How do I access object held inside of dataobject?

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Involves using Gong DragDrop WPF NuGet.

Setup:

1. A PreviewDrop event that handles a ListBox.
2. A DataObject variable.
3. Assign e.Data to DataObject variable
4. Drag and Drop object from any place to this ListBox in order to trigger.

What I need to get:

The Content of the ListBoxItem or the Header of the TreeViewItem that was dragged into it (Gong lets you do this) OR the whole object that was dropped in my ListBox.

I can physically see that this DataObject contains this object in its Non-Public Members -> InnerData -> Non-Public Members -> Data -> Raw View -> Values -> Results View -> (0) -> (0) -> Data but I do not know how to access it.

What I have tried:

Googled overflow and codeproject, VB.Net documentation, found nothing specific on the issue (or maybe it was too vague).

Posted 2-Jan-22 14:13pm

Steve Krozer

Updated 3-Jan-22 3:43am

v2

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Steve Krozer · Accepted Answer · 2022-01-03T03:43:00

The solution is much simpler than I thought.

You need to get the DataObject.GetFormats to know what you are working with, copy the string that GetFormats returns, something like this:

Dim myElement = myData.GetFormats

Pass that string to GetData like this:

Dim myInnerData = myData.GetData("GongSolutions.Wpf.DragDrop")

And voila, you just got the object of the DragEventArgs.

As far as I know this is the only topic that has an answer regarding this specific problem.