Best way to prevent the collection of updated?

I have a problem/question about the dataGrid control, see code attatched.

When I click on a line in the lower grid I want to copy the information in the upper grid. I don't want the collection of grids below to be updated when I edit the cells in the upper grid.

If I use the code attatched and edit a cell, the collection in the grid below to update when I scroll up and down lines (in the lower rack).

The only way I can stop this update is to set the dataProvider "[{colA: dataGrid1.selectedItem.colA, colB: dataGrid1.selectedItem.colB, teachers: dataGrid1.selectedItem.colC}]" instead of "dataGrid1.selectedItem".

Is this a bug or what I am doing wrong? It should be a better way to prevent the updated collection. I tried different events at the same time check if/when the collection is updated but no success here. I can't get the function 'preventDefault()' to work.

Any solution/suggestion?

Kind regards

the Sweden newbe...

You need two independent dataProviders, one for each grid. then you need to do a * copy * of the row of data before put you in the second dataProvider. This is because that just assign the object (selectedItem) will be just a reference to the same object.

You could use ObjectUtils.copyObject (), or simply create a new Object() and assign the properties and the values for the new object, and then to the second dataProvider addItem().

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