1 Answer, 1 is accepted
Hello, Alain,
The following help article demonstrates a sample approach how to achieve drag and drop behavior between two RadTreeView controls:
However, note that the two controls should be somehow visible in order to start dragging from the source control and drop to the target control. It may be required to switch the selected page while the dragging operation is being executed.
I hope this information helps. If you need any further assistance please don't hesitate to contact me.
Regards,
Dess | Tech Support Engineer, Principal
Progress Telerik
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Rank 1
Thank you Dess
But that's my main problem, how to get the hovered dragged page tab to be selected?
How do I access the tab control itself? So I could be setting the dragover event handler
This way the other control gets visible and the rest is easy...
Thank you
In the TreeViewElement.DragDropService.PreviewDragOver event you have access to the HitTarget. Hence, when you drag over a RadPageViewStripItem, you can set the RadPageView.SelectedPage to the respective page:
public RadForm1()
{
InitializeComponent();
this.radTreeView1.AllowDragDrop = true;
RadPageViewStripElement stripElement = this.radPageView1.ViewElement as RadPageViewStripElement;
foreach (RadPageViewStripItem item in stripElement.Items)
{
item.AllowDrop = true;
}
this.radTreeView1.TreeViewElement.DragDropService.PreviewDragOver += DragDropService_PreviewDragOver;
}
private void DragDropService_PreviewDragOver(object sender, RadDragOverEventArgs e)
{
Console.WriteLine(e.HitTarget);
RadPageViewStripItem stripItem = e.HitTarget as RadPageViewStripItem;
if (stripItem != null)
{
e.CanDrop = true;
this.radPageView1.SelectedPage.Visible = true;
this.radPageView1.SelectedPage = stripItem.Page;
}
}