我正在开发一个类似于 dropbox 的应用程序,并在 WPF 列表视图中显示远程文件.我想将这些元素拖放到 Windows 资源管理器中.我见过这样的代码:
I'm developing an application similar to dropbox and i show the remote files on a WPF listview. I want to drag those elements and drop it into windows explorer. I've seen code like this:
var dataObject = new DataObject(DataFormats.FileDrop, files.ToArray());
dataObject.SetData(DataFormats.StringFormat, dataObject);
DoDragDrop(dataObject, DragDropEffects.Copy);
但正如您可能认为的那样,这些文件还没有在本地系统中,在复制它们之前,我需要连接到服务器,下载并解压缩文件.就像 ftp 客户端一样.
But as you may think, those file are not at the local system yet, before copiying them I need to connect to server, donwload and unzip the files. Like a ftp client does.
我不知道怎么做,但我想知道是否有任何drop"事件或类似的我可以处理.
I dont how to do it but i was wondering if there is any "drop" event or similiar that i can handle.
谢谢!
这段代码:
var virtualFileDataObject = new VirtualFileDataObject(
// BeginInvoke ensures UI operations happen on the right thread
(vfdo) => Dispatcher.BeginInvoke((Action)(() => BusyScreen.Visibility = Visibility.Visible)),
(vfdo) => Dispatcher.BeginInvoke((Action)(() => BusyScreen.Visibility = Visibility.Collapsed)));
// Provide a virtual file (downloaded on demand), its URL, and descriptive text
virtualFileDataObject.SetData(new VirtualFileDataObject.FileDescriptor[]
{
new VirtualFileDataObject.FileDescriptor
{
Name = "DelaysBlog.xml",
StreamContents = stream =>
{
using(var webClient = new WebClient())
{
var data = webClient.DownloadData("http://blogs.msdn.com/delay/rss.xml");
stream.Write(data, 0, data.Length);
}
}
},
});
virtualFileDataObject.SetData(
(short)(DataFormats.GetDataFormat(CFSTR_INETURLA).Id),
Encoding.Default.GetBytes("http://blogs.msdn.com/delay/rss.xml "));
virtualFileDataObject.SetData(
(short)(DataFormats.GetDataFormat(DataFormats.Text).Id),
Encoding.Default.GetBytes("[The RSS feed for Delay's Blog] "));
DoDragDropOrClipboardSetDataObject(e.ChangedButton, TextUrl, virtualFileDataObject, DragDropEffects.Copy);
使用类 linked 应该可以工作..非常好的和简单的解决方案.
Using the class linked should work. . Very nice and easy solution.
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