如何将 WPF BitmapSource 图像保存到文件? [英] How to save a WPF BitmapSource image to a file?

问题描述

在 WPF 中，System.Windows.Clipboard.getImage() 函数返回一个 BitmapSource 对象.作为来自 WinForms 背景的 WPF 新手，我不清楚如何将此图像保存到文件中.我必须采取哪些步骤?

In WPF, the System.Windows.Clipboard.getImage() function returns a BitmapSource object. As a newbie in WPF coming from a WinForms background, its not clear to me how to save this image to a file. What are the steps I must take?

推荐答案

您需要使用编码器(BitmapEncoder).例如，要将其保存为 PNG 格式，您可以执行以下操作:

You need to use an encoder (subclass of BitmapEncoder). For instance, to save it to the PNG format, you do something like that :

public static void SaveClipboardImageToFile(string filePath)
{
    var image = Clipboard.GetImage();
    using (var fileStream = new FileStream(filePath, FileMode.Create))
    {
        BitmapEncoder encoder = new PngBitmapEncoder();
        encoder.Frames.Add(BitmapFrame.Create(image));
        encoder.Save(fileStream);
    }
}

顺便说一下，请注意有 Clipboard.GetImage 中的一个错误.如果您只是将图像保存到文件中应该没有问题，但是如果您想显示它就会有问题.

By the way, note that there's a bug in Clipboard.GetImage. It shouldn't be a problem if you just save the image to a file, but it will be if you want to display it.

上面提到的错误似乎已在 4.0 中修复

EDIT : the bug mentioned above seems to be fixed in 4.0

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