02/lovely-package-whatever-wine4.jpg";
Image img = pb.Image;

OR

using (WebClient wc = new WebClient())
{
    byte[] bytes = wc.DownloadData("http://lovelypackage.com/wp-content/uploads/2012/02/lovely-package-whatever-wine4.jpg");
    MemoryStream ms = new MemoryStream(bytes);
    Image img = Image.FromStream(ms);
}

推荐答案

如果你不使用在您的应用程序中的PictureBox，我建议第二种方法。我更进一步，使它成为一个方法，采取 url 字符串并返回图像使其可重复使用别处。此外，您可能希望使用 DownloadDataAsync 来避免阻止UI线程，特别是如果图像可能需要花费相当多的时间来下载。

If you're not using the PictureBox in your application, I'd recommend the second approach. I'd go one step further and make it a method that takes a url string and returns the Image making it reusable elsewhere. Also, you might want to use DownloadDataAsync to avoid blocking the UI thread, especially if the image may take a noticeable amount of time to download.

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