Summing columns

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hello.
i have datagridview with 'cCommonPrice' cell. im trying to label.text show sum of date in this cell

this my code

private void btnSell_Click(object sender, EventArgs e)
{

    if (Program.myList.Contains(txtBarCode.Text))
    {
        SelectProduct(txtBarCode.Text);
    }

    for (int i = 0; i < dgvProducts.Rows.Count; i++)
    {
        decimal mon = 0;
        decimal comPrice;
        comPrice = (decimal)dgvProducts.Rows[i].Cells["cPrice"].Value;
        mon = comPrice;
        mon = mon + comPrice;
        lblPrice.Text = mon.ToString();
    }
    txtQuantity.ResetText();
    txtBarCode.ResetText();
}

but it does not work
i need help for summing
Im using c# winforms
datagridview source is not sql table

Posted 23-Oct-10 6:58am

lester555

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shakil0304003 23-Oct-10 13:35pm

mon = comPrice; mon = mon + comPrice;lblPrice.Text = mon.ToString(); => lblPrice.Text = (comPrice * 2).ToString(); is not it?

shakil0304003 23-Oct-10 13:36pm

which label you want to show sum of date?

lester555 23-Oct-10 13:43pm

lblPrice is for showing sum

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shakil0304003 · Accepted Answer · 2010-10-23T07:40:00

I think there is some problem in your code. Write something like this

                decimal mon = 0;
                decimal comPrice;

for (int i = 0; i < dgvProducts.Rows.Count; i++)
            {
                try
                {
                comPrice = (decimal)dgvProducts.Rows[i].Cells["cPrice"].Value;
                mon += comPrice;
                }
                catch(Exception e)
                {}
            }
lblPrice.Text = mon.ToString();