Net Framework 4 and lower use 32-bit pointers, and.
#Istream net windows#
If it's relevant, I'm using Visual Studio 2017 Professional, and running on Windows 10, although the Drag and Drop not working has also been reported by clients running Windows 7. The only other thing is the form itself, which is just a blank Winforms form, with the following Properties set:.
#Istream net code#
(Ok, seems that code was too long for one post, the OutlookDataObject class will be in a reply below). MessageBox.Show("Error : " + ex.ToString()) MessageBox.Show("Output to " + filename) save the file stream using its name to the application pathįileStream outputStream = File.Create(filename) use the fileindex to get the name and data stream MemoryStream filestreams = (MemoryStream)dataObject.GetData("FileContents") įor (int fileIndex = 0 fileIndex < filenames.Length fileIndex++) String filenames = (string)dataObject.GetData("FileGroupDescriptor") get the names and data streams of the files dropped OutlookDataObject dataObject = new OutlookDataObject(e.Data) wrap standard IDataObject in OutlookDataObject Private void Form1_DragDrop(object sender, DragEventArgs e)
or this tells us if it is an Outlook attachment dropĮlse if (e.Data.GetDataPresent("FileGroupDescriptor")) If (e.Data.GetDataPresent(DataFormats.FileDrop)) Private void Form1_DragEnter(object sender, DragEventArgs e) Public partial class OutlookDragNDropTest : Form Net Framework 4.5 or later (tested all the same versions again). Net Framework 4, whether you drag and drop a file or an email from Outlook, but neither works under. Net 4.5 or later.īelow is the complete code for a test form I did, using code I dug up from here and elsewhere. I've been trawling around for a couple of days trying out all the Drag and Drop code I could find, and none of it seems to work under. NET 4.5 or later, the last line above returns null.
NET 4, the last line above returns the filename(s) as expected.
Var filenames = (string) dataObject.GetData("FileGroupDescriptor") Var dataObject = new OutlookDataObject(e.Data) public string ImportEmail(DragEventArgs e) The code is quite convoluted, it does a ton of stuff unrelated to the issue to determine where the file goes, and who it shows up for etc, so I won't include all that, but the point at which it breaks is nice and simple. This however prevents the Drag and Drop from Outlook working. Net Framework 4, however some new features I've been working on require. The code has been running perfectly when compiled with the Target Framework set to. I have some code that's been in use for about 12 years now, which includes the ability to drag and drop items, including emails from Outlook. Does anyone have any C# code to accept Drag and Drop from Outlook to a Winforms application that works under.
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