private void buttonShowGraph_Click(object sender, System.EventArgs e)
{
double[] data1 = this.wave.GetData((Channel)this.comboChannel1.SelectedIndex, (Property)this.comboType.SelectedIndex);
double[] data2 = this.wave.GetData((Channel)this.comboChannel2.SelectedIndex, (Property)this.comboType.SelectedIndex);
if(data2 == null)
this.ShowSingleGraph(data1);
else if(this.checkOneGraph.Checked)
this.ShowSingleGraph(data1, data2);
else
this.ShowTwinGraph(data1, data2);
}