private void button1_Click(object sender, EventArgs e) { try { double[] newParams = { Double.Parse(xOff.Text), Double.Parse(yOff.Text), Double.Parse(zOff.Text), Double.Parse(xScale.Text), Double.Parse(yScale.Text), Double.Parse(zScale.Text), Double.Parse(gyroXOff.Text), Double.Parse(gyroYOff.Text), Double.Parse(gyroZOff.Text) }; paramHandler.setParams(newParams); paramHandler.saveDocument(); } catch (Exception) { MessageBox.Show("Please fill the textfield with numbers only. Decimal separator is Comma"); } }