Disable Drag and Drop for specific rows

[Wolfgang]

Hello,

We have a gridview filled with production steps. These production steps can be reordered. For this we have implemented a behavior like the "Reorder Rows" behavior in your examples.These productions steps have a status field, that describe the step needs to be done or is done. the production steps will have to be processed from top to bottom 

The steps with status done do not need to be dragged and dropped, and the steps with status not done should never be dropped before a step with status done.

Is there a way to disable drag and drop for specific rows or cancel drop on specific rows?

Best regards and thanks for your help

[Martin Ivanov]

Hello Wolfgang,

To achieve your requirement, you can use the DragDropManager.DragInitialize event. In the behavior's event handler, you can set the Data and the DragVisual of the event arguments to null. For example:

private void OnDragInitialize(object sender, DragInitializeEventArgs e) 
{    
    // If the drag should be canceled set the data and the visual to null 
    e.Data = null; 
    e.DragVisual = null; 
} 

I hope this helps.

Regards,
Martin Ivanov
Progress Telerik