将链接内的图像从 IE 拖放到 C#
我正在尝试获取图像文件（src 属性）的链接，我将其从浏览器拖放到桌面应用程序上。图像位于锚点（a-标签）内。
我的代码适用于 Chrome & Fx - 但不适用于 IE :(
if (e.Data.GetDataPresent("HTML Format"))
{
string data = (string)e.Data.GetData(DataFormats.Html);
看来资源管理器没有任何“HTML 格式”数据发送到 drg'n'drop 机制，或者我做错了。
有没有办法从 IE 获取图像 src？
<强>更新 我发现，如果我选择其中包含图像的链接（“选择”），IE 将发送 HTML 格式。 Fx 和 Chrome 在拖动时会自动执行选择操作。
I'm trying to get link to image file (src attribute) which I drag'n'drop from browser onto my desktop application. Image located inside an anchor (a-tag).
My code works with Chrome & Fx - but not with IE :(
if (e.Data.GetDataPresent("HTML Format"))
{
string data = (string)e.Data.GetData(DataFormats.Html);
It seems like Explorer don't have any "HTML Format" Data sent to drg'n'drop mechanism, or I doing it wrong.
is there a way to get the image src from IE?
UPDATE
I see, that if I select the link ("selection") with Image inside it, IE will send HTML Format. Fx and Chrome do the selection thing automatically upon dragging.
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你有几个问题。
首先，您应该下载 ClipSpy 工具，它将准确地向您显示格式是什么拖/放或复制/粘贴。您会发现图像 SRC url 以 UniformResourceLocatorW 格式存储，并且还有各种其他可用格式，包括指向图像文件的本地副本的 CF_HDROP。
其次，您会发现由于安全限制，在 Vista 和 Windows 7 上的保护模式 IE 中拖放功能无法正常工作。要启用对应用程序的拖放功能，您必须在注册表中列出您的应用程序。
您可以通过创建 DragDrop 策略来注册您的应用程序以接受来自拖放操作的 Web 内容。 DragDrop 策略必须具有与其关联的全局唯一标识符 (GUID)。使用 CreateGuid 为您的策略创建新的 GUID。接下来，将密钥添加到以下位置。
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Internet Explorer\Low Rights\DragDrop
将新项的名称设置为为策略创建的 GUID，然后将以下设置添加到该项。
You have a couple of issues.
First, you should download the ClipSpy tool which will show you exactly what Formats are getting drag/dropped or copy/pasted. You will find that image SRC urls are stored in the UniformResourceLocatorW format, and there are various other formats available as well, including CF_HDROP which points to a local copy of the image file.
Secondly, you will find that the Drag/Drop doesn't work properly from Protected Mode IE on Vista and Windows 7 due to security restrictions. To enable drag/drop to your application, you must list your application in the registry.
You can register your application to accept web content from a drag-and-drop operation by creating a DragDrop policy. DragDrop policies must have a globally unique identifier (GUID) associated with them. Use CreateGuid to create a new GUID for your policy. Next, add a key to the following location.
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Internet Explorer\Low Rights\DragDrop
Set the name of the new key to the GUID created for your policy and then add the following settings to the key.