WinForm: Drag & Drop is blocked

[SaGeek]

I have a Winform with a DevExpress.ExtraGrid and a User Control of .Net. that contains a Grid as well.
When I try to Drag & Drop from the Grid onto the UserControl, once the mouse is on the UserControl I see a Blocked Icon (black circle with line over it) like it's disabled or something.
I made sure the 'AllowDrop' property is true in both grids. It seems I can't in any case catch the event of MouseUp once I reached the UserControl and start seeing the blocked Icon.
Any idea why? Will appreciate any help!

[Frinavale]

There should be a DragEnter Event that you can handle and specify the "Effect" that is used.

This way you can check the type of the thing being dragged onto the page and if it is allowed you can set the DragDropEffects to All, or if it is not allowed you can set it to None (which is what you are seeing right now)

-Frinny

[Kara Hewett]

You can handle the PreviewMouseUp event to catch the moment when the user clicks on a column header:

[C#]

private void view_PreviewMouseUp(object sender, System.Windows.Input.MouseButtonEventArgs e) {
    TableViewHitInfo info = view.CalcHitInfo((DependencyObject)e.OriginalSource);
    if (info.InColumnHeader) {
        MessageBox.Show(info.Column.FieldName);
    }
}

1
solution
MouseUp event not firing.
Tags:
.NET, WPF, DXGrid for WPF 0
Victoryking
3 years ago MouseUp event is not firing. we need this for sorting. I read from other post that this is by design and we should use GridControl.CustomColumnSort Event. Our Application architecture is different. A legacy delphi component does sorting of the records. so, I need a proper event to call the sorting methods and re-bind the new data? Also, I need to AllowMove for columns.


any comments?
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Dmitry (DevExpress Support)
3 years ago >>Also, I need to AllowMove for columns.
I'm afraid that your requirements are not clear to me. We kindly ask you to create a new ticket regarding this second problem in order not to mix discussions devoted to different subjects in one ticket and avoid misunderstanding. Please describe the problem that you have encountered and the task you wish to implement in greater detail and we will do our best to find an appropriate solution.
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Dmitry (DevExpress Support)
3 years ago You can handle the PreviewMouseUp event to catch the moment when the user clicks on a column header:
[C#]Open in popup window

private void view_PreviewMouseUp(object sender, System.Windows.Input.MouseButtonEventArgs e) {
    TableViewHitInfo info = view.CalcHitInfo((DependencyObject)e.OriginalSource);
    if (info.InColumnHeader) {
        MessageBox.Show(info.Column.FieldName);
    }
}

This event is raised before the MouseUp and can be handled at the TableView's level.