error on clearing textbox

anil john

I am getting an error : Input string not in correct format , while am clearing the text box, plz help me to rectify this error

double taxAmnt =0;

private void textBox2_TextChanged(object sender, EventArgs e)

{

if (chkTax.Checked)

{

taxAmnt = ((fAuctionProfit * Convert.ToDouble(txtTax.Text)) / 100);

}

else

{

taxAmnt = Convert.ToDouble(txtTax.Text);

}

txtNetProfit.Text = (fAuctionProfit - taxAmnt - bonusAmnt-serviceChrg ).ToString ();

}

3 Replies

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Kunal Vaishya14y ago
Accepted answer
Dear do like this ,

            if (textBox2.TextLength > 0)
            {
                if (chkTax.Checked)
                {
                    taxAmnt = ((fAuctionProfit * Convert.ToDouble(txtTax.Text)) / 100);
                }
                else
                {
                    taxAmnt = Convert.ToDouble(txtTax.Text);
                }
                txtNetProfit.Text = (fAuctionProfit - taxAmnt - bonusAmnt - serviceChrg).ToString();
            }
anil john14y ago
thanx
Sivaraman Dhamodaran14y ago
From the Error statement, I can say the txtTax.Text is not in the correct format. It may have some text (Not a Number). Check around the txtTax value, when you change the content of textbox2