Drag and drop server validation in multiselect

[4712635]

I'm using drag/drop(insert mode) in two multiselect, I want to have a server-side validation when user drag and drop item from one multiselect to another.
For example, the first multiselect named Multiselect1 have two items: "Item1","Item2". The first item is permitted to drag to multiselect and the second item is not permitted.
I found that the multiselect listener have a property named beforedrop, I have tried to write a directmethod to call the server-side code, but I got a stack overflow.

Is there any other method to solve my problem?

Thanks!

[Daniil]

Hi,

Drag&drop operations should be made client side, I can't see any way to achieve your requirement.

You could validate MultiSelect values on submit.

[4712635]

Hi,

Drag&drop operations should be made client side, I can't see any way to achieve your requirement.

You could validate MultiSelect values on submit.

thanks, and is there any client side drag&drop validation?

[Daniil]

Well, could you clarify what do you mean under "client side drag&drop validation"?