private void buttonSendFunction_Click(object sender, EventArgs e)
{
this.toolStripStatusLabel.Text = "Result: ... ";
var function = (FunctionCode)this.comboBoxFunctionCode.SelectedValue;
/* TODO
this.master.PerformFunction(function, Enumerable.Empty<Header>(), function.ToString(), callback);
callback.Task.ContinueWith(task =>
this.BeginInvoke(new Action(() =>
this.toolStripStatusLabel.Text += task.Result.ToString()
))
);
* */
}