private async void ConvertToText()
{
VisualStateManager.GoToElementState(GridMain, "TextShown", false);
TextConverter converter = new TextConverter(CreateOptions());
try
{
Progress <double> progress = new Progress <double>(UpdateProgress);
TbAscii.Text = await converter.ConvertAsync(_source, progress);
}
catch (Exception e)
{
MessageBox.Show(e.Message, "Operation failed!");
}
}