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View Selected Row (Index)

You can click on the Radio Button to select a specific row.

...
<DataGrid ... selectionMode="multipleRows" ... >
...

function getSelectedIndex() {
  var selectorColumn = gridRoot.getObjectById("selector");
  if ( selectorColumn.getSelectedIndex() == -1)
    return alert("No rows selected.");
    
  alert(selectorColumn.getSelectedIndex());
}

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