如何保存网页为图片 [英] How to save a web page as image

问题描述

我有网页源字符串;
我怎么可以将其保存在字节[]作为图像

i have a string with webpage source; how can i save it in byte[] as image?

推荐答案

下面：？的 http://pietschsoft.com/post/2008/07/C-Generate-好康-Thumbmail-截图-Image.aspx

是如何使用WebBrowser.DrawToBitmap方法的例子。

Is an example of how to use the WebBrowser.DrawToBitmap method.

您已经生成您的位图后，您可以使用任何你想要的编码进行压缩结果
这是从MSDN如何压缩为PNG（无损，小）一个例子：< BR>
如何：编码和解码PNG图片

After you've generated your bitmap, you can compress it using any encoding you want.
This is an example from MSDN for how to compress to PNG (lossless and small):
How to: Encode and Decode a PNG Image

祝你好运：）

编辑：结果
。为了得到字节数组，你可能想使用一个内存流的输出流

In order to get the byte array, you might want to use a memory stream as output stream.

下面是如何这样的事情会工作的工作例如：

Here's a working example of how something like that would work:

public static void Main(string[] args)
{
    byte[] test = new byte[] { 2, 5, 6, 1, 9 };
    MemoryStream ms = new MemoryStream();
    ms.Write(test, 0, 5);

    byte[] image = new byte[ms.Length];
    Buffer.BlockCopy(ms.GetBuffer(), 0, image, 0, (int)ms.Length);
    for (int i = 0; i < ms.Length; i++)
        Console.WriteLine(image[i]);
    Console.ReadKey();
}

和这里有一个如何它会在你的情况下，工作的范例：

And here's an example of how it'd work in your case:

public static void Main(string[] args)
{
    MemoryStream ms = new MemoryStream();
    // You have a PNGBitmapEncoder, and you call this:
    encoder.Save(ms);

    byte[] image = new byte[ms.Length];
    Buffer.BlockCopy(ms.GetBuffer(), 0, image, 0, (int)ms.Length);
    for (int i = 0; i < ms.Length; i++)
        Console.WriteLine(image[i]);
    Console.ReadKey();
}

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