mygrid.attachEvent("onKeyPress",onKeyPressed);
    ...
function onKeyPressed(code,ctrl,shift){
        
    if(code==67&&ctrl){
        mygrid.CopySelectionToClipboard()
    }
        
    if(code==86&&ctrl){
        mygrid.PasteSelectionFromClipboard()
    }
        
    return true;
}