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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def OnButtonApply(self, event):
 """Updates the preview_textctrl"""


        try:
            dialect, self.has_header = self.csvwidgets.get_dialect()
        except TypeError:
            event.Skip()
            return 0

        self.preview_textctrl.fill(data=self.data, dialect=dialect)

        event.Skip()