'input string not in a correct format' with a null value

Question

I have a form with a button that adds the values of multiple labels(that are filled with currency values) and displays the sum in another label.

decimal[] totals = new decimal[11]; 

    private void calculate_Click(object sender, EventArgs e)
    {
        totals[0] = decimal.Parse(lblText1.Text, NumberStyles.Currency);
        totals[1] = decimal.Parse(lbltext2.Text, NumberStyles.Currency);
        lbltotal.Text = totals.Sum().ToString("C");
    }

Works fine until one is empty and I get 'input string not in a correct format'.

what do you expect? what should be decimal value for ""?

Zdeslav Vojkovic
– Zdeslav Vojkovic

2013-03-13 15:36:02 +00:00
Commented Mar 13, 2013 at 15:36 — Zdeslav Vojkovic
– Zdeslav Vojkovic, Commented Mar 13, 2013 at 15:36

John Arlen · Accepted Answer · 2013-03-13 15:36:00Z

1

Don't bother calling if the text is empty
Use decimal.TryParse

answered Mar 13, 2013 at 15:36

John Arlen

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1 Comment

KFP Over a year ago

When I input the arguments for TryParse I get 'cannot implicitly convert type 'bool' to 'decimal'.

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