从WIA ImageFile加载图片框? [英] Load a picturebox from a WIA ImageFile?

问题描述

我已经从一位同事那里接手了一个设计不佳的项目，并希望直接从WIA命令直接加载一个图片框，而该命令刚刚完成，可以从连接的USB相机拍摄图片.

I've taken over a poorly designed project from a co-worker and am looking to load a picture box directly from the WIA command that just completed to take a picture from an attached USB camera.

当前实现会等到文件已写入磁盘，然后从那里显示它 从磁盘重新读取文件.

The current implementation waits until the file has been written to disk, then displays it from there probably re-reading the file from disk.

Item item = d.ExecuteCommand(WIA.CommandID.wiaCommandTakePicture);

WIA.ImageFile imagefile = item.Transfer(FormatID.wiaFormatJPEG) as WIA.ImageFile;

我尝试将图像投射到给定的图片框上

I tried casting an Image to the given picture box without success

picBox.Image = (Image)imageFile;

推荐答案

WIA.ImageFile是COM对象包装，而不是System.Drawing.Image.

WIA.ImageFile is a COM object wrapper, not a System.Drawing.Image.

您将不得不使用带有临时文件的WIA.ImageFile Save方法，或者尝试如下所示的内存中解决方案: http://www.pcreview.co.uk /forums/wia-imagefile-system-drawing-image-t2321026.html

You'll have to mess with WIA.ImageFile Save method with temporary files or try in-memory solution as shown here: http://www.pcreview.co.uk/forums/wia-imagefile-system-drawing-image-t2321026.html

var imageBytes = (byte[])image.FileData.get_BinaryData(); 
var ms = new MemoryStream(imageBytes);
var img = Image.FromStream(ms);

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