Infralution Support

[MHB]

How do I use modifier keys when doing drag and drop operations (shift, ctrl, alt)?
I'm using OnRowDrop() to do the dropping, but how do I change the dropeffect according to modifier keys? I've tried RowDropEffect(), but I can't find out how to obtain the keys from there, since GetRowDropEffectEventArgs inherits from EventArgs and not Windows.Forms.DragEventArgs.

[Infralution]

Override the RowDropEffect method and set the drop effect as follows:

if (Control.ModifierKeys == Keys.Control)
return DragDropEffects.Copy;
else
return DragDropEffects.Move;
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Infralution Support

[MHB]

Ah, thanks! I did override the RowDropEffect, but I'm new to windows forms, and didn't guess what 'Control' is - I think this is hinted to somewhere in the help pages. Perhaps a full qualification of the element would help? Ie. System.Windows.Forms.Control.ModifierKeys.

You could also make it a bit easier for users by letting the default RowDropEffect set the effect according to modifierkeys, following the standard (ctrl = copy, alt = link, shift or none = move). But that's just a userfriendly expansion option