Drag and drop grid columns to a custom control? | Infragistics Forums

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Drag and drop grid columns to a custom control?

Maxim posted over 15 years ago

I need to make a control that will be more or less similar to the WinGrid's GroupBy area, with the only difference that I need to handle the selected columns in my own way.
That is, a user will drag and drop columns from a grid (or a column chooser, if possible) and then some custom business logic will happen for the selected columns, like filtering or grouping (but not the usual WinGrid grouping).
Correct me if I'm wrong, but it seems that when I drag a column from the WinGrid it doesn't start the "real" drag-and-drop process, it only emulates drag-and-drop behavior and that column header can only be dropped on a column chooser or a group-by area... So how can I make a desired control then?
Or maybe can you recommend a similar control from the Infrgistics library? Like a custom drop area for grid columns?

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Thanks.

Maksim

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Offline Mike Saltzman posted over 15 years ago

yacoder said:
it seems that when I drag a column from the WinGrid it doesn't start the "real" drag-and-drop process, it only emulates drag-and-drop behavior

You are correct.
What you would have to do is turn off the grid's built-in column dragging behavior and implement your own.
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Maxim posted over 15 years ago in reply to Mike Saltzman

Mike, is there any example on that? I couldn't find any possibility to do this on my own, and we've decided to implement our custom "kind of" column chooser, that is able to drag-and-drop. But it's also inconvinient, as Infragistics grid and column chooser do not really give us any way to override the standard behavior, so we'll have to hack around that somehow...
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Offline Mike Saltzman posted over 15 years ago in reply to Maxim

No, I don't know of any samples of this. You are right, though. This will not be an easy or trivial task. The drag and drop functionality in the grid is all or nothing. You can turn it off by setting AllowColMoving, but then if you still want to let the user move columns around, you would have to re-implement that functionality in addition to the drag and drop into your custom column chooser.
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